/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/reducercommutativity/avg60-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:40:38,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:40:38,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:40:38,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:40:38,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:40:38,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:40:38,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:40:38,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:40:38,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:40:38,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:40:38,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:40:38,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:40:38,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:40:38,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:40:38,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:40:38,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:40:38,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:40:38,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:40:38,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:40:38,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:40:38,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:40:38,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:40:38,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:40:38,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:40:38,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:40:38,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:40:38,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:40:38,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:40:38,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:40:38,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:40:38,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:40:38,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:40:38,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:40:38,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:40:38,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:40:38,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:40:38,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:40:38,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:40:38,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:40:38,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:40:38,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:40:38,173 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 22:40:38,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:40:38,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:40:38,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:40:38,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:40:38,231 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:40:38,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:40:38,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:40:38,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:40:38,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:40:38,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:40:38,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:40:38,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:40:38,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:40:38,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:40:38,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:40:38,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:40:38,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:40:38,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:40:38,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:40:38,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:40:38,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:40:38,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:40:38,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:40:38,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:40:38,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:40:38,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:40:38,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:40:38,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:40:38,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:40:38,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:40:38,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:40:38,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:40:38,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:40:38,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:40:38,643 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:40:38,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg60-1.i [2020-10-27 22:40:38,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9a7de7d/6194841b73b04fff9978e68d80860b8a/FLAG1f2500ed4 [2020-10-27 22:40:39,288 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:40:39,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg60-1.i [2020-10-27 22:40:39,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9a7de7d/6194841b73b04fff9978e68d80860b8a/FLAG1f2500ed4 [2020-10-27 22:40:39,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9a7de7d/6194841b73b04fff9978e68d80860b8a [2020-10-27 22:40:39,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:40:39,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:40:39,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:40:39,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:40:39,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:40:39,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:39,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266e3c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39, skipping insertion in model container [2020-10-27 22:40:39,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:39,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:40:39,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:40:39,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:40:39,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:40:39,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:40:39,969 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:40:39,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39 WrapperNode [2020-10-27 22:40:39,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:40:39,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:40:39,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:40:39,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:40:40,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:40,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:40,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:40,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:40,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:40,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:40,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (1/1) ... [2020-10-27 22:40:40,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:40:40,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:40:40,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:40:40,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:40:40,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:40:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:40:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:40:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:40:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-27 22:40:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:40:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:40:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:40:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 22:40:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 22:40:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-27 22:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:40:40,577 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:40:40,577 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 22:40:40,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:40:40 BoogieIcfgContainer [2020-10-27 22:40:40,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:40:40,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:40:40,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:40:40,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:40:40,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:40:39" (1/3) ... [2020-10-27 22:40:40,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a27c85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:40:40, skipping insertion in model container [2020-10-27 22:40:40,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:39" (2/3) ... [2020-10-27 22:40:40,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a27c85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:40:40, skipping insertion in model container [2020-10-27 22:40:40,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:40:40" (3/3) ... [2020-10-27 22:40:40,590 INFO L111 eAbstractionObserver]: Analyzing ICFG avg60-1.i [2020-10-27 22:40:40,604 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:40:40,610 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:40:40,625 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:40:40,655 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:40:40,656 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:40:40,656 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:40:40,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:40:40,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:40:40,656 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:40:40,656 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:40:40,657 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:40:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 22:40:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:40:40,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:40,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:40,686 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:40,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:40,693 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-27 22:40:40,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:40,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105583092] [2020-10-27 22:40:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:42,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:40:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:40:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-27 22:40:42,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:40:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:42,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:40:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:42,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:42,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:40:42,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:42,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:42,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:40:42,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:40:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:40:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:42,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:42,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:42,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:42,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:40:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:40:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:40:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:42,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:42,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:40:42,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:42,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:40:42,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:42,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:40:42,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105583092] [2020-10-27 22:40:42,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:42,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 22:40:42,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513465625] [2020-10-27 22:40:42,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 22:40:42,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:42,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 22:40:42,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:40:42,734 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 22:40:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:42,870 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 22:40:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 22:40:42,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 22:40:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:42,881 INFO L225 Difference]: With dead ends: 60 [2020-10-27 22:40:42,881 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 22:40:42,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:40:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 22:40:42,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 22:40:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 22:40:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 22:40:42,931 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 22:40:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:42,931 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 22:40:42,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 22:40:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 22:40:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:40:42,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:42,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:42,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:40:42,935 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:42,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-27 22:40:42,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:42,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137890346] [2020-10-27 22:40:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:45,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:40:45,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:40:45,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2399 [2020-10-27 22:40:45,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:40:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:40:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:40:45,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:45,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:45,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:40:45,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:45,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:45,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:45,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:40:45,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:40:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:40:45,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:40:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:45,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:45,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:40:45,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:40:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:40:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:45,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:40:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:45,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:45,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:40:45,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:40:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:40:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:40:45,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137890346] [2020-10-27 22:40:45,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:45,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:40:45,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676059760] [2020-10-27 22:40:45,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:40:45,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:45,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:40:45,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:40:45,529 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-27 22:40:45,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:45,749 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 22:40:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:40:45,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 22:40:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:45,752 INFO L225 Difference]: With dead ends: 49 [2020-10-27 22:40:45,752 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 22:40:45,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:40:45,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 22:40:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 22:40:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 22:40:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 22:40:45,764 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-27 22:40:45,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:45,765 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 22:40:45,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:40:45,765 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 22:40:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 22:40:45,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:45,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:45,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:40:45,767 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:45,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1111227151, now seen corresponding path program 1 times [2020-10-27 22:40:45,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:45,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706501701] [2020-10-27 22:40:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:50,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 22:40:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4804 [2020-10-27 22:40:50,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 22:40:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:40:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 22:40:50,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:50,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:50,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:50,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:40:50,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:50,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:50,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:50,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:40:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:40:50,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:40:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:50,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 22:40:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:50,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:50,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:40:50,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 22:40:50,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:50,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:40:50,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:50,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 22:40:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:50,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:50,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:40:50,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:40:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:40:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 22:40:50,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706501701] [2020-10-27 22:40:50,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:50,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 22:40:50,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425546023] [2020-10-27 22:40:50,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:40:50,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:50,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:40:50,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:40:50,827 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-27 22:40:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:51,136 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-27 22:40:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 22:40:51,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 22:40:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:51,141 INFO L225 Difference]: With dead ends: 52 [2020-10-27 22:40:51,141 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 22:40:51,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:40:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 22:40:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 22:40:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 22:40:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 22:40:51,163 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-27 22:40:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:51,164 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 22:40:51,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:40:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 22:40:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 22:40:51,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:51,167 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:51,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:40:51,168 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:51,169 INFO L82 PathProgramCache]: Analyzing trace with hash 51803405, now seen corresponding path program 2 times [2020-10-27 22:40:51,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:51,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324006866] [2020-10-27 22:40:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:56,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 22:40:56,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 22:40:56,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 22:40:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:56,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:56,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:56,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:40:56,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:56,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:56,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:56,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:56,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:40:56,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:56,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 22:40:56,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 22:40:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:40:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 22:40:56,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:56,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:40:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:56,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:40:56,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:56,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 22:40:56,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:56,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 22:40:56,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324006866] [2020-10-27 22:40:56,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:56,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 22:40:56,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260921010] [2020-10-27 22:40:56,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:40:56,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:40:56,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:40:56,459 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-27 22:40:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:56,721 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 22:40:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:40:56,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 22:40:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:56,723 INFO L225 Difference]: With dead ends: 56 [2020-10-27 22:40:56,723 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 22:40:56,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:40:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 22:40:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 22:40:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 22:40:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 22:40:56,732 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-27 22:40:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:56,732 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 22:40:56,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:40:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 22:40:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 22:40:56,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:56,735 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:56,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:40:56,735 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:56,736 INFO L82 PathProgramCache]: Analyzing trace with hash 790018187, now seen corresponding path program 3 times [2020-10-27 22:40:56,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:56,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370996509] [2020-10-27 22:40:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:58,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:01,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:01,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:41:01,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:41:01,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 22:41:01,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:41:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:41:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:41:01,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:01,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:01,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:01,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:01,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:01,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:41:01,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:01,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:41:01,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 22:41:01,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:41:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:01,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:41:01,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:01,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:41:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:01,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:01,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:01,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:41:01,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 22:41:01,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:41:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:41:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:41:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:02,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:02,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:41:02,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:41:02,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:41:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:41:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 22:41:02,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370996509] [2020-10-27 22:41:02,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:02,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:41:02,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950577223] [2020-10-27 22:41:02,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:41:02,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:02,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:41:02,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:41:02,020 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-27 22:41:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:02,366 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 22:41:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:41:02,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 22:41:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:02,369 INFO L225 Difference]: With dead ends: 60 [2020-10-27 22:41:02,369 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 22:41:02,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:41:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 22:41:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 22:41:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 22:41:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 22:41:02,384 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-27 22:41:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:02,384 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 22:41:02,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:41:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 22:41:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:41:02,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:02,387 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:02,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:41:02,388 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:02,389 INFO L82 PathProgramCache]: Analyzing trace with hash -804838007, now seen corresponding path program 4 times [2020-10-27 22:41:02,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:02,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651459402] [2020-10-27 22:41:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:02,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:07,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 22:41:07,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:41:07,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:41:07,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:41:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 22:41:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:41:07,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:07,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:07,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:07,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:41:07,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:07,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:07,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:41:07,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 22:41:07,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:07,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:41:07,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:07,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:41:07,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 22:41:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:07,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:41:07,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 22:41:07,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:41:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:41:07,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:07,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 22:41:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:07,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:07,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:41:07,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:07,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 22:41:07,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:41:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:41:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 22:41:07,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651459402] [2020-10-27 22:41:07,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:07,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:41:07,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715155949] [2020-10-27 22:41:07,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:41:07,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:07,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:41:07,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:41:07,727 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-27 22:41:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:08,099 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-27 22:41:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:41:08,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 22:41:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:08,102 INFO L225 Difference]: With dead ends: 64 [2020-10-27 22:41:08,102 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 22:41:08,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:41:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 22:41:08,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 22:41:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 22:41:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 22:41:08,109 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-27 22:41:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:08,109 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 22:41:08,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:41:08,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 22:41:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 22:41:08,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:08,111 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:08,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:41:08,111 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:08,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:08,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1925848071, now seen corresponding path program 5 times [2020-10-27 22:41:08,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:08,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582242661] [2020-10-27 22:41:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:08,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:08,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:41:13,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:41:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 22:41:13,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:41:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 22:41:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:41:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:13,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:13,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:41:13,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 22:41:13,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:41:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:41:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:41:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:41:13,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 22:41:13,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:41:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:41:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 22:41:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:41:13,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:13,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 22:41:13,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:41:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:41:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 22:41:13,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582242661] [2020-10-27 22:41:13,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:13,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:41:13,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056899306] [2020-10-27 22:41:13,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:41:13,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:13,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:41:13,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:41:13,455 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-27 22:41:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:13,756 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-27 22:41:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:41:13,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-27 22:41:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:13,757 INFO L225 Difference]: With dead ends: 68 [2020-10-27 22:41:13,758 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 22:41:13,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:41:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 22:41:13,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 22:41:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 22:41:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 22:41:13,765 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-27 22:41:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:13,765 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 22:41:13,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:41:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 22:41:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:41:13,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:13,766 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:13,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:41:13,767 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1118176251, now seen corresponding path program 6 times [2020-10-27 22:41:13,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:13,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849026306] [2020-10-27 22:41:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:18,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:18,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 22:41:18,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:41:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 22:41:18,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:41:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:41:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:41:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:18,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:18,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:18,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:18,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:18,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:18,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:18,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:18,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:18,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:41:18,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 22:41:18,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:41:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:41:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:19,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 22:41:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:19,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:19,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:19,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:41:19,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:41:19,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:41:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:41:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:41:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:19,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:19,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:41:19,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:19,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 22:41:19,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:41:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:19,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:41:19,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 22:41:19,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849026306] [2020-10-27 22:41:19,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:19,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:41:19,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569751399] [2020-10-27 22:41:19,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:41:19,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:19,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:41:19,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:41:19,153 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-27 22:41:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:19,493 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 22:41:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:41:19,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 22:41:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:19,495 INFO L225 Difference]: With dead ends: 72 [2020-10-27 22:41:19,495 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 22:41:19,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:41:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 22:41:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 22:41:19,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 22:41:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-27 22:41:19,516 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-27 22:41:19,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:19,517 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-27 22:41:19,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:41:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-27 22:41:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 22:41:19,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:19,524 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:19,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:41:19,525 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:19,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2067192445, now seen corresponding path program 7 times [2020-10-27 22:41:19,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:19,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928911328] [2020-10-27 22:41:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:19,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:19,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 22:41:24,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:41:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:41:24,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:41:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 22:41:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:41:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:24,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:24,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 22:41:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 22:41:24,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:41:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:41:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:41:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 22:41:24,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 22:41:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:41:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:41:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:41:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 22:41:24,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 22:41:24,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:41:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:41:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 22:41:24,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928911328] [2020-10-27 22:41:24,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:24,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:41:24,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746478804] [2020-10-27 22:41:24,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:41:24,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:24,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:41:24,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:41:24,956 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-27 22:41:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:25,385 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 22:41:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:41:25,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 22:41:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:25,386 INFO L225 Difference]: With dead ends: 76 [2020-10-27 22:41:25,386 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 22:41:25,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:41:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 22:41:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 22:41:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 22:41:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-27 22:41:25,395 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-27 22:41:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:25,396 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-27 22:41:25,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:41:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-27 22:41:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 22:41:25,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:25,397 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:25,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:41:25,398 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:25,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1665267841, now seen corresponding path program 8 times [2020-10-27 22:41:25,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:25,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290289442] [2020-10-27 22:41:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:30,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:30,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 22:41:30,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:41:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:41:30,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:41:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 22:41:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:41:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:30,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:30,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:30,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:30,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:30,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:41:30,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:30,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:30,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:30,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:30,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:30,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:41:30,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 22:41:30,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:41:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:41:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:30,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 22:41:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:30,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:30,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:30,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:41:30,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 22:41:30,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:41:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:41:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 22:41:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:30,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:30,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:30,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:41:30,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 22:41:30,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:41:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:41:30,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 22:41:30,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290289442] [2020-10-27 22:41:30,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:30,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:41:30,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853921839] [2020-10-27 22:41:30,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:41:30,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:30,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:41:30,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:41:30,824 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-27 22:41:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:31,316 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-27 22:41:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:41:31,317 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-27 22:41:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:31,318 INFO L225 Difference]: With dead ends: 80 [2020-10-27 22:41:31,318 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 22:41:31,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:41:31,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 22:41:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 22:41:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 22:41:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-27 22:41:31,327 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-27 22:41:31,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:31,327 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-27 22:41:31,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:41:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-27 22:41:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:41:31,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:31,329 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:31,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:41:31,329 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash -838413057, now seen corresponding path program 9 times [2020-10-27 22:41:31,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:31,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016824692] [2020-10-27 22:41:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:31,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:36,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 22:41:36,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:41:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:41:36,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:41:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 22:41:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:41:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:36,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:36,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:36,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:36,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:36,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:36,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:36,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:41:36,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 22:41:36,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:41:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:41:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:41:36,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:41:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:36,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:41:36,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 22:41:36,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:41:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:41:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:41:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:36,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:36,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:41:36,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:36,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 22:41:36,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:36,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:36,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:41:36,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:36,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 81 proven. 611 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-27 22:41:36,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016824692] [2020-10-27 22:41:36,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:36,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 22:41:36,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544642432] [2020-10-27 22:41:36,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:41:36,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:36,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:41:36,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:41:36,835 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-27 22:41:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:37,353 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-10-27 22:41:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:41:37,353 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2020-10-27 22:41:37,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:37,354 INFO L225 Difference]: With dead ends: 86 [2020-10-27 22:41:37,354 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 22:41:37,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-10-27 22:41:37,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 22:41:37,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-27 22:41:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 22:41:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-27 22:41:37,372 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 88 [2020-10-27 22:41:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:37,375 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-27 22:41:37,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:41:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-27 22:41:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 22:41:37,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:37,376 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:37,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:41:37,377 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:37,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:37,377 INFO L82 PathProgramCache]: Analyzing trace with hash -269372037, now seen corresponding path program 1 times [2020-10-27 22:41:37,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:37,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380580462] [2020-10-27 22:41:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:37,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:37,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:37,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 22:41:42,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:41:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 22:41:42,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:41:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:41:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:41:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:42,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:42,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 22:41:42,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:41:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:41:42,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:42,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 22:41:42,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:41:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:41:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 22:41:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:42,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:42,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 22:41:42,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:41:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 100 proven. 749 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-27 22:41:42,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380580462] [2020-10-27 22:41:42,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:42,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:41:42,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000243537] [2020-10-27 22:41:42,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:41:42,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:41:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:41:42,909 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 16 states. [2020-10-27 22:41:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:43,550 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2020-10-27 22:41:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:41:43,551 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-10-27 22:41:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:43,552 INFO L225 Difference]: With dead ends: 93 [2020-10-27 22:41:43,552 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 22:41:43,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=463, Unknown=0, NotChecked=0, Total=702 [2020-10-27 22:41:43,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 22:41:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-27 22:41:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 22:41:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 22:41:43,560 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 96 [2020-10-27 22:41:43,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:43,560 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 22:41:43,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:41:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 22:41:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 22:41:43,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:43,562 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 2, 2, 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 22:41:43,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:41:43,562 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1367824137, now seen corresponding path program 2 times [2020-10-27 22:41:43,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:43,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088560762] [2020-10-27 22:41:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:43,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:41:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:48,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:48,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:48,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:48,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:48,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:48,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:48,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 22:41:48,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 22:41:48,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:41:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:41:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:49,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 22:41:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:49,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:49,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 22:41:49,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 22:41:49,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:41:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:41:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 22:41:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:49,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 22:41:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 22:41:49,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 22:41:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 121 proven. 903 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 22:41:49,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088560762] [2020-10-27 22:41:49,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:49,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 22:41:49,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079008806] [2020-10-27 22:41:49,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 22:41:49,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:49,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 22:41:49,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:41:49,551 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-27 22:41:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:50,192 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-27 22:41:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:41:50,193 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-10-27 22:41:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:50,194 INFO L225 Difference]: With dead ends: 101 [2020-10-27 22:41:50,194 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 22:41:50,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=282, Invalid=588, Unknown=0, NotChecked=0, Total=870 [2020-10-27 22:41:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 22:41:50,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 22:41:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 22:41:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-27 22:41:50,218 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 104 [2020-10-27 22:41:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:50,218 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-27 22:41:50,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 22:41:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-27 22:41:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 22:41:50,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:50,220 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:50,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:41:50,220 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash 71855987, now seen corresponding path program 3 times [2020-10-27 22:41:50,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:50,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331821056] [2020-10-27 22:41:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:55,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:55,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 22:41:55,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:41:55,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 22:41:55,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:41:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 22:41:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:41:55,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:55,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:55,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:55,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:55,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:55,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:55,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:55,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:55,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:55,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:41:55,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 22:41:55,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:41:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:41:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:55,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:41:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:55,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:55,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:41:55,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:55,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 22:41:55,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:55,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:41:55,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:55,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:41:55,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:55,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:41:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:55,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 144 proven. 1073 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-27 22:41:56,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331821056] [2020-10-27 22:41:56,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:56,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:41:56,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582348227] [2020-10-27 22:41:56,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:41:56,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:56,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:41:56,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:41:56,055 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-27 22:41:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:56,812 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-27 22:41:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 22:41:56,813 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 112 [2020-10-27 22:41:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:56,814 INFO L225 Difference]: With dead ends: 109 [2020-10-27 22:41:56,814 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 22:41:56,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 22:41:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 22:41:56,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-27 22:41:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 22:41:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-27 22:41:56,824 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 112 [2020-10-27 22:41:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:56,825 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-27 22:41:56,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:41:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-27 22:41:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 22:41:56,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:56,826 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:56,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:41:56,827 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:56,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:56,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1056819439, now seen corresponding path program 4 times [2020-10-27 22:41:56,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:56,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066809028] [2020-10-27 22:41:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:56,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 22:42:01,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:42:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:42:01,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:42:01,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 22:42:01,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:42:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:01,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:01,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:01,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:01,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:02,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:02,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 22:42:02,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 22:42:02,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:42:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:42:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:42:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:02,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 22:42:02,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 22:42:02,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:02,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:42:02,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:42:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 22:42:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:02,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:02,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 22:42:02,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 22:42:02,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 22:42:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:02,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1630 backedges. 169 proven. 1259 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-27 22:42:02,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066809028] [2020-10-27 22:42:02,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:02,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:42:02,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346985551] [2020-10-27 22:42:02,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:42:02,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:02,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:42:02,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:42:02,590 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-27 22:42:03,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:03,339 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-27 22:42:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 22:42:03,339 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 120 [2020-10-27 22:42:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:03,340 INFO L225 Difference]: With dead ends: 117 [2020-10-27 22:42:03,340 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 22:42:03,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=380, Invalid=880, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 22:42:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 22:42:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 22:42:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 22:42:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-27 22:42:03,350 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 120 [2020-10-27 22:42:03,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:03,350 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-27 22:42:03,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:42:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-27 22:42:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 22:42:03,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:03,352 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:03,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:42:03,352 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:03,355 INFO L82 PathProgramCache]: Analyzing trace with hash -886737557, now seen corresponding path program 5 times [2020-10-27 22:42:03,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:03,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269515684] [2020-10-27 22:42:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:08,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 22:42:08,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:42:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 22:42:08,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:42:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 22:42:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:42:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:08,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:08,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:08,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 22:42:08,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:08,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 22:42:08,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:42:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:42:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:42:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:08,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:09,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:09,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 22:42:09,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 22:42:09,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:42:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:42:09,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:09,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:42:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 196 proven. 1461 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 22:42:09,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269515684] [2020-10-27 22:42:09,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:09,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 22:42:09,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775829110] [2020-10-27 22:42:09,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 22:42:09,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:09,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 22:42:09,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 22:42:09,245 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-27 22:42:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:10,145 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-27 22:42:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 22:42:10,147 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 128 [2020-10-27 22:42:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:10,148 INFO L225 Difference]: With dead ends: 125 [2020-10-27 22:42:10,148 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 22:42:10,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=435, Invalid=1047, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 22:42:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 22:42:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-27 22:42:10,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 22:42:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-27 22:42:10,161 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 128 [2020-10-27 22:42:10,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:10,161 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-27 22:42:10,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 22:42:10,161 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-27 22:42:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 22:42:10,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:10,163 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:10,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:42:10,163 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:10,164 INFO L82 PathProgramCache]: Analyzing trace with hash 3945703, now seen corresponding path program 6 times [2020-10-27 22:42:10,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:10,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451110486] [2020-10-27 22:42:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 22:42:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:42:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:42:15,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:42:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 22:42:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:42:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:15,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:42:15,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 22:42:15,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:42:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:42:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 22:42:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:15,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:42:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 22:42:15,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:42:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:42:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 22:42:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:15,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:16,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:16,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:42:16,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 22:42:16,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:42:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2166 backedges. 225 proven. 1679 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 22:42:16,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451110486] [2020-10-27 22:42:16,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:16,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 22:42:16,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405250755] [2020-10-27 22:42:16,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 22:42:16,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:16,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 22:42:16,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:42:16,141 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-27 22:42:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:17,153 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-27 22:42:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 22:42:17,155 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 136 [2020-10-27 22:42:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:17,156 INFO L225 Difference]: With dead ends: 133 [2020-10-27 22:42:17,156 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 22:42:17,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=494, Invalid=1228, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 22:42:17,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 22:42:17,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 22:42:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 22:42:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-27 22:42:17,165 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 136 [2020-10-27 22:42:17,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:17,165 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-27 22:42:17,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 22:42:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-27 22:42:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 22:42:17,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:17,167 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:17,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:42:17,167 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:17,168 INFO L82 PathProgramCache]: Analyzing trace with hash -324090013, now seen corresponding path program 7 times [2020-10-27 22:42:17,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:17,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598627306] [2020-10-27 22:42:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:22,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:22,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 22:42:22,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:42:22,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:42:22,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:42:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 22:42:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:42:22,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:22,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:22,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:22,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:22,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:22,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:22,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:22,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:22,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:42:22,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 22:42:22,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:42:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:42:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 22:42:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:42:23,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 22:42:23,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:42:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:42:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 22:42:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:23,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:23,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:23,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:42:23,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 22:42:23,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 22:42:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2464 backedges. 256 proven. 1913 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-27 22:42:23,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598627306] [2020-10-27 22:42:23,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:23,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 22:42:23,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128464450] [2020-10-27 22:42:23,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 22:42:23,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 22:42:23,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:42:23,269 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-27 22:42:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:24,393 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-27 22:42:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 22:42:24,393 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 144 [2020-10-27 22:42:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:24,394 INFO L225 Difference]: With dead ends: 141 [2020-10-27 22:42:24,395 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 22:42:24,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=557, Invalid=1423, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 22:42:24,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 22:42:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 22:42:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 22:42:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-27 22:42:24,404 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 144 [2020-10-27 22:42:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:24,404 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-27 22:42:24,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 22:42:24,404 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-27 22:42:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 22:42:24,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:24,406 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:24,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:42:24,406 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:24,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:24,407 INFO L82 PathProgramCache]: Analyzing trace with hash 567930079, now seen corresponding path program 8 times [2020-10-27 22:42:24,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:24,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680675441] [2020-10-27 22:42:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 22:42:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:42:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 22:42:29,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:42:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 22:42:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:42:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:29,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:29,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:29,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:29,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:29,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:29,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:29,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:29,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 22:42:29,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:29,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 22:42:29,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:42:29,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:29,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:42:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:42:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:30,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:30,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 22:42:30,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-27 22:42:30,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:42:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:42:30,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:30,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 22:42:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:30,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:30,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 22:42:30,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:30,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-27 22:42:30,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 22:42:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:30,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2782 backedges. 289 proven. 2163 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-27 22:42:30,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680675441] [2020-10-27 22:42:30,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:30,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 22:42:30,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672655301] [2020-10-27 22:42:30,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 22:42:30,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:30,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 22:42:30,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2020-10-27 22:42:30,670 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-27 22:42:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:31,807 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-27 22:42:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 22:42:31,808 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 152 [2020-10-27 22:42:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:31,808 INFO L225 Difference]: With dead ends: 149 [2020-10-27 22:42:31,809 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 22:42:31,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=624, Invalid=1632, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 22:42:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 22:42:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-27 22:42:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 22:42:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-27 22:42:31,821 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 152 [2020-10-27 22:42:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:31,823 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-27 22:42:31,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 22:42:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-27 22:42:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 22:42:31,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:31,827 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:31,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:42:31,827 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:31,828 INFO L82 PathProgramCache]: Analyzing trace with hash -2146802341, now seen corresponding path program 9 times [2020-10-27 22:42:31,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:31,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880391232] [2020-10-27 22:42:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:31,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:36,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 22:42:36,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:42:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 22:42:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:42:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 22:42:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:42:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:36,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:36,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:36,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:36,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:42:36,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:36,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:36,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:36,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:37,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:42:37,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:37,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 22:42:37,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:42:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:42:37,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 22:42:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:37,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:42:37,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-27 22:42:37,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:42:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:42:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 22:42:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:37,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:38,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:38,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:42:38,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-27 22:42:38,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 22:42:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:38,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 324 proven. 2429 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-27 22:42:38,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880391232] [2020-10-27 22:42:38,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:38,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 22:42:38,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506953546] [2020-10-27 22:42:38,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 22:42:38,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:38,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 22:42:38,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:42:38,230 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-27 22:42:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:39,578 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-27 22:42:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 22:42:39,579 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 160 [2020-10-27 22:42:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:39,580 INFO L225 Difference]: With dead ends: 157 [2020-10-27 22:42:39,580 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 22:42:39,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=695, Invalid=1855, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 22:42:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 22:42:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 22:42:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 22:42:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-27 22:42:39,590 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 160 [2020-10-27 22:42:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:39,590 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-27 22:42:39,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 22:42:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-27 22:42:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 22:42:39,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:39,593 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:39,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 22:42:39,593 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:39,593 INFO L82 PathProgramCache]: Analyzing trace with hash 41742551, now seen corresponding path program 10 times [2020-10-27 22:42:39,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:39,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215933969] [2020-10-27 22:42:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:39,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:44,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:44,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 22:42:44,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:42:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-27 22:42:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:42:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 22:42:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:42:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:44,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:44,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:44,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:44,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:42:44,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:44,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:44,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:45,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:45,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:42:45,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-27 22:42:45,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:42:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:42:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 22:42:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:46,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:42:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-27 22:42:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:42:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:42:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 22:42:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:46,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:46,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:42:46,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-27 22:42:46,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 22:42:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 361 proven. 2711 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-27 22:42:46,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215933969] [2020-10-27 22:42:46,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:46,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 22:42:46,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658674306] [2020-10-27 22:42:46,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 22:42:46,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:46,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 22:42:46,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=812, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:42:46,464 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-27 22:42:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:47,980 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-27 22:42:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 22:42:47,981 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 168 [2020-10-27 22:42:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:47,982 INFO L225 Difference]: With dead ends: 165 [2020-10-27 22:42:47,982 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 22:42:47,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=770, Invalid=2092, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 22:42:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 22:42:47,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-27 22:42:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 22:42:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-27 22:42:47,992 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 168 [2020-10-27 22:42:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:47,993 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-27 22:42:47,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 22:42:47,993 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-27 22:42:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 22:42:47,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:47,995 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:47,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 22:42:47,995 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:47,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1956753581, now seen corresponding path program 11 times [2020-10-27 22:42:47,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:47,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419682156] [2020-10-27 22:42:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:53,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:53,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 22:42:53,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:42:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:42:53,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:42:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 22:42:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:42:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:42:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:53,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:53,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:42:53,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:42:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:42:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:42:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:42:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:53,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:53,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:42:53,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-27 22:42:53,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:42:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:42:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:42:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:54,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:54,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:42:54,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 22:42:54,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:42:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:42:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:42:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 22:42:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:54,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:42:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 400 proven. 3009 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-27 22:42:54,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419682156] [2020-10-27 22:42:54,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:42:54,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 22:42:54,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776319898] [2020-10-27 22:42:54,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 22:42:54,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:42:54,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 22:42:54,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=915, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 22:42:54,744 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-27 22:42:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:42:56,367 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-27 22:42:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 22:42:56,372 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 176 [2020-10-27 22:42:56,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:42:56,372 INFO L225 Difference]: With dead ends: 173 [2020-10-27 22:42:56,373 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 22:42:56,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=849, Invalid=2343, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 22:42:56,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 22:42:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 22:42:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 22:42:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-27 22:42:56,381 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 176 [2020-10-27 22:42:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:42:56,382 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-27 22:42:56,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 22:42:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-27 22:42:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-27 22:42:56,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:42:56,383 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:42:56,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 22:42:56,383 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:42:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:42:56,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1345634097, now seen corresponding path program 12 times [2020-10-27 22:42:56,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:42:56,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200966473] [2020-10-27 22:42:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:42:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:42:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:42:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-27 22:43:01,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:43:01,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 22:43:01,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:43:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 22:43:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:43:01,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:01,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:01,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:01,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:01,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:01,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:02,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:02,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:43:02,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:02,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-27 22:43:02,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:43:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:43:02,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 22:43:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:02,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:43:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-27 22:43:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:43:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:43:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 22:43:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:03,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:03,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 22:43:03,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:03,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 22:43:03,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 22:43:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:03,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4254 backedges. 441 proven. 3323 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2020-10-27 22:43:03,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200966473] [2020-10-27 22:43:03,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:03,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 22:43:03,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12906545] [2020-10-27 22:43:03,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 22:43:03,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:03,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 22:43:03,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1024, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 22:43:03,316 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-27 22:43:05,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:05,066 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-27 22:43:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 22:43:05,066 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 184 [2020-10-27 22:43:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:05,068 INFO L225 Difference]: With dead ends: 181 [2020-10-27 22:43:05,068 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 22:43:05,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=932, Invalid=2608, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 22:43:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 22:43:05,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-27 22:43:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 22:43:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-27 22:43:05,077 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 184 [2020-10-27 22:43:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:05,077 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-27 22:43:05,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 22:43:05,078 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-27 22:43:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-27 22:43:05,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:05,079 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:05,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 22:43:05,079 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:05,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2083486389, now seen corresponding path program 13 times [2020-10-27 22:43:05,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:05,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851306628] [2020-10-27 22:43:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:05,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-27 22:43:10,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:43:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 22:43:10,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:43:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 22:43:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:43:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:10,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:10,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:10,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:43:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 22:43:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:43:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 22:43:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:12,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 22:43:12,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-27 22:43:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 22:43:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4672 backedges. 484 proven. 3653 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-27 22:43:12,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851306628] [2020-10-27 22:43:12,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:12,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 22:43:12,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648344593] [2020-10-27 22:43:12,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 22:43:12,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:12,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 22:43:12,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1139, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 22:43:12,162 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-27 22:43:14,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:14,037 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-27 22:43:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:43:14,038 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 192 [2020-10-27 22:43:14,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:14,039 INFO L225 Difference]: With dead ends: 189 [2020-10-27 22:43:14,039 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 22:43:14,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1019, Invalid=2887, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 22:43:14,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 22:43:14,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-27 22:43:14,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 22:43:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-27 22:43:14,049 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 192 [2020-10-27 22:43:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:14,049 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-27 22:43:14,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 22:43:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-27 22:43:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-27 22:43:14,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:14,051 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:14,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 22:43:14,054 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:14,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:14,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1718279367, now seen corresponding path program 14 times [2020-10-27 22:43:14,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:14,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549058605] [2020-10-27 22:43:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:19,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:19,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 22:43:19,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:43:19,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 22:43:19,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:43:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-27 22:43:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:43:19,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:19,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:19,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:19,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:19,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:43:19,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:19,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:43:19,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:20,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:43:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:20,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:20,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 22:43:20,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:20,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-27 22:43:20,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:43:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:20,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:43:20,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:20,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 22:43:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:20,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:21,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:21,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 22:43:21,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-27 22:43:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 22:43:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5110 backedges. 529 proven. 3999 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-27 22:43:21,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549058605] [2020-10-27 22:43:21,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:21,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 22:43:21,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824155234] [2020-10-27 22:43:21,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 22:43:21,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:21,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 22:43:21,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1260, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 22:43:21,266 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-27 22:43:23,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:23,162 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-27 22:43:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 22:43:23,163 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 200 [2020-10-27 22:43:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:23,164 INFO L225 Difference]: With dead ends: 197 [2020-10-27 22:43:23,164 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 22:43:23,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1110, Invalid=3180, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 22:43:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 22:43:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 22:43:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 22:43:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-27 22:43:23,173 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 200 [2020-10-27 22:43:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:23,174 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-27 22:43:23,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 22:43:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-27 22:43:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-27 22:43:23,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:23,175 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:23,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 22:43:23,175 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash -846788797, now seen corresponding path program 15 times [2020-10-27 22:43:23,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:23,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732827239] [2020-10-27 22:43:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:23,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:28,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:28,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 22:43:28,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:43:28,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-27 22:43:28,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:43:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 22:43:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 22:43:28,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:28,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:43:28,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:28,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:28,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:28,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:28,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:28,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:43:28,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-27 22:43:28,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:43:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:43:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 22:43:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:43:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:30,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 22:43:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:30,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:30,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:43:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-27 22:43:30,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 22:43:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 576 proven. 4361 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-27 22:43:30,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732827239] [2020-10-27 22:43:30,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:30,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 22:43:30,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469583157] [2020-10-27 22:43:30,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 22:43:30,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:30,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 22:43:30,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 22:43:30,550 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-27 22:43:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:32,464 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-27 22:43:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 22:43:32,465 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 208 [2020-10-27 22:43:32,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:32,466 INFO L225 Difference]: With dead ends: 205 [2020-10-27 22:43:32,466 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 22:43:32,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1205, Invalid=3487, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 22:43:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 22:43:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 22:43:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 22:43:32,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-27 22:43:32,478 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 208 [2020-10-27 22:43:32,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:32,479 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-27 22:43:32,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 22:43:32,479 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-27 22:43:32,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 22:43:32,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:32,480 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:32,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 22:43:32,481 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:32,481 INFO L82 PathProgramCache]: Analyzing trace with hash 302105791, now seen corresponding path program 16 times [2020-10-27 22:43:32,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:32,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794763764] [2020-10-27 22:43:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:32,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:37,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:37,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 22:43:37,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:43:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 22:43:37,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:43:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 22:43:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:43:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:37,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:37,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:37,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:43:37,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:38,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:38,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 22:43:38,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:38,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-27 22:43:38,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:43:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 22:43:38,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 22:43:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:39,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:39,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 22:43:39,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:39,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-27 22:43:39,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:43:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 22:43:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 22:43:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:39,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 22:43:39,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 22:43:39,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 22:43:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6046 backedges. 625 proven. 4739 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-27 22:43:39,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794763764] [2020-10-27 22:43:39,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:39,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 22:43:39,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410197339] [2020-10-27 22:43:39,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 22:43:39,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 22:43:39,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=1520, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 22:43:39,751 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-27 22:43:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:41,985 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-27 22:43:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 22:43:41,986 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 216 [2020-10-27 22:43:41,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:41,986 INFO L225 Difference]: With dead ends: 213 [2020-10-27 22:43:41,986 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 22:43:41,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1304, Invalid=3808, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 22:43:41,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 22:43:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 22:43:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 22:43:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-27 22:43:41,996 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 216 [2020-10-27 22:43:41,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:41,996 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-27 22:43:41,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 22:43:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-27 22:43:41,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 22:43:41,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:41,998 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:41,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 22:43:41,998 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:41,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1000854843, now seen corresponding path program 17 times [2020-10-27 22:43:41,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:41,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779397860] [2020-10-27 22:43:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:42,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:43:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:47,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:47,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:47,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:43:47,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:47,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:48,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:48,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:43:48,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-27 22:43:48,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 22:43:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:43:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:49,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:43:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:49,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:43:49,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-27 22:43:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 22:43:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:43:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 22:43:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:43:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-27 22:43:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 22:43:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6544 backedges. 676 proven. 5133 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-27 22:43:49,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779397860] [2020-10-27 22:43:49,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:43:49,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 22:43:49,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383680256] [2020-10-27 22:43:49,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 22:43:49,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:43:49,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 22:43:49,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=1659, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 22:43:49,950 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-27 22:43:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:43:52,321 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-27 22:43:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:43:52,322 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 224 [2020-10-27 22:43:52,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:43:52,323 INFO L225 Difference]: With dead ends: 221 [2020-10-27 22:43:52,324 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 22:43:52,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1407, Invalid=4143, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 22:43:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 22:43:52,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 22:43:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 22:43:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-27 22:43:52,332 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 224 [2020-10-27 22:43:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:43:52,333 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-27 22:43:52,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 22:43:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-27 22:43:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 22:43:52,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:43:52,334 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:43:52,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 22:43:52,335 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:43:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:43:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash -852100937, now seen corresponding path program 18 times [2020-10-27 22:43:52,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:43:52,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667495260] [2020-10-27 22:43:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:43:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:57,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:57,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 22:43:57,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:43:57,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-27 22:43:57,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:43:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 22:43:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:43:57,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:57,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:43:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:43:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:57,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:43:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:57,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 22:43:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:59,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:43:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:43:59,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:43:59,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:43:59,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-27 22:43:59,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:43:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 22:43:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:43:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 22:43:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:43:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 22:43:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:43:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:43:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:00,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 22:44:00,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-27 22:44:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 22:44:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7062 backedges. 729 proven. 5543 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2020-10-27 22:44:00,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667495260] [2020-10-27 22:44:00,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:00,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 22:44:00,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888859597] [2020-10-27 22:44:00,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 22:44:00,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:00,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 22:44:00,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=646, Invalid=1804, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 22:44:00,232 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-27 22:44:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:02,713 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-27 22:44:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 22:44:02,714 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 232 [2020-10-27 22:44:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:02,715 INFO L225 Difference]: With dead ends: 229 [2020-10-27 22:44:02,715 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 22:44:02,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1514, Invalid=4492, Unknown=0, NotChecked=0, Total=6006 [2020-10-27 22:44:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 22:44:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 22:44:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 22:44:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-27 22:44:02,724 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 232 [2020-10-27 22:44:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:02,725 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-27 22:44:02,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 22:44:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-27 22:44:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-27 22:44:02,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:02,726 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:02,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 22:44:02,727 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:02,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1873219789, now seen corresponding path program 19 times [2020-10-27 22:44:02,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:02,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67264158] [2020-10-27 22:44:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:02,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:02,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5296 [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:44:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:08,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:08,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:44:08,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:08,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:08,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:08,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:44:08,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-27 22:44:08,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 22:44:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 22:44:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:10,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:44:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:10,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:44:10,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-27 22:44:10,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 22:44:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 22:44:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 22:44:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:10,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:10,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:44:10,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:10,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-27 22:44:10,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:10,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 22:44:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7600 backedges. 784 proven. 5969 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-27 22:44:10,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67264158] [2020-10-27 22:44:10,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:10,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 22:44:10,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383533082] [2020-10-27 22:44:10,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 22:44:10,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:10,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 22:44:10,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=1955, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 22:44:10,953 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-27 22:44:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:44:13,625 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-27 22:44:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 22:44:13,626 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 240 [2020-10-27 22:44:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:44:13,627 INFO L225 Difference]: With dead ends: 237 [2020-10-27 22:44:13,628 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 22:44:13,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1625, Invalid=4855, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 22:44:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 22:44:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 22:44:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 22:44:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-27 22:44:13,637 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 240 [2020-10-27 22:44:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:44:13,637 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-27 22:44:13,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 22:44:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-27 22:44:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-27 22:44:13,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:44:13,639 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:44:13,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 22:44:13,639 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:44:13,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:44:13,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1638758575, now seen corresponding path program 20 times [2020-10-27 22:44:13,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:44:13,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587146801] [2020-10-27 22:44:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:44:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:13,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:18,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:18,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-27 22:44:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:44:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 22:44:18,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:44:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 22:44:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:44:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:19,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:44:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:19,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:44:19,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:44:19,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:44:19,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:44:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:44:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:19,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:19,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:19,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 22:44:19,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:19,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-27 22:44:19,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:19,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 22:44:19,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:19,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:44:19,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:20,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 22:44:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:21,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:21,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 22:44:21,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:21,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-27 22:44:21,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 22:44:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:44:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:44:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 22:44:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:44:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:44:21,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:44:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 22:44:21,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:44:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-27 22:44:21,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:44:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:44:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 22:44:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:44:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:44:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8158 backedges. 841 proven. 6411 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2020-10-27 22:44:21,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587146801] [2020-10-27 22:44:21,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:44:21,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-27 22:44:21,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631558488] [2020-10-27 22:44:21,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-27 22:44:21,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:44:21,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-27 22:44:21,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 22:44:21,904 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 54 states.