/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:26:39,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:26:39,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:26:39,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:26:39,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:26:39,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:26:39,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:26:39,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:26:39,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:26:39,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:26:39,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:26:39,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:26:39,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:26:39,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:26:39,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:26:39,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:26:39,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:26:39,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:26:39,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:26:39,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:26:39,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:26:39,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:26:39,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:26:39,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:26:39,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:26:39,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:26:39,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:26:39,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:26:39,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:26:39,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:26:39,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:26:39,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:26:39,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:26:39,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:26:39,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:26:39,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:26:39,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:26:39,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:26:39,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:26:39,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:26:39,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:26:39,255 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 [2020-10-26 23:26:39,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:26:39,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:26:39,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:26:39,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:26:39,307 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:26:39,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:26:39,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:26:39,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:26:39,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:26:39,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:26:39,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:26:39,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:26:39,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:26:39,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:26:39,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:26:39,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:26:39,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:26:39,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:26:39,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:26:39,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:26:39,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:26:39,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:26:39,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:26:39,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:26:39,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:26:39,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:26:39,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:26:39,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:26:39,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:26:39,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:26:39,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:26:39,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:26:39,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:26:39,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:26:39,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:26:39,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-10-26 23:26:39,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fda2a1736/0f9f9076df594ca8b46889cbdd8fa482/FLAGe413abe8f [2020-10-26 23:26:40,599 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:26:40,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-10-26 23:26:40,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fda2a1736/0f9f9076df594ca8b46889cbdd8fa482/FLAGe413abe8f [2020-10-26 23:26:40,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fda2a1736/0f9f9076df594ca8b46889cbdd8fa482 [2020-10-26 23:26:40,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:26:40,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:26:40,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:26:40,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:26:40,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:26:40,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:26:40" (1/1) ... [2020-10-26 23:26:40,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff29dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:40, skipping insertion in model container [2020-10-26 23:26:40,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:26:40" (1/1) ... [2020-10-26 23:26:40,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:26:40,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:26:41,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:26:41,379 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:26:41,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:26:41,580 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:26:41,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41 WrapperNode [2020-10-26 23:26:41,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:26:41,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:26:41,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:26:41,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:26:41,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (1/1) ... [2020-10-26 23:26:41,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (1/1) ... [2020-10-26 23:26:41,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (1/1) ... [2020-10-26 23:26:41,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (1/1) ... [2020-10-26 23:26:41,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (1/1) ... [2020-10-26 23:26:41,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (1/1) ... [2020-10-26 23:26:41,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (1/1) ... [2020-10-26 23:26:41,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:26:41,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:26:41,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:26:41,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:26:41,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (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 [2020-10-26 23:26:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:26:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:26:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:26:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:26:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:26:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:26:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:26:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:26:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:26:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:26:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:26:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:26:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:26:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:26:43,372 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:26:43,373 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:26:43,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:43 BoogieIcfgContainer [2020-10-26 23:26:43,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:26:43,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:26:43,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:26:43,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:26:43,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:26:40" (1/3) ... [2020-10-26 23:26:43,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a00844b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:26:43, skipping insertion in model container [2020-10-26 23:26:43,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:41" (2/3) ... [2020-10-26 23:26:43,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a00844b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:26:43, skipping insertion in model container [2020-10-26 23:26:43,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:43" (3/3) ... [2020-10-26 23:26:43,384 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-10-26 23:26:43,396 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:26:43,401 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:26:43,414 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:26:43,448 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:26:43,448 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:26:43,449 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:26:43,449 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:26:43,449 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:26:43,449 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:26:43,449 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:26:43,449 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:26:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:26:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 23:26:43,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:43,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:43,481 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:43,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:43,487 INFO L82 PathProgramCache]: Analyzing trace with hash -735346048, now seen corresponding path program 1 times [2020-10-26 23:26:43,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:43,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504399285] [2020-10-26 23:26:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 23:26:44,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-26 23:26:44,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 23:26:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:26:44,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:44,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:44,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:44,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:44,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:26:44,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:26:44,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:26:44,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504399285] [2020-10-26 23:26:44,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:44,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:26:44,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530502199] [2020-10-26 23:26:44,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:26:44,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:44,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:26:44,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:26:44,562 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:26:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:46,904 INFO L93 Difference]: Finished difference Result 719 states and 1261 transitions. [2020-10-26 23:26:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:26:46,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-26 23:26:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:46,923 INFO L225 Difference]: With dead ends: 719 [2020-10-26 23:26:46,923 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:26:46,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:26:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:26:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-26 23:26:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-26 23:26:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 526 transitions. [2020-10-26 23:26:47,024 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 526 transitions. Word has length 50 [2020-10-26 23:26:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:47,025 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 526 transitions. [2020-10-26 23:26:47,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:26:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 526 transitions. [2020-10-26 23:26:47,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-26 23:26:47,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:47,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:47,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:26:47,034 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:47,035 INFO L82 PathProgramCache]: Analyzing trace with hash -606421564, now seen corresponding path program 1 times [2020-10-26 23:26:47,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:47,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367297471] [2020-10-26 23:26:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:48,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-26 23:26:48,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-10-26 23:26:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:26:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:48,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:48,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:48,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:26:48,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:48,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:48,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:48,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:48,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:26:48,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:48,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:48,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:26:48,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367297471] [2020-10-26 23:26:48,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:48,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:26:48,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756386609] [2020-10-26 23:26:48,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:48,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:48,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:48,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:48,973 INFO L87 Difference]: Start difference. First operand 375 states and 526 transitions. Second operand 7 states. [2020-10-26 23:26:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:51,140 INFO L93 Difference]: Finished difference Result 946 states and 1300 transitions. [2020-10-26 23:26:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:26:51,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-26 23:26:51,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:51,148 INFO L225 Difference]: With dead ends: 946 [2020-10-26 23:26:51,148 INFO L226 Difference]: Without dead ends: 577 [2020-10-26 23:26:51,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:26:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-26 23:26:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 559. [2020-10-26 23:26:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:26:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 723 transitions. [2020-10-26 23:26:51,222 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 723 transitions. Word has length 123 [2020-10-26 23:26:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:51,222 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 723 transitions. [2020-10-26 23:26:51,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 723 transitions. [2020-10-26 23:26:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-26 23:26:51,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:51,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:51,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:26:51,235 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:51,236 INFO L82 PathProgramCache]: Analyzing trace with hash -346989124, now seen corresponding path program 1 times [2020-10-26 23:26:51,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:51,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324502214] [2020-10-26 23:26:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:51,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:52,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:54,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-26 23:26:55,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:26:55,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3886 [2020-10-26 23:26:55,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:26:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:55,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:26:55,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:55,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:55,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:55,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:26:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:26:55,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:26:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 23:26:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:55,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:26:55,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:26:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:26:55,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324502214] [2020-10-26 23:26:55,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:55,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:55,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631638088] [2020-10-26 23:26:55,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:55,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:55,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:55,626 INFO L87 Difference]: Start difference. First operand 559 states and 723 transitions. Second operand 7 states. [2020-10-26 23:26:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:58,019 INFO L93 Difference]: Finished difference Result 1132 states and 1580 transitions. [2020-10-26 23:26:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:26:58,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-10-26 23:26:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:58,026 INFO L225 Difference]: With dead ends: 1132 [2020-10-26 23:26:58,026 INFO L226 Difference]: Without dead ends: 761 [2020-10-26 23:26:58,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:26:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-10-26 23:26:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 747. [2020-10-26 23:26:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-10-26 23:26:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 964 transitions. [2020-10-26 23:26:58,066 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 964 transitions. Word has length 193 [2020-10-26 23:26:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:58,067 INFO L481 AbstractCegarLoop]: Abstraction has 747 states and 964 transitions. [2020-10-26 23:26:58,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 964 transitions. [2020-10-26 23:26:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-26 23:26:58,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:58,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:58,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:26:58,072 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:58,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:58,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1570311720, now seen corresponding path program 1 times [2020-10-26 23:26:58,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:58,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531377012] [2020-10-26 23:26:58,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:58,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:59,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-26 23:26:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1607 [2020-10-26 23:26:59,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:59,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:26:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:26:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:59,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:59,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:59,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:26:59,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:59,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:00,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:00,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:27:00,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:27:00,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:27:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:27:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:27:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:00,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 23:27:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:27:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 31 proven. 122 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:27:00,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531377012] [2020-10-26 23:27:00,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:00,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:27:00,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513237375] [2020-10-26 23:27:00,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:27:00,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:00,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:27:00,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:27:00,451 INFO L87 Difference]: Start difference. First operand 747 states and 964 transitions. Second operand 9 states. [2020-10-26 23:27:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:03,361 INFO L93 Difference]: Finished difference Result 1379 states and 1872 transitions. [2020-10-26 23:27:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:27:03,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 207 [2020-10-26 23:27:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:03,368 INFO L225 Difference]: With dead ends: 1379 [2020-10-26 23:27:03,369 INFO L226 Difference]: Without dead ends: 957 [2020-10-26 23:27:03,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:27:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-26 23:27:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 937. [2020-10-26 23:27:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-26 23:27:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1115 transitions. [2020-10-26 23:27:03,420 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1115 transitions. Word has length 207 [2020-10-26 23:27:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:03,421 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1115 transitions. [2020-10-26 23:27:03,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:27:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1115 transitions. [2020-10-26 23:27:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-26 23:27:03,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:03,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:03,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:27:03,425 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1413948356, now seen corresponding path program 1 times [2020-10-26 23:27:03,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:03,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102990457] [2020-10-26 23:27:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:06,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:06,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-26 23:27:06,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:06,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3135 [2020-10-26 23:27:06,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:06,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:27:06,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:27:06,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:27:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:06,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:06,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:06,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:06,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:06,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:27:06,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:06,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:06,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:27:06,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:06,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:06,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:06,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:27:06,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:06,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:27:06,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:27:06,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:27:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:27:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:07,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:07,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:07,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:27:07,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:27:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:27:07,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102990457] [2020-10-26 23:27:07,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:07,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:07,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656845168] [2020-10-26 23:27:07,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:27:07,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:07,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:27:07,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:07,540 INFO L87 Difference]: Start difference. First operand 937 states and 1115 transitions. Second operand 8 states. [2020-10-26 23:27:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:09,633 INFO L93 Difference]: Finished difference Result 1716 states and 2075 transitions. [2020-10-26 23:27:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:27:09,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-26 23:27:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:09,641 INFO L225 Difference]: With dead ends: 1716 [2020-10-26 23:27:09,641 INFO L226 Difference]: Without dead ends: 1151 [2020-10-26 23:27:09,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:27:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-26 23:27:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1123. [2020-10-26 23:27:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-26 23:27:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1311 transitions. [2020-10-26 23:27:09,688 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1311 transitions. Word has length 217 [2020-10-26 23:27:09,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:09,689 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1311 transitions. [2020-10-26 23:27:09,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:27:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1311 transitions. [2020-10-26 23:27:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-26 23:27:09,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:09,693 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:09,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:27:09,694 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:09,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1586967952, now seen corresponding path program 1 times [2020-10-26 23:27:09,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:09,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342998822] [2020-10-26 23:27:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:09,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-26 23:27:11,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-10-26 23:27:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:27:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 23:27:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:27:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:11,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:27:11,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:27:11,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:27:11,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:27:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:27:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:11,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-26 23:27:11,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:27:11,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 121 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:27:12,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342998822] [2020-10-26 23:27:12,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:12,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:27:12,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679311639] [2020-10-26 23:27:12,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:27:12,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:12,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:27:12,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:27:12,018 INFO L87 Difference]: Start difference. First operand 1123 states and 1311 transitions. Second operand 6 states. [2020-10-26 23:27:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:13,904 INFO L93 Difference]: Finished difference Result 2630 states and 3099 transitions. [2020-10-26 23:27:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:27:13,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 243 [2020-10-26 23:27:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:13,913 INFO L225 Difference]: With dead ends: 2630 [2020-10-26 23:27:13,913 INFO L226 Difference]: Without dead ends: 1321 [2020-10-26 23:27:13,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:13,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-26 23:27:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1121. [2020-10-26 23:27:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-26 23:27:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1255 transitions. [2020-10-26 23:27:13,959 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1255 transitions. Word has length 243 [2020-10-26 23:27:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:13,960 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1255 transitions. [2020-10-26 23:27:13,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:27:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1255 transitions. [2020-10-26 23:27:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-26 23:27:13,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:13,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:13,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:27:13,966 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:13,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1748412356, now seen corresponding path program 1 times [2020-10-26 23:27:13,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:13,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24010646] [2020-10-26 23:27:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:16,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:16,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-26 23:27:16,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:27:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2475 [2020-10-26 23:27:16,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:27:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:27:16,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-26 23:27:16,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:16,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:16,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:16,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:16,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:16,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:27:16,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:27:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:16,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:16,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:16,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:16,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:16,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:27:16,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:27:16,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:17,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:17,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:17,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:17,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 23:27:17,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:27:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 104 proven. 78 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 23:27:17,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24010646] [2020-10-26 23:27:17,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:17,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:17,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296875179] [2020-10-26 23:27:17,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:27:17,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:17,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:27:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:17,436 INFO L87 Difference]: Start difference. First operand 1121 states and 1255 transitions. Second operand 8 states. [2020-10-26 23:27:19,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:19,790 INFO L93 Difference]: Finished difference Result 2248 states and 2568 transitions. [2020-10-26 23:27:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:27:19,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2020-10-26 23:27:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:19,799 INFO L225 Difference]: With dead ends: 2248 [2020-10-26 23:27:19,800 INFO L226 Difference]: Without dead ends: 1499 [2020-10-26 23:27:19,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:19,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2020-10-26 23:27:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1489. [2020-10-26 23:27:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-10-26 23:27:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1663 transitions. [2020-10-26 23:27:19,844 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1663 transitions. Word has length 269 [2020-10-26 23:27:19,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:19,845 INFO L481 AbstractCegarLoop]: Abstraction has 1489 states and 1663 transitions. [2020-10-26 23:27:19,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:27:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1663 transitions. [2020-10-26 23:27:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-26 23:27:19,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:19,854 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:19,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:27:19,854 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:19,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:19,855 INFO L82 PathProgramCache]: Analyzing trace with hash -98171344, now seen corresponding path program 1 times [2020-10-26 23:27:19,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:19,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943479978] [2020-10-26 23:27:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:19,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:24,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:24,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-26 23:27:24,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:24,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:27:24,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:24,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:24,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:27:24,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:27:24,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:25,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:25,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:25,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:25,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:27:25,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:25,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:25,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:25,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:25,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:27:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:25,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:25,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:27:25,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:27:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:25,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:25,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:25,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:25,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:27:25,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:25,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-26 23:27:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:25,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:25,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:25,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:25,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:27:25,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 321 proven. 72 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:27:25,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943479978] [2020-10-26 23:27:25,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:25,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:25,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490881058] [2020-10-26 23:27:25,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:25,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:25,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:25,710 INFO L87 Difference]: Start difference. First operand 1489 states and 1663 transitions. Second operand 7 states. [2020-10-26 23:27:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:27,687 INFO L93 Difference]: Finished difference Result 3358 states and 3887 transitions. [2020-10-26 23:27:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:27:27,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-26 23:27:27,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:27,698 INFO L225 Difference]: With dead ends: 3358 [2020-10-26 23:27:27,698 INFO L226 Difference]: Without dead ends: 2057 [2020-10-26 23:27:27,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:27:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2020-10-26 23:27:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2051. [2020-10-26 23:27:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2020-10-26 23:27:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2291 transitions. [2020-10-26 23:27:27,758 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2291 transitions. Word has length 425 [2020-10-26 23:27:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:27,759 INFO L481 AbstractCegarLoop]: Abstraction has 2051 states and 2291 transitions. [2020-10-26 23:27:27,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2291 transitions. [2020-10-26 23:27:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-26 23:27:27,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:27,769 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:27,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:27:27,769 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:27,770 INFO L82 PathProgramCache]: Analyzing trace with hash 687905280, now seen corresponding path program 1 times [2020-10-26 23:27:27,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:27,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952555942] [2020-10-26 23:27:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:31,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:32,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:32,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-26 23:27:32,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:27:32,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 23:27:32,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:27:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:27:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:32,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:32,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:32,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:32,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:27:32,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:32,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:32,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:33,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:33,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:33,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:33,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:27:33,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:27:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:27:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:33,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:33,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:33,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:27:33,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:33,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:27:33,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:33,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:27:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:33,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:27:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:33,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:33,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:33,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:33,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:27:33,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 343 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:27:33,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952555942] [2020-10-26 23:27:33,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:33,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:33,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306975657] [2020-10-26 23:27:33,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:33,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:33,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:33,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:33,540 INFO L87 Difference]: Start difference. First operand 2051 states and 2291 transitions. Second operand 7 states. [2020-10-26 23:27:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:35,998 INFO L93 Difference]: Finished difference Result 4488 states and 5184 transitions. [2020-10-26 23:27:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:35,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-26 23:27:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:36,012 INFO L225 Difference]: With dead ends: 4488 [2020-10-26 23:27:36,012 INFO L226 Difference]: Without dead ends: 2809 [2020-10-26 23:27:36,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:27:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2020-10-26 23:27:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2611. [2020-10-26 23:27:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2611 states. [2020-10-26 23:27:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 2973 transitions. [2020-10-26 23:27:36,104 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 2973 transitions. Word has length 436 [2020-10-26 23:27:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:36,105 INFO L481 AbstractCegarLoop]: Abstraction has 2611 states and 2973 transitions. [2020-10-26 23:27:36,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 2973 transitions. [2020-10-26 23:27:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-26 23:27:36,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:36,117 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:36,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:27:36,117 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash 790948352, now seen corresponding path program 1 times [2020-10-26 23:27:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:36,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380002467] [2020-10-26 23:27:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-26 23:27:41,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:27:41,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:27:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:27:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-26 23:27:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:27:41,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:27:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:27:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:27:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:27:41,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 23:27:41,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:41,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:27:41,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-26 23:27:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:41,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:27:41,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:27:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-26 23:27:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:42,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:42,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:42,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:27:42,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 177 proven. 397 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 23:27:42,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380002467] [2020-10-26 23:27:42,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:42,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:27:42,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999267635] [2020-10-26 23:27:42,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:27:42,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:42,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:27:42,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:42,344 INFO L87 Difference]: Start difference. First operand 2611 states and 2973 transitions. Second operand 8 states. [2020-10-26 23:27:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:44,324 INFO L93 Difference]: Finished difference Result 4868 states and 5599 transitions. [2020-10-26 23:27:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:44,325 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2020-10-26 23:27:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:44,337 INFO L225 Difference]: With dead ends: 4868 [2020-10-26 23:27:44,338 INFO L226 Difference]: Without dead ends: 2629 [2020-10-26 23:27:44,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:44,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2020-10-26 23:27:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2617. [2020-10-26 23:27:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2617 states. [2020-10-26 23:27:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 2984 transitions. [2020-10-26 23:27:44,408 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 2984 transitions. Word has length 449 [2020-10-26 23:27:44,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:44,409 INFO L481 AbstractCegarLoop]: Abstraction has 2617 states and 2984 transitions. [2020-10-26 23:27:44,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:27:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 2984 transitions. [2020-10-26 23:27:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2020-10-26 23:27:44,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:44,415 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:44,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:27:44,415 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:44,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1741331128, now seen corresponding path program 1 times [2020-10-26 23:27:44,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:44,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678539502] [2020-10-26 23:27:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:49,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:49,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-26 23:27:49,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:27:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:27:49,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:27:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:27:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 23:27:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:49,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:49,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:49,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:27:49,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:49,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:49,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:49,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:49,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:49,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:49,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:49,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:49,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:49,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:49,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:27:49,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:27:49,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 23:27:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-26 23:27:50,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 23:27:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:50,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-26 23:27:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:50,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 394 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:27:51,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678539502] [2020-10-26 23:27:51,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:51,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:27:51,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322576150] [2020-10-26 23:27:51,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:27:51,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:51,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:27:51,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:27:51,279 INFO L87 Difference]: Start difference. First operand 2617 states and 2984 transitions. Second operand 9 states. [2020-10-26 23:27:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:54,054 INFO L93 Difference]: Finished difference Result 4888 states and 5638 transitions. [2020-10-26 23:27:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:54,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 528 [2020-10-26 23:27:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:54,067 INFO L225 Difference]: With dead ends: 4888 [2020-10-26 23:27:54,067 INFO L226 Difference]: Without dead ends: 2643 [2020-10-26 23:27:54,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:27:54,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2020-10-26 23:27:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2623. [2020-10-26 23:27:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2623 states. [2020-10-26 23:27:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 2991 transitions. [2020-10-26 23:27:54,136 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 2991 transitions. Word has length 528 [2020-10-26 23:27:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:54,137 INFO L481 AbstractCegarLoop]: Abstraction has 2623 states and 2991 transitions. [2020-10-26 23:27:54,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:27:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 2991 transitions. [2020-10-26 23:27:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-10-26 23:27:54,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:54,142 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:54,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:27:54,143 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:54,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1691104532, now seen corresponding path program 1 times [2020-10-26 23:27:54,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:54,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757965654] [2020-10-26 23:27:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:57,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:59,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:59,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-26 23:27:59,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:27:59,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 23:27:59,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:27:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:27:59,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:59,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:59,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:59,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:59,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:27:59,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:59,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:59,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:59,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:59,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:59,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:59,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:59,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:59,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:59,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:27:59,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:27:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:59,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:27:59,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:27:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:59,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:59,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:59,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:59,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:27:59,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:59,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:59,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:59,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-26 23:27:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:59,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:59,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:59,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:27:59,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:59,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 582 proven. 220 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-26 23:28:00,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757965654] [2020-10-26 23:28:00,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:00,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:00,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131787355] [2020-10-26 23:28:00,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:00,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:00,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:00,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:00,187 INFO L87 Difference]: Start difference. First operand 2623 states and 2991 transitions. Second operand 8 states. [2020-10-26 23:28:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:02,437 INFO L93 Difference]: Finished difference Result 5264 states and 6078 transitions. [2020-10-26 23:28:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:28:02,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 542 [2020-10-26 23:28:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:02,453 INFO L225 Difference]: With dead ends: 5264 [2020-10-26 23:28:02,454 INFO L226 Difference]: Without dead ends: 3013 [2020-10-26 23:28:02,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:28:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2020-10-26 23:28:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 2991. [2020-10-26 23:28:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2991 states. [2020-10-26 23:28:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 3388 transitions. [2020-10-26 23:28:02,531 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 3388 transitions. Word has length 542 [2020-10-26 23:28:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:02,533 INFO L481 AbstractCegarLoop]: Abstraction has 2991 states and 3388 transitions. [2020-10-26 23:28:02,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:02,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 3388 transitions. [2020-10-26 23:28:02,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-26 23:28:02,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:02,541 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:02,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:28:02,541 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:02,542 INFO L82 PathProgramCache]: Analyzing trace with hash -537530532, now seen corresponding path program 1 times [2020-10-26 23:28:02,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:02,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492085507] [2020-10-26 23:28:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:04,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:05,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 723 [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:28:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:07,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:07,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:07,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:28:07,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:07,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:07,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:07,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:07,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:07,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:28:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:28:08,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:28:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:08,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:28:08,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-26 23:28:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:08,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:08,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1613 backedges. 563 proven. 72 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-26 23:28:08,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492085507] [2020-10-26 23:28:08,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:08,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:08,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249485750] [2020-10-26 23:28:08,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:08,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:08,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:08,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:08,682 INFO L87 Difference]: Start difference. First operand 2991 states and 3388 transitions. Second operand 7 states. [2020-10-26 23:28:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:10,890 INFO L93 Difference]: Finished difference Result 5822 states and 6669 transitions. [2020-10-26 23:28:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:10,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 701 [2020-10-26 23:28:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:10,904 INFO L225 Difference]: With dead ends: 5822 [2020-10-26 23:28:10,904 INFO L226 Difference]: Without dead ends: 3203 [2020-10-26 23:28:10,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:10,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2020-10-26 23:28:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3181. [2020-10-26 23:28:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3181 states. [2020-10-26 23:28:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 3607 transitions. [2020-10-26 23:28:10,980 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 3607 transitions. Word has length 701 [2020-10-26 23:28:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:10,981 INFO L481 AbstractCegarLoop]: Abstraction has 3181 states and 3607 transitions. [2020-10-26 23:28:10,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 3607 transitions. [2020-10-26 23:28:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2020-10-26 23:28:10,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:10,989 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:10,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:28:10,990 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:10,990 INFO L82 PathProgramCache]: Analyzing trace with hash 564956728, now seen corresponding path program 1 times [2020-10-26 23:28:10,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:10,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846064159] [2020-10-26 23:28:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:11,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:16,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 741 [2020-10-26 23:28:16,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:16,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:28:16,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:28:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:28:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:28:16,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:16,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:16,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:16,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:16,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:16,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:16,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:16,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:16,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:16,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:16,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:16,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:16,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:16,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:16,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:28:16,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:28:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:17,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-26 23:28:17,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:28:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:28:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:17,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:28:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:28:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-10-26 23:28:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:28:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1613 backedges. 613 proven. 152 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2020-10-26 23:28:17,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846064159] [2020-10-26 23:28:17,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:17,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:17,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740318179] [2020-10-26 23:28:17,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:17,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:17,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:17,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:17,838 INFO L87 Difference]: Start difference. First operand 3181 states and 3607 transitions. Second operand 8 states. [2020-10-26 23:28:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:20,185 INFO L93 Difference]: Finished difference Result 6748 states and 7714 transitions. [2020-10-26 23:28:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:28:20,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 719 [2020-10-26 23:28:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:20,205 INFO L225 Difference]: With dead ends: 6748 [2020-10-26 23:28:20,205 INFO L226 Difference]: Without dead ends: 3939 [2020-10-26 23:28:20,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2020-10-26 23:28:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3917. [2020-10-26 23:28:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3917 states. [2020-10-26 23:28:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 4364 transitions. [2020-10-26 23:28:20,298 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 4364 transitions. Word has length 719 [2020-10-26 23:28:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:20,299 INFO L481 AbstractCegarLoop]: Abstraction has 3917 states and 4364 transitions. [2020-10-26 23:28:20,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 4364 transitions. [2020-10-26 23:28:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2020-10-26 23:28:20,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:20,309 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:20,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:28:20,309 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1669231984, now seen corresponding path program 1 times [2020-10-26 23:28:20,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:20,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136436067] [2020-10-26 23:28:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:23,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 764 [2020-10-26 23:28:25,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 23:28:25,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:28:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:28:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:25,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:25,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:28:25,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:25,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:25,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:25,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:25,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:25,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:25,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:26,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:26,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:26,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:28:26,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:28:26,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:26,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:26,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:28:26,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:28:26,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:28:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-10-26 23:28:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:26,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:26,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:28:26,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:28:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1778 backedges. 718 proven. 82 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-26 23:28:26,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136436067] [2020-10-26 23:28:26,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:26,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:26,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260024302] [2020-10-26 23:28:26,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:26,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:26,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:26,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:26,631 INFO L87 Difference]: Start difference. First operand 3917 states and 4364 transitions. Second operand 7 states. [2020-10-26 23:28:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:28,778 INFO L93 Difference]: Finished difference Result 8955 states and 10228 transitions. [2020-10-26 23:28:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:28:28,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 742 [2020-10-26 23:28:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:28,807 INFO L225 Difference]: With dead ends: 8955 [2020-10-26 23:28:28,808 INFO L226 Difference]: Without dead ends: 5410 [2020-10-26 23:28:28,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2020-10-26 23:28:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 5037. [2020-10-26 23:28:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5037 states. [2020-10-26 23:28:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5037 states to 5037 states and 5750 transitions. [2020-10-26 23:28:28,927 INFO L78 Accepts]: Start accepts. Automaton has 5037 states and 5750 transitions. Word has length 742 [2020-10-26 23:28:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:28,928 INFO L481 AbstractCegarLoop]: Abstraction has 5037 states and 5750 transitions. [2020-10-26 23:28:28,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5037 states and 5750 transitions. [2020-10-26 23:28:28,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-26 23:28:28,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:28,939 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:28,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:28:28,940 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:28,941 INFO L82 PathProgramCache]: Analyzing trace with hash -566077228, now seen corresponding path program 1 times [2020-10-26 23:28:28,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:28,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680328370] [2020-10-26 23:28:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:29,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 824 [2020-10-26 23:28:34,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:34,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:28:34,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:28:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:28:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:34,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:34,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:34,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:28:34,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:34,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:34,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:34,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:34,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:34,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:34,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:28:34,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:34,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:28:34,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:34,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:28:34,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:28:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:34,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:28:34,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:34,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-10-26 23:28:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:34,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:34,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:28:34,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:28:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 684 proven. 72 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2020-10-26 23:28:35,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680328370] [2020-10-26 23:28:35,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:35,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:35,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788174630] [2020-10-26 23:28:35,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:35,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:35,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:35,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:35,118 INFO L87 Difference]: Start difference. First operand 5037 states and 5750 transitions. Second operand 7 states. [2020-10-26 23:28:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:37,173 INFO L93 Difference]: Finished difference Result 9888 states and 11336 transitions. [2020-10-26 23:28:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:28:37,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 800 [2020-10-26 23:28:37,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:37,188 INFO L225 Difference]: With dead ends: 9888 [2020-10-26 23:28:37,189 INFO L226 Difference]: Without dead ends: 5223 [2020-10-26 23:28:37,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:28:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2020-10-26 23:28:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 5219. [2020-10-26 23:28:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5219 states. [2020-10-26 23:28:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 5938 transitions. [2020-10-26 23:28:37,292 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 5938 transitions. Word has length 800 [2020-10-26 23:28:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:37,293 INFO L481 AbstractCegarLoop]: Abstraction has 5219 states and 5938 transitions. [2020-10-26 23:28:37,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 5938 transitions. [2020-10-26 23:28:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2020-10-26 23:28:37,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:37,306 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:37,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:28:37,306 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:37,306 INFO L82 PathProgramCache]: Analyzing trace with hash -983192840, now seen corresponding path program 1 times [2020-10-26 23:28:37,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:37,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14210848] [2020-10-26 23:28:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:41,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 898 [2020-10-26 23:28:42,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:28:42,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:28:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:28:42,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:42,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:28:42,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:42,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:42,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:42,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:42,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:42,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:42,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:42,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:28:42,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:42,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:42,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:28:42,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:28:43,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:43,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:28:43,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:28:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:43,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:28:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:43,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:28:43,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-26 23:28:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:43,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:43,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:43,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:43,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:28:43,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:28:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2306 backedges. 684 proven. 72 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2020-10-26 23:28:43,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14210848] [2020-10-26 23:28:43,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:43,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:43,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705333755] [2020-10-26 23:28:43,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:43,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:43,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:43,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:43,882 INFO L87 Difference]: Start difference. First operand 5219 states and 5938 transitions. Second operand 7 states. [2020-10-26 23:28:45,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:45,992 INFO L93 Difference]: Finished difference Result 10258 states and 11733 transitions. [2020-10-26 23:28:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:45,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 874 [2020-10-26 23:28:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:46,012 INFO L225 Difference]: With dead ends: 10258 [2020-10-26 23:28:46,012 INFO L226 Difference]: Without dead ends: 5411 [2020-10-26 23:28:46,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2020-10-26 23:28:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5401. [2020-10-26 23:28:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5401 states. [2020-10-26 23:28:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 6128 transitions. [2020-10-26 23:28:46,120 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 6128 transitions. Word has length 874 [2020-10-26 23:28:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:46,121 INFO L481 AbstractCegarLoop]: Abstraction has 5401 states and 6128 transitions. [2020-10-26 23:28:46,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 6128 transitions. [2020-10-26 23:28:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-26 23:28:46,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:46,134 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:46,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:28:46,135 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:46,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1926524104, now seen corresponding path program 2 times [2020-10-26 23:28:46,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:46,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371611649] [2020-10-26 23:28:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 907 [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 23:28:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:51,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:28:51,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:51,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:51,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:28:51,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:51,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:51,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:51,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:51,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:28:51,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:51,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:28:51,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:28:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:51,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:28:51,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:28:51,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:28:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:51,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:51,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:28:51,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2020-10-26 23:28:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:52,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:28:52,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:28:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2734 backedges. 1128 proven. 152 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked. [2020-10-26 23:28:52,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371611649] [2020-10-26 23:28:52,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:52,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:52,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407170686] [2020-10-26 23:28:52,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:52,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:52,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:52,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:52,601 INFO L87 Difference]: Start difference. First operand 5401 states and 6128 transitions. Second operand 7 states. [2020-10-26 23:28:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:55,540 INFO L93 Difference]: Finished difference Result 11367 states and 12954 transitions. [2020-10-26 23:28:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:28:55,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 881 [2020-10-26 23:28:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:55,558 INFO L225 Difference]: With dead ends: 11367 [2020-10-26 23:28:55,558 INFO L226 Difference]: Without dead ends: 6154 [2020-10-26 23:28:55,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2020-10-26 23:28:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6137. [2020-10-26 23:28:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6137 states. [2020-10-26 23:28:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 6944 transitions. [2020-10-26 23:28:55,674 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 6944 transitions. Word has length 881 [2020-10-26 23:28:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:55,675 INFO L481 AbstractCegarLoop]: Abstraction has 6137 states and 6944 transitions. [2020-10-26 23:28:55,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:55,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 6944 transitions. [2020-10-26 23:28:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2020-10-26 23:28:55,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:55,689 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:55,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:28:55,690 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:55,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:55,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1255733028, now seen corresponding path program 1 times [2020-10-26 23:28:55,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:55,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610484317] [2020-10-26 23:28:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:00,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:00,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 925 [2020-10-26 23:29:00,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:29:00,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:29:00,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:00,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:00,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:29:00,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:29:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:01,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:01,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:01,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:29:01,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:01,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:01,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:01,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:29:01,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:29:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:01,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:29:01,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:29:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:29:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:01,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:29:01,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:29:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:29:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:01,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:29:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2020-10-26 23:29:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:01,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:01,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:01,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:29:01,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:29:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2865 backedges. 1224 proven. 300 refuted. 0 times theorem prover too weak. 1341 trivial. 0 not checked. [2020-10-26 23:29:02,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610484317] [2020-10-26 23:29:02,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:02,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:29:02,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963279376] [2020-10-26 23:29:02,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:02,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:02,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:02,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:02,190 INFO L87 Difference]: Start difference. First operand 6137 states and 6944 transitions. Second operand 8 states. [2020-10-26 23:29:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:05,246 INFO L93 Difference]: Finished difference Result 12113 states and 13727 transitions. [2020-10-26 23:29:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:29:05,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 899 [2020-10-26 23:29:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:05,269 INFO L225 Difference]: With dead ends: 12113 [2020-10-26 23:29:05,269 INFO L226 Difference]: Without dead ends: 6348 [2020-10-26 23:29:05,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:29:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2020-10-26 23:29:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6143. [2020-10-26 23:29:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6143 states. [2020-10-26 23:29:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 6891 transitions. [2020-10-26 23:29:05,406 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 6891 transitions. Word has length 899 [2020-10-26 23:29:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:05,407 INFO L481 AbstractCegarLoop]: Abstraction has 6143 states and 6891 transitions. [2020-10-26 23:29:05,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:05,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 6891 transitions. [2020-10-26 23:29:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2020-10-26 23:29:05,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:05,421 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:05,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:29:05,422 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1472296420, now seen corresponding path program 1 times [2020-10-26 23:29:05,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:05,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426812368] [2020-10-26 23:29:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:09,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-26 23:29:10,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-26 23:29:10,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:29:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:10,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:29:10,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:29:10,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:10,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:29:10,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:10,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:10,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:10,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:29:10,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:10,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:11,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:29:11,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:11,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:29:11,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:11,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:29:11,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:29:11,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:29:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:29:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:11,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:11,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:11,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:11,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 23:29:11,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:11,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 1432 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:29:12,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426812368] [2020-10-26 23:29:12,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:12,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:29:12,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554264607] [2020-10-26 23:29:12,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:29:12,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:12,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:29:12,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:12,256 INFO L87 Difference]: Start difference. First operand 6143 states and 6891 transitions. Second operand 10 states. [2020-10-26 23:29:14,830 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-26 23:29:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:15,734 INFO L93 Difference]: Finished difference Result 13075 states and 14898 transitions. [2020-10-26 23:29:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:29:15,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 917 [2020-10-26 23:29:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:15,767 INFO L225 Difference]: With dead ends: 13075 [2020-10-26 23:29:15,767 INFO L226 Difference]: Without dead ends: 7269 [2020-10-26 23:29:15,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:29:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2020-10-26 23:29:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 6887. [2020-10-26 23:29:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6887 states. [2020-10-26 23:29:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 7901 transitions. [2020-10-26 23:29:15,914 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 7901 transitions. Word has length 917 [2020-10-26 23:29:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:15,915 INFO L481 AbstractCegarLoop]: Abstraction has 6887 states and 7901 transitions. [2020-10-26 23:29:15,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:29:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 7901 transitions. [2020-10-26 23:29:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-26 23:29:15,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:15,930 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:15,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:29:15,931 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1538800484, now seen corresponding path program 1 times [2020-10-26 23:29:15,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:15,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443259502] [2020-10-26 23:29:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:18,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 976 [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:29:21,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:21,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:29:21,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:21,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:21,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:21,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:21,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:21,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:29:21,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:21,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:29:21,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:21,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:29:21,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:29:21,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:29:21,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:29:21,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:29:21,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:29:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:22,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:22,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:22,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:22,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:29:22,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:22,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 1468 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:29:22,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443259502] [2020-10-26 23:29:22,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:22,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:29:22,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836495749] [2020-10-26 23:29:22,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:29:22,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:22,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:29:22,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:22,797 INFO L87 Difference]: Start difference. First operand 6887 states and 7901 transitions. Second operand 10 states. [2020-10-26 23:29:26,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:26,254 INFO L93 Difference]: Finished difference Result 13813 states and 15883 transitions. [2020-10-26 23:29:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:29:26,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 950 [2020-10-26 23:29:26,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:26,275 INFO L225 Difference]: With dead ends: 13813 [2020-10-26 23:29:26,275 INFO L226 Difference]: Without dead ends: 7265 [2020-10-26 23:29:26,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:29:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7265 states. [2020-10-26 23:29:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7265 to 6887. [2020-10-26 23:29:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6887 states. [2020-10-26 23:29:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 7895 transitions. [2020-10-26 23:29:26,411 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 7895 transitions. Word has length 950 [2020-10-26 23:29:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:26,412 INFO L481 AbstractCegarLoop]: Abstraction has 6887 states and 7895 transitions. [2020-10-26 23:29:26,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:29:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 7895 transitions. [2020-10-26 23:29:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-26 23:29:26,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:26,425 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:26,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:29:26,426 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:26,426 INFO L82 PathProgramCache]: Analyzing trace with hash -752289184, now seen corresponding path program 1 times [2020-10-26 23:29:26,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:26,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442977249] [2020-10-26 23:29:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:26,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:31,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:31,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-26 23:29:31,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-26 23:29:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:29:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:31,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:29:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:31,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:31,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:31,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:31,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:31,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:31,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:29:31,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:31,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:31,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:31,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:29:31,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:31,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:31,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:31,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:31,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:31,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:29:31,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:32,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:29:32,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:32,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:29:32,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:29:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:29:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:29:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:29:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:32,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:32,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:29:32,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1469 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:29:33,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442977249] [2020-10-26 23:29:33,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:33,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:29:33,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576365444] [2020-10-26 23:29:33,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:29:33,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:33,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:29:33,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:33,392 INFO L87 Difference]: Start difference. First operand 6887 states and 7895 transitions. Second operand 10 states. [2020-10-26 23:29:36,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:36,874 INFO L93 Difference]: Finished difference Result 13819 states and 15883 transitions. [2020-10-26 23:29:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:29:36,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 951 [2020-10-26 23:29:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:36,893 INFO L225 Difference]: With dead ends: 13819 [2020-10-26 23:29:36,893 INFO L226 Difference]: Without dead ends: 7263 [2020-10-26 23:29:36,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:29:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7263 states. [2020-10-26 23:29:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7263 to 7067. [2020-10-26 23:29:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7067 states. [2020-10-26 23:29:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7067 states to 7067 states and 8008 transitions. [2020-10-26 23:29:37,039 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 8008 transitions. Word has length 951 [2020-10-26 23:29:37,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:37,040 INFO L481 AbstractCegarLoop]: Abstraction has 7067 states and 8008 transitions. [2020-10-26 23:29:37,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:29:37,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 8008 transitions. [2020-10-26 23:29:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-26 23:29:37,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:37,059 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:37,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:29:37,059 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:37,060 INFO L82 PathProgramCache]: Analyzing trace with hash 213323020, now seen corresponding path program 1 times [2020-10-26 23:29:37,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:37,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876604843] [2020-10-26 23:29:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 999 [2020-10-26 23:29:40,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:29:40,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3129 [2020-10-26 23:29:40,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:29:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:29:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:40,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:40,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:40,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:40,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:40,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:40,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:40,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:40,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:40,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:29:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:40,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:29:40,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:40,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:29:40,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:29:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:29:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:29:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:41,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:41,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:29:41,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:29:41,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:29:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2892 backedges. 863 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-26 23:29:41,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876604843] [2020-10-26 23:29:41,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:41,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:41,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056745807] [2020-10-26 23:29:41,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:41,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:41,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:41,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:41,612 INFO L87 Difference]: Start difference. First operand 7067 states and 8008 transitions. Second operand 7 states. [2020-10-26 23:29:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:43,908 INFO L93 Difference]: Finished difference Result 15992 states and 18402 transitions. [2020-10-26 23:29:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:29:43,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 973 [2020-10-26 23:29:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:43,927 INFO L225 Difference]: With dead ends: 15992 [2020-10-26 23:29:43,928 INFO L226 Difference]: Without dead ends: 9105 [2020-10-26 23:29:43,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9105 states. [2020-10-26 23:29:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9105 to 8917. [2020-10-26 23:29:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8917 states. [2020-10-26 23:29:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8917 states to 8917 states and 9879 transitions. [2020-10-26 23:29:44,087 INFO L78 Accepts]: Start accepts. Automaton has 8917 states and 9879 transitions. Word has length 973 [2020-10-26 23:29:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:44,088 INFO L481 AbstractCegarLoop]: Abstraction has 8917 states and 9879 transitions. [2020-10-26 23:29:44,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8917 states and 9879 transitions. [2020-10-26 23:29:44,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-26 23:29:44,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:44,104 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:44,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:29:44,104 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:44,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1645157136, now seen corresponding path program 1 times [2020-10-26 23:29:44,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:44,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32577718] [2020-10-26 23:29:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1001 [2020-10-26 23:29:48,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:48,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3802 [2020-10-26 23:29:48,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 864 [2020-10-26 23:29:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:29:48,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:48,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:48,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:48,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:48,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:48,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:29:48,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:29:48,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:29:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:29:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 23:29:48,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:29:48,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:48,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:29:48,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-10-26 23:29:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:48,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:48,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:29:48,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:48,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2619 backedges. 799 proven. 2 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2020-10-26 23:29:50,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32577718] [2020-10-26 23:29:50,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:50,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:50,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635022052] [2020-10-26 23:29:50,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:50,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:50,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:50,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:50,075 INFO L87 Difference]: Start difference. First operand 8917 states and 9879 transitions. Second operand 7 states. [2020-10-26 23:29:52,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:52,074 INFO L93 Difference]: Finished difference Result 17527 states and 19451 transitions. [2020-10-26 23:29:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:29:52,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 977 [2020-10-26 23:29:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:52,094 INFO L225 Difference]: With dead ends: 17527 [2020-10-26 23:29:52,094 INFO L226 Difference]: Without dead ends: 8941 [2020-10-26 23:29:52,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8941 states. [2020-10-26 23:29:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8941 to 8727. [2020-10-26 23:29:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8727 states. [2020-10-26 23:29:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8727 states to 8727 states and 9520 transitions. [2020-10-26 23:29:52,246 INFO L78 Accepts]: Start accepts. Automaton has 8727 states and 9520 transitions. Word has length 977 [2020-10-26 23:29:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:52,247 INFO L481 AbstractCegarLoop]: Abstraction has 8727 states and 9520 transitions. [2020-10-26 23:29:52,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 8727 states and 9520 transitions. [2020-10-26 23:29:52,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-26 23:29:52,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:52,261 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:52,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 23:29:52,261 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:52,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1688762380, now seen corresponding path program 1 times [2020-10-26 23:29:52,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:52,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941463183] [2020-10-26 23:29:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4482 [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:29:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:57,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:57,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:57,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:57,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:57,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:29:57,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:29:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:57,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:29:57,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:57,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-26 23:29:57,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:29:57,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:29:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:29:57,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:29:57,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:29:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 1510 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-26 23:29:58,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941463183] [2020-10-26 23:29:58,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:58,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:29:58,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835015386] [2020-10-26 23:29:58,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:29:58,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:58,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:29:58,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:29:58,448 INFO L87 Difference]: Start difference. First operand 8727 states and 9520 transitions. Second operand 9 states. [2020-10-26 23:30:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:02,041 INFO L93 Difference]: Finished difference Result 17078 states and 18632 transitions. [2020-10-26 23:30:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:30:02,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 985 [2020-10-26 23:30:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:02,057 INFO L225 Difference]: With dead ends: 17078 [2020-10-26 23:30:02,057 INFO L226 Difference]: Without dead ends: 8723 [2020-10-26 23:30:02,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-26 23:30:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8723 states. [2020-10-26 23:30:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8723 to 8355. [2020-10-26 23:30:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8355 states. [2020-10-26 23:30:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 9018 transitions. [2020-10-26 23:30:02,317 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 9018 transitions. Word has length 985 [2020-10-26 23:30:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:02,318 INFO L481 AbstractCegarLoop]: Abstraction has 8355 states and 9018 transitions. [2020-10-26 23:30:02,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:30:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 9018 transitions. [2020-10-26 23:30:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-26 23:30:02,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:02,331 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:02,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 23:30:02,331 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash -314609336, now seen corresponding path program 1 times [2020-10-26 23:30:02,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:02,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374977893] [2020-10-26 23:30:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:07,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:07,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1062 [2020-10-26 23:30:07,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-26 23:30:07,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:30:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:30:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:30:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:07,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:07,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:07,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:07,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:07,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:07,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:07,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:30:07,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:07,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:07,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:07,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:07,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:30:07,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:07,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:07,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:07,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:07,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:07,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:07,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:30:07,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:30:08,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:30:08,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:30:08,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:30:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:30:08,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:30:08,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:08,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:30:08,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:30:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:08,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:08,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:30:08,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:08,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:30:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:08,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:08,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-26 23:30:08,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:30:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0