/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:10:50,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:10:50,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:10:51,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:10:51,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:10:51,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:10:51,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:10:51,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:10:51,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:10:51,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:10:51,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:10:51,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:10:51,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:10:51,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:10:51,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:10:51,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:10:51,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:10:51,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:10:51,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:10:51,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:10:51,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:10:51,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:10:51,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:10:51,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:10:51,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:10:51,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:10:51,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:10:51,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:10:51,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:10:51,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:10:51,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:10:51,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:10:51,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:10:51,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:10:51,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:10:51,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:10:51,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:10:51,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:10:51,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:10:51,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:10:51,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:10:51,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:10:51,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:10:51,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:10:51,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:10:51,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:10:51,218 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:10:51,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:10:51,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:10:51,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:10:51,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:10:51,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:10:51,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:10:51,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:10:51,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:10:51,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:10:51,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:10:51,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:10:51,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:10:51,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:10:51,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:10:51,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:10:51,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:10:51,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:10:51,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:10:51,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:10:51,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:10:51,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:10:51,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:10:51,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:10:51,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:10:51,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:10:51,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:10:51,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:10:51,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:10:51,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:10:51,651 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:10:51,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31.c [2020-10-27 19:10:51,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/437625b41/6caf0dc93e7647abb25b4d51ac081663/FLAG09ff4a0c7 [2020-10-27 19:10:52,877 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:10:52,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label31.c [2020-10-27 19:10:52,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/437625b41/6caf0dc93e7647abb25b4d51ac081663/FLAG09ff4a0c7 [2020-10-27 19:10:53,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/437625b41/6caf0dc93e7647abb25b4d51ac081663 [2020-10-27 19:10:53,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:10:53,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:10:53,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:10:53,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:10:53,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:10:53,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:10:53" (1/1) ... [2020-10-27 19:10:53,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571e44c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:53, skipping insertion in model container [2020-10-27 19:10:53,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:10:53" (1/1) ... [2020-10-27 19:10:53,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:10:53,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:10:54,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:10:54,651 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:10:55,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:10:55,315 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:10:55,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55 WrapperNode [2020-10-27 19:10:55,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:10:55,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:10:55,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:10:55,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:10:55,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (1/1) ... [2020-10-27 19:10:55,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (1/1) ... [2020-10-27 19:10:55,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (1/1) ... [2020-10-27 19:10:55,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (1/1) ... [2020-10-27 19:10:55,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (1/1) ... [2020-10-27 19:10:55,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (1/1) ... [2020-10-27 19:10:55,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (1/1) ... [2020-10-27 19:10:55,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:10:55,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:10:55,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:10:55,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:10:55,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:10:55,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:10:55,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:10:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:10:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:10:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:10:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:10:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:10:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:10:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:10:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:10:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:10:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:10:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:10:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:10:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:10:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:10:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:10:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:10:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:10:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:10:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:10:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:10:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:11:00,206 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:11:00,207 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:11:00,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:11:00 BoogieIcfgContainer [2020-10-27 19:11:00,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:11:00,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:11:00,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:11:00,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:11:00,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:10:53" (1/3) ... [2020-10-27 19:11:00,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1753119d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:11:00, skipping insertion in model container [2020-10-27 19:11:00,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:55" (2/3) ... [2020-10-27 19:11:00,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1753119d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:11:00, skipping insertion in model container [2020-10-27 19:11:00,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:11:00" (3/3) ... [2020-10-27 19:11:00,226 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label31.c [2020-10-27 19:11:00,244 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:11:00,251 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:11:00,268 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:11:00,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:11:00,322 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:11:00,322 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:11:00,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:11:00,323 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:11:00,323 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:11:00,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:11:00,323 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:11:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:11:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:11:00,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:00,386 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] [2020-10-27 19:11:00,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:00,398 INFO L82 PathProgramCache]: Analyzing trace with hash 411853024, now seen corresponding path program 1 times [2020-10-27 19:11:00,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:00,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194026767] [2020-10-27 19:11:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:00,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:01,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:01,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:11:01,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-27 19:11:01,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:11:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:11:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 19:11:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:11:01,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:01,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:01,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:01,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 19:11:01,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:11:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:01,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194026767] [2020-10-27 19:11:01,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:11:01,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:11:01,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402431209] [2020-10-27 19:11:01,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:11:01,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:01,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:11:01,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:11:01,383 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 19:11:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:11,062 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-27 19:11:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:11:11,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-27 19:11:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:11,104 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 19:11:11,105 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 19:11:11,117 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 [2020-10-27 19:11:11,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 19:11:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-27 19:11:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-27 19:11:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-27 19:11:11,278 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 22 [2020-10-27 19:11:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:11,279 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-27 19:11:11,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:11:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-27 19:11:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 19:11:11,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:11,287 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:11,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:11:11,288 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:11,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:11,289 INFO L82 PathProgramCache]: Analyzing trace with hash -737206626, now seen corresponding path program 1 times [2020-10-27 19:11:11,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:11,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769538744] [2020-10-27 19:11:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:11,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:12,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:12,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 19:11:12,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:11:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-27 19:11:12,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 19:11:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:11:12,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:11:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:12,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:12,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:12,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:11:12,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:12,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:11:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:12,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:12,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:11:12,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 19:11:12,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:11:12,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:12,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769538744] [2020-10-27 19:11:12,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:12,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:11:12,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29856540] [2020-10-27 19:11:12,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:11:12,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:12,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:11:12,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:12,796 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 6 states. [2020-10-27 19:11:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:28,230 INFO L93 Difference]: Finished difference Result 4286 states and 7378 transitions. [2020-10-27 19:11:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:11:28,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-27 19:11:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:28,250 INFO L225 Difference]: With dead ends: 4286 [2020-10-27 19:11:28,250 INFO L226 Difference]: Without dead ends: 2863 [2020-10-27 19:11:28,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:11:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-10-27 19:11:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2857. [2020-10-27 19:11:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2857 states. [2020-10-27 19:11:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4632 transitions. [2020-10-27 19:11:28,356 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4632 transitions. Word has length 91 [2020-10-27 19:11:28,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:28,357 INFO L481 AbstractCegarLoop]: Abstraction has 2857 states and 4632 transitions. [2020-10-27 19:11:28,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:11:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4632 transitions. [2020-10-27 19:11:28,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 19:11:28,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:28,360 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:28,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:11:28,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:28,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1918800918, now seen corresponding path program 1 times [2020-10-27 19:11:28,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:28,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948557931] [2020-10-27 19:11:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:29,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:29,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 19:11:29,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:11:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-10-27 19:11:29,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 19:11:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:11:29,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:29,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:29,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:29,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:29,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:29,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:11:29,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:29,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:29,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:11:29,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 19:11:29,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 19:11:29,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:29,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948557931] [2020-10-27 19:11:29,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:29,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:29,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511324401] [2020-10-27 19:11:29,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:29,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:29,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:29,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:29,418 INFO L87 Difference]: Start difference. First operand 2857 states and 4632 transitions. Second operand 5 states. [2020-10-27 19:11:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:40,320 INFO L93 Difference]: Finished difference Result 8554 states and 14032 transitions. [2020-10-27 19:11:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:11:40,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-27 19:11:40,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:40,362 INFO L225 Difference]: With dead ends: 8554 [2020-10-27 19:11:40,362 INFO L226 Difference]: Without dead ends: 5703 [2020-10-27 19:11:40,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2020-10-27 19:11:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5691. [2020-10-27 19:11:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5691 states. [2020-10-27 19:11:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5691 states to 5691 states and 8208 transitions. [2020-10-27 19:11:40,571 INFO L78 Accepts]: Start accepts. Automaton has 5691 states and 8208 transitions. Word has length 95 [2020-10-27 19:11:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:40,572 INFO L481 AbstractCegarLoop]: Abstraction has 5691 states and 8208 transitions. [2020-10-27 19:11:40,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:11:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5691 states and 8208 transitions. [2020-10-27 19:11:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 19:11:40,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:40,575 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:40,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:11:40,575 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1512675884, now seen corresponding path program 1 times [2020-10-27 19:11:40,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:40,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900113101] [2020-10-27 19:11:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:41,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:41,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 19:11:41,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:11:41,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-10-27 19:11:41,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 19:11:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:11:41,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:11:41,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:41,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:41,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:41,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:11:41,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 19:11:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 19:11:41,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 19:11:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:42,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900113101] [2020-10-27 19:11:42,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:42,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:42,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765299697] [2020-10-27 19:11:42,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:42,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:42,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:42,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:42,055 INFO L87 Difference]: Start difference. First operand 5691 states and 8208 transitions. Second operand 5 states. [2020-10-27 19:11:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:53,488 INFO L93 Difference]: Finished difference Result 14222 states and 21252 transitions. [2020-10-27 19:11:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:11:53,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-27 19:11:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:53,553 INFO L225 Difference]: With dead ends: 14222 [2020-10-27 19:11:53,553 INFO L226 Difference]: Without dead ends: 8537 [2020-10-27 19:11:53,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2020-10-27 19:11:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 8525. [2020-10-27 19:11:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8525 states. [2020-10-27 19:11:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 11501 transitions. [2020-10-27 19:11:53,858 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 11501 transitions. Word has length 102 [2020-10-27 19:11:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:53,860 INFO L481 AbstractCegarLoop]: Abstraction has 8525 states and 11501 transitions. [2020-10-27 19:11:53,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:11:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 11501 transitions. [2020-10-27 19:11:53,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 19:11:53,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:53,877 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:53,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:11:53,878 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:53,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1243897792, now seen corresponding path program 1 times [2020-10-27 19:11:53,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:53,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473427662] [2020-10-27 19:11:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:53,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:54,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:54,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 19:11:54,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:11:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-27 19:11:54,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 19:11:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:11:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:54,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:54,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:54,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:54,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:11:54,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:54,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:54,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:54,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:11:54,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:54,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 19:11:54,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:11:54,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:55,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473427662] [2020-10-27 19:11:55,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:55,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:55,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052284408] [2020-10-27 19:11:55,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:55,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:55,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:55,061 INFO L87 Difference]: Start difference. First operand 8525 states and 11501 transitions. Second operand 5 states. [2020-10-27 19:12:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:12:07,677 INFO L93 Difference]: Finished difference Result 22020 states and 30462 transitions. [2020-10-27 19:12:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:12:07,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 19:12:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:12:07,739 INFO L225 Difference]: With dead ends: 22020 [2020-10-27 19:12:07,739 INFO L226 Difference]: Without dead ends: 13501 [2020-10-27 19:12:07,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:12:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13501 states. [2020-10-27 19:12:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13501 to 13497. [2020-10-27 19:12:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13497 states. [2020-10-27 19:12:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 18419 transitions. [2020-10-27 19:12:08,111 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 18419 transitions. Word has length 144 [2020-10-27 19:12:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:12:08,112 INFO L481 AbstractCegarLoop]: Abstraction has 13497 states and 18419 transitions. [2020-10-27 19:12:08,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:12:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 18419 transitions. [2020-10-27 19:12:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 19:12:08,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:12:08,118 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:12:08,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:12:08,118 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:12:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:12:08,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1959967948, now seen corresponding path program 1 times [2020-10-27 19:12:08,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:12:08,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252772138] [2020-10-27 19:12:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:12:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:09,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:09,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 19:12:09,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:12:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-27 19:12:09,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:12:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 19:12:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:12:09,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:09,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:12:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:09,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:09,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:09,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:12:09,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:12:09,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:09,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:09,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:12:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:09,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:09,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 19:12:09,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 19:12:09,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:12:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 19:12:09,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:12:09,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252772138] [2020-10-27 19:12:09,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:12:09,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:12:09,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620860685] [2020-10-27 19:12:09,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:12:09,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:12:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:12:09,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:12:09,643 INFO L87 Difference]: Start difference. First operand 13497 states and 18419 transitions. Second operand 5 states. [2020-10-27 19:12:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:12:22,126 INFO L93 Difference]: Finished difference Result 35499 states and 50447 transitions. [2020-10-27 19:12:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:12:22,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-27 19:12:22,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:12:22,217 INFO L225 Difference]: With dead ends: 35499 [2020-10-27 19:12:22,217 INFO L226 Difference]: Without dead ends: 22008 [2020-10-27 19:12:22,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:12:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22008 states. [2020-10-27 19:12:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22008 to 19196. [2020-10-27 19:12:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19196 states. [2020-10-27 19:12:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19196 states to 19196 states and 25267 transitions. [2020-10-27 19:12:22,775 INFO L78 Accepts]: Start accepts. Automaton has 19196 states and 25267 transitions. Word has length 170 [2020-10-27 19:12:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:12:22,776 INFO L481 AbstractCegarLoop]: Abstraction has 19196 states and 25267 transitions. [2020-10-27 19:12:22,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:12:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 19196 states and 25267 transitions. [2020-10-27 19:12:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-27 19:12:22,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:12:22,783 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:12:22,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:12:22,783 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:12:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:12:22,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1840903232, now seen corresponding path program 1 times [2020-10-27 19:12:22,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:12:22,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410288544] [2020-10-27 19:12:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:12:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:25,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 19:12:25,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:12:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3062 [2020-10-27 19:12:25,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:12:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-27 19:12:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:12:25,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:12:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:25,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:25,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:12:25,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:12:25,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:12:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:26,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:26,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:12:26,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 19:12:26,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 19:12:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:26,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:26,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:26,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 19:12:26,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:26,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 19:12:26,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:12:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 19:12:26,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 19:12:26,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410288544] [2020-10-27 19:12:26,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:12:26,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:12:26,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481681144] [2020-10-27 19:12:26,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:12:26,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:12:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:12:26,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:12:26,241 INFO L87 Difference]: Start difference. First operand 19196 states and 25267 transitions. Second operand 6 states. [2020-10-27 19:12:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:12:43,883 INFO L93 Difference]: Finished difference Result 53968 states and 76091 transitions. [2020-10-27 19:12:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:12:43,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2020-10-27 19:12:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:12:44,033 INFO L225 Difference]: With dead ends: 53968 [2020-10-27 19:12:44,033 INFO L226 Difference]: Without dead ends: 34778 [2020-10-27 19:12:44,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:12:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34778 states. [2020-10-27 19:12:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34778 to 34072. [2020-10-27 19:12:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34072 states. [2020-10-27 19:12:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34072 states to 34072 states and 46137 transitions. [2020-10-27 19:12:45,021 INFO L78 Accepts]: Start accepts. Automaton has 34072 states and 46137 transitions. Word has length 186 [2020-10-27 19:12:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:12:45,022 INFO L481 AbstractCegarLoop]: Abstraction has 34072 states and 46137 transitions. [2020-10-27 19:12:45,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:12:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 34072 states and 46137 transitions. [2020-10-27 19:12:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-27 19:12:45,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:12:45,057 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:12:45,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:12:45,057 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:12:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:12:45,058 INFO L82 PathProgramCache]: Analyzing trace with hash 49098520, now seen corresponding path program 1 times [2020-10-27 19:12:45,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:12:45,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831753844] [2020-10-27 19:12:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:12:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:45,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:48,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:48,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-27 19:12:48,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:12:48,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3252 [2020-10-27 19:12:48,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:48,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:12:48,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-27 19:12:48,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 19:12:48,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:48,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:12:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:48,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:48,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:12:48,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:12:48,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:12:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:49,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-27 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-27 19:12:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:12:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:49,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 19:12:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 19:12:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:12:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:12:49,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831753844] [2020-10-27 19:12:49,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:12:49,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:12:49,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607373677] [2020-10-27 19:12:49,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:12:49,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:12:49,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:12:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:12:49,587 INFO L87 Difference]: Start difference. First operand 34072 states and 46137 transitions. Second operand 5 states. [2020-10-27 19:13:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:13:02,151 INFO L93 Difference]: Finished difference Result 86524 states and 118193 transitions. [2020-10-27 19:13:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:13:02,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-10-27 19:13:02,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:13:02,334 INFO L225 Difference]: With dead ends: 86524 [2020-10-27 19:13:02,334 INFO L226 Difference]: Without dead ends: 52458 [2020-10-27 19:13:02,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:13:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52458 states. [2020-10-27 19:13:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52458 to 51048. [2020-10-27 19:13:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51048 states. [2020-10-27 19:13:03,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51048 states to 51048 states and 65948 transitions. [2020-10-27 19:13:03,772 INFO L78 Accepts]: Start accepts. Automaton has 51048 states and 65948 transitions. Word has length 413 [2020-10-27 19:13:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:13:03,773 INFO L481 AbstractCegarLoop]: Abstraction has 51048 states and 65948 transitions. [2020-10-27 19:13:03,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:13:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 51048 states and 65948 transitions. [2020-10-27 19:13:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-10-27 19:13:04,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:04,154 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:13:04,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:13:04,155 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:04,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1944538616, now seen corresponding path program 1 times [2020-10-27 19:13:04,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:04,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192288164] [2020-10-27 19:13:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:07,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:09,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:09,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 667 [2020-10-27 19:13:09,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:13:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 19:13:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:13:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-27 19:13:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 477 [2020-10-27 19:13:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:13:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:09,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:09,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:13:09,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:13:09,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:09,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:13:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:09,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:09,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 19:13:09,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:13:09,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:09,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 19:13:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:09,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:09,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 19:13:09,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:09,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 19:13:09,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:09,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 19:13:09,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:09,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-27 19:13:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:10,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:10,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-27 19:13:10,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-27 19:13:10,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:13:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:13:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 478 [2020-10-27 19:13:10,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:13:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:11,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:11,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 19:13:11,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:11,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-27 19:13:11,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:13:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:13:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 19:13:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 19:13:12,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192288164] [2020-10-27 19:13:12,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:13:12,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 19:13:12,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501100994] [2020-10-27 19:13:12,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:13:12,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:13:12,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:13:12,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:13:12,511 INFO L87 Difference]: Start difference. First operand 51048 states and 65948 transitions. Second operand 9 states. [2020-10-27 19:13:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:13:27,146 INFO L93 Difference]: Finished difference Result 105173 states and 136593 transitions. [2020-10-27 19:13:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 19:13:27,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 649 [2020-10-27 19:13:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:13:27,295 INFO L225 Difference]: With dead ends: 105173 [2020-10-27 19:13:27,295 INFO L226 Difference]: Without dead ends: 51274 [2020-10-27 19:13:27,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-27 19:13:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51274 states. [2020-10-27 19:13:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51274 to 44204. [2020-10-27 19:13:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44204 states. [2020-10-27 19:13:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44204 states to 44204 states and 50073 transitions. [2020-10-27 19:13:28,268 INFO L78 Accepts]: Start accepts. Automaton has 44204 states and 50073 transitions. Word has length 649 [2020-10-27 19:13:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:13:28,269 INFO L481 AbstractCegarLoop]: Abstraction has 44204 states and 50073 transitions. [2020-10-27 19:13:28,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:13:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 44204 states and 50073 transitions. [2020-10-27 19:13:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2020-10-27 19:13:28,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:28,344 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:13:28,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:13:28,344 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:28,345 INFO L82 PathProgramCache]: Analyzing trace with hash -36630488, now seen corresponding path program 1 times [2020-10-27 19:13:28,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:28,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078238118] [2020-10-27 19:13:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:29,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:33,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:33,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 683 [2020-10-27 19:13:33,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:13:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 19:13:33,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:13:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 19:13:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 575 [2020-10-27 19:13:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:33,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:13:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:33,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:33,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:13:33,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:13:33,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:33,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:33,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:13:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:33,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:33,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 19:13:33,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:33,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 19:13:33,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 19:13:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:33,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 19:13:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:33,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:33,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 19:13:33,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 19:13:33,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:13:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:13:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 19:13:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:34,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 19:13:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:35,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:35,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-27 19:13:35,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-27 19:13:35,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:13:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:13:35,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 478 [2020-10-27 19:13:35,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:13:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:35,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:35,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 19:13:35,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 19:13:35,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:13:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:13:35,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 19:13:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 184 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 19:13:36,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078238118] [2020-10-27 19:13:36,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:13:36,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 19:13:36,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378283941] [2020-10-27 19:13:36,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 19:13:36,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:13:36,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 19:13:36,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:13:36,181 INFO L87 Difference]: Start difference. First operand 44204 states and 50073 transitions. Second operand 10 states. [2020-10-27 19:14:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:14:02,828 INFO L93 Difference]: Finished difference Result 136497 states and 166381 transitions. [2020-10-27 19:14:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 19:14:02,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 665 [2020-10-27 19:14:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:14:03,210 INFO L225 Difference]: With dead ends: 136497 [2020-10-27 19:14:03,211 INFO L226 Difference]: Without dead ends: 92299 [2020-10-27 19:14:03,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-27 19:14:03,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92299 states. [2020-10-27 19:14:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92299 to 87075. [2020-10-27 19:14:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87075 states. [2020-10-27 19:14:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87075 states to 87075 states and 100331 transitions. [2020-10-27 19:14:05,918 INFO L78 Accepts]: Start accepts. Automaton has 87075 states and 100331 transitions. Word has length 665 [2020-10-27 19:14:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:14:05,921 INFO L481 AbstractCegarLoop]: Abstraction has 87075 states and 100331 transitions. [2020-10-27 19:14:05,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 19:14:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 87075 states and 100331 transitions. [2020-10-27 19:14:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2020-10-27 19:14:06,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:14:06,165 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:14:06,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:14:06,165 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:14:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:14:06,166 INFO L82 PathProgramCache]: Analyzing trace with hash -98829322, now seen corresponding path program 1 times [2020-10-27 19:14:06,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:14:06,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107725025] [2020-10-27 19:14:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:14:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:06,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:10,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-27 19:14:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:14:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4485 [2020-10-27 19:14:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:14:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 19:14:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 19:14:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:14:10,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:14:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:10,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:10,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:14:10,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:14:10,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:14:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:14:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:10,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:14:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:11,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:11,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 19:14:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 19:14:11,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:14:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 19:14:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:11,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 19:14:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 19:14:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 19:14:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:14:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:14:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 19:14:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:11,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-27 19:14:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:11,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:11,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:11,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-27 19:14:11,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:11,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 19:14:11,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:14:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 475 [2020-10-27 19:14:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:14:11,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:11,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:14:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:14:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:14:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:14:11,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 19:14:11,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:14:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 19:14:11,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:14:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:14:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:14:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:14:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:14:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 111 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-27 19:14:12,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107725025] [2020-10-27 19:14:12,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:14:12,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:14:12,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104154705] [2020-10-27 19:14:12,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:14:12,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:14:12,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:14:12,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:14:12,306 INFO L87 Difference]: Start difference. First operand 87075 states and 100331 transitions. Second operand 8 states. [2020-10-27 19:14:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:14:23,853 INFO L93 Difference]: Finished difference Result 172832 states and 199956 transitions. [2020-10-27 19:14:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:14:23,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 698 [2020-10-27 19:14:23,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:14:24,372 INFO L225 Difference]: With dead ends: 172832 [2020-10-27 19:14:24,373 INFO L226 Difference]: Without dead ends: 85763 [2020-10-27 19:14:24,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:14:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85763 states. [2020-10-27 19:14:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85763 to 83594. [2020-10-27 19:14:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83594 states. [2020-10-27 19:14:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83594 states to 83594 states and 94403 transitions. [2020-10-27 19:14:26,572 INFO L78 Accepts]: Start accepts. Automaton has 83594 states and 94403 transitions. Word has length 698 [2020-10-27 19:14:26,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:14:26,573 INFO L481 AbstractCegarLoop]: Abstraction has 83594 states and 94403 transitions. [2020-10-27 19:14:26,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:14:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 83594 states and 94403 transitions.