/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 10:44:42,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 10:44:42,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 10:44:42,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 10:44:42,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 10:44:42,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 10:44:42,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 10:44:42,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 10:44:42,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 10:44:42,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 10:44:42,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 10:44:42,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 10:44:42,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 10:44:42,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 10:44:42,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 10:44:42,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 10:44:42,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 10:44:42,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 10:44:42,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 10:44:42,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 10:44:42,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 10:44:42,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 10:44:42,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 10:44:42,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 10:44:42,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 10:44:42,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 10:44:42,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 10:44:42,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 10:44:42,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 10:44:42,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 10:44:42,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 10:44:42,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 10:44:42,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 10:44:42,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-10-27 10:44:42,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 10:44:42,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 10:44:42,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 10:44:42,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 10:44:42,265 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 10:44:42,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 10:44:42,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 10:44:42,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 10:44:42,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 10:44:42,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 10:44:42,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 10:44:42,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 10:44:42,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 10:44:42,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 10:44:42,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 10:44:42,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 10:44:42,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 10:44:42,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 10:44:42,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 10:44:42,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 10:44:42,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 10:44:42,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 10:44:42,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 10:44:42,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 10:44:42,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 10:44:42,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 10:44:42,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-27 10:44:42,271 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 10:44:42,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 10:44:42,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 10:44:42,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 10:44:42,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 10:44:42,777 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 10:44:42,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2020-10-27 10:44:42,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1fcc5396/fa2ccc5f6ff94a66bd34d18e233600e2/FLAGc8c0893f9 [2020-10-27 10:44:43,774 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 10:44:43,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2020-10-27 10:44:43,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1fcc5396/fa2ccc5f6ff94a66bd34d18e233600e2/FLAGc8c0893f9 [2020-10-27 10:44:43,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1fcc5396/fa2ccc5f6ff94a66bd34d18e233600e2 [2020-10-27 10:44:43,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 10:44:43,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 10:44:43,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 10:44:43,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 10:44:43,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 10:44:43,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:44:43" (1/1) ... [2020-10-27 10:44:43,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123628d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:43, skipping insertion in model container [2020-10-27 10:44:43,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:44:43" (1/1) ... [2020-10-27 10:44:43,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 10:44:44,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 10:44:44,425 WARN L1207 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1764] [2020-10-27 10:44:44,426 WARN L1207 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1765-1766] [2020-10-27 10:44:44,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 10:44:44,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 10:44:45,045 WARN L1207 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1764] [2020-10-27 10:44:45,046 WARN L1207 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1765-1766] [2020-10-27 10:44:45,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 10:44:45,228 INFO L208 MainTranslator]: Completed translation [2020-10-27 10:44:45,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45 WrapperNode [2020-10-27 10:44:45,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 10:44:45,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 10:44:45,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 10:44:45,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 10:44:45,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (1/1) ... [2020-10-27 10:44:45,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (1/1) ... [2020-10-27 10:44:45,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (1/1) ... [2020-10-27 10:44:45,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (1/1) ... [2020-10-27 10:44:45,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (1/1) ... [2020-10-27 10:44:45,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (1/1) ... [2020-10-27 10:44:45,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (1/1) ... [2020-10-27 10:44:45,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 10:44:45,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 10:44:45,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 10:44:45,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 10:44:45,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (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 10:44:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 10:44:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 10:44:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~int [2020-10-27 10:44:45,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-27 10:44:45,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2020-10-27 10:44:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 10:44:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2020-10-27 10:44:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_weight [2020-10-27 10:44:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2020-10-27 10:44:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-10-27 10:44:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2020-10-27 10:44:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_1 [2020-10-27 10:44:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_5 [2020-10-27 10:44:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_8 [2020-10-27 10:44:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-27 10:44:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kmalloc_12 [2020-10-27 10:44:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 10:44:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-27 10:44:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-27 10:44:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-27 10:44:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-27 10:44:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-27 10:44:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-27 10:44:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-10-27 10:44:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-10-27 10:44:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_lock [2020-10-27 10:44:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_delay [2020-10-27 10:44:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_unlock [2020-10-27 10:44:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_lock [2020-10-27 10:44:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_delay [2020-10-27 10:44:45,505 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_unlock [2020-10-27 10:44:45,505 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_lock_irq [2020-10-27 10:44:45,505 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_spin_write_unlock_irq [2020-10-27 10:44:45,506 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_writer [2020-10-27 10:44:45,506 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_printk [2020-10-27 10:44:45,506 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_stats_print [2020-10-27 10:44:45,506 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_stats [2020-10-27 10:44:45,506 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_print_module_parms [2020-10-27 10:44:45,507 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_cleanup [2020-10-27 10:44:45,507 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_init [2020-10-27 10:44:45,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 10:44:45,507 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2020-10-27 10:44:45,507 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2020-10-27 10:44:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2020-10-27 10:44:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-27 10:44:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-27 10:44:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-10-27 10:44:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-10-27 10:44:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-10-27 10:44:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-10-27 10:44:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-10-27 10:44:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-10-27 10:44:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitmap_weight [2020-10-27 10:44:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-10-27 10:44:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2020-10-27 10:44:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2020-10-27 10:44:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2020-10-27 10:44:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2020-10-27 10:44:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure _torture_create_kthread [2020-10-27 10:44:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure _torture_stop_kthread [2020-10-27 10:44:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-10-27 10:44:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-27 10:44:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-27 10:44:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2020-10-27 10:44:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_2 [2020-10-27 10:44:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2020-10-27 10:44:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-10-27 10:44:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-10-27 10:44:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_3 [2020-10-27 10:44:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-10-27 10:44:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-27 10:44:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2020-10-27 10:44:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2020-10-27 10:44:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure set_user_nice [2020-10-27 10:44:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure stutter_wait [2020-10-27 10:44:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_cleanup [2020-10-27 10:44:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_init_begin [2020-10-27 10:44:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_init_end [2020-10-27 10:44:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_kthread_stopping [2020-10-27 10:44:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_must_stop [2020-10-27 10:44:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_onoff_failures [2020-10-27 10:44:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_onoff_init [2020-10-27 10:44:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_random [2020-10-27 10:44:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_shuffle_init [2020-10-27 10:44:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_shutdown_absorb [2020-10-27 10:44:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_shutdown_init [2020-10-27 10:44:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_stutter_init [2020-10-27 10:44:45,518 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-10-27 10:44:45,519 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-27 10:44:45,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-27 10:44:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 10:44:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 10:44:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 10:44:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 10:44:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 10:44:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 10:44:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-10-27 10:44:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-10-27 10:44:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-10-27 10:44:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-27 10:44:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-27 10:44:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-10-27 10:44:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-10-27 10:44:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2020-10-27 10:44:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-27 10:44:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure __bitmap_weight [2020-10-27 10:44:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_weight [2020-10-27 10:44:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2020-10-27 10:44:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-10-27 10:44:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 10:44:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2020-10-27 10:44:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2020-10-27 10:44:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2020-10-27 10:44:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2020-10-27 10:44:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_1 [2020-10-27 10:44:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2020-10-27 10:44:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_5 [2020-10-27 10:44:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2020-10-27 10:44:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_8 [2020-10-27 10:44:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2020-10-27 10:44:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-27 10:44:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-27 10:44:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-27 10:44:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-10-27 10:44:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kmalloc_12 [2020-10-27 10:44:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-27 10:44:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-27 10:44:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-10-27 10:44:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 10:44:45,529 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 10:44:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 10:44:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-27 10:44:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 10:44:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 10:44:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-27 10:44:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-27 10:44:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-27 10:44:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-27 10:44:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-27 10:44:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-27 10:44:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-10-27 10:44:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2020-10-27 10:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2020-10-27 10:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure set_user_nice [2020-10-27 10:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2020-10-27 10:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-10-27 10:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure torture_onoff_init [2020-10-27 10:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure torture_onoff_failures [2020-10-27 10:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure torture_random [2020-10-27 10:44:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure torture_shuffle_init [2020-10-27 10:44:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure torture_shutdown_absorb [2020-10-27 10:44:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure torture_shutdown_init [2020-10-27 10:44:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure stutter_wait [2020-10-27 10:44:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure torture_stutter_init [2020-10-27 10:44:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure torture_init_begin [2020-10-27 10:44:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure torture_init_end [2020-10-27 10:44:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure torture_cleanup [2020-10-27 10:44:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure torture_must_stop [2020-10-27 10:44:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure torture_kthread_stopping [2020-10-27 10:44:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure _torture_create_kthread [2020-10-27 10:44:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure _torture_stop_kthread [2020-10-27 10:44:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_cleanup [2020-10-27 10:44:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_lock [2020-10-27 10:44:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_delay [2020-10-27 10:44:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_unlock [2020-10-27 10:44:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_lock [2020-10-27 10:44:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_delay [2020-10-27 10:44:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_unlock [2020-10-27 10:44:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_lock_irq [2020-10-27 10:44:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 10:44:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_spin_write_unlock_irq [2020-10-27 10:44:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_writer [2020-10-27 10:44:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~int [2020-10-27 10:44:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-27 10:44:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2020-10-27 10:44:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 10:44:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 10:44:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_printk [2020-10-27 10:44:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_stats_print [2020-10-27 10:44:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_stats [2020-10-27 10:44:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_print_module_parms [2020-10-27 10:44:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_init [2020-10-27 10:44:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 10:44:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2020-10-27 10:44:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-27 10:44:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-10-27 10:44:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-27 10:44:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_3 [2020-10-27 10:44:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2020-10-27 10:44:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_2 [2020-10-27 10:44:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-10-27 10:44:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 10:44:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-10-27 10:44:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-10-27 10:44:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-10-27 10:44:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-10-27 10:44:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-27 10:44:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 10:44:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 10:44:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 10:44:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 10:44:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 10:44:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 10:44:46,311 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-27 10:44:59,977 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 10:44:59,977 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 10:44:59,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:44:59 BoogieIcfgContainer [2020-10-27 10:44:59,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 10:44:59,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 10:44:59,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 10:44:59,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 10:44:59,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:44:43" (1/3) ... [2020-10-27 10:44:59,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe0bd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:44:59, skipping insertion in model container [2020-10-27 10:44:59,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:44:45" (2/3) ... [2020-10-27 10:44:59,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe0bd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:44:59, skipping insertion in model container [2020-10-27 10:44:59,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:44:59" (3/3) ... [2020-10-27 10:44:59,994 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2020-10-27 10:45:00,008 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 10:45:00,015 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 10:45:00,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 10:45:00,082 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 10:45:00,083 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 10:45:00,083 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 10:45:00,083 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 10:45:00,083 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 10:45:00,083 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 10:45:00,083 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 10:45:00,083 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 10:45:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states. [2020-10-27 10:45:00,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 10:45:00,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 10:45:00,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 10:45:00,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 10:45:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 10:45:00,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1028992447, now seen corresponding path program 1 times [2020-10-27 10:45:00,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 10:45:00,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090782345] [2020-10-27 10:45:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 10:45:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:03,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:03,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 10:45:03,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 10:45:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3204 [2020-10-27 10:45:03,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:03,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 10:45:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:45:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 10:45:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 10:45:05,391 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 10:45:05,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 10:45:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:05,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:05,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:45:05,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 10:45:05,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 10:45:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:05,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 10:45:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:05,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:05,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:45:05,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 10:45:05,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 10:45:05,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 10:45:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:05,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:05,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:45:05,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 10:45:05,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 10:45:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:05,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 10:45:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:05,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:05,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:05,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:45:05,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 10:45:05,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 10:45:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:05,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 10:45:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:05,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:05,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 10:45:05,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:05,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:45:05,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 10:45:05,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 10:45:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:05,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:05,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:45:05,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 10:45:05,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 10:45:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:05,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 10:45:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:05,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:05,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:45:05,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 10:45:05,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 10:45:05,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 10:45:05,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090782345] [2020-10-27 10:45:05,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 10:45:05,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 10:45:05,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193274109] [2020-10-27 10:45:05,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 10:45:05,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 10:45:05,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 10:45:05,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 10:45:05,902 INFO L87 Difference]: Start difference. First operand 583 states. Second operand 5 states. [2020-10-27 10:45:07,143 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 10:45:08,652 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 10:45:09,922 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 10:45:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 10:45:35,437 INFO L93 Difference]: Finished difference Result 1648 states and 2300 transitions. [2020-10-27 10:45:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 10:45:35,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-27 10:45:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 10:45:35,471 INFO L225 Difference]: With dead ends: 1648 [2020-10-27 10:45:35,471 INFO L226 Difference]: Without dead ends: 1123 [2020-10-27 10:45:35,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 10:45:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-10-27 10:45:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 837. [2020-10-27 10:45:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-10-27 10:45:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1088 transitions. [2020-10-27 10:45:35,840 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1088 transitions. Word has length 58 [2020-10-27 10:45:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 10:45:35,841 INFO L481 AbstractCegarLoop]: Abstraction has 837 states and 1088 transitions. [2020-10-27 10:45:35,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 10:45:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1088 transitions. [2020-10-27 10:45:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 10:45:35,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 10:45:35,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 10:45:35,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 10:45:35,852 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 10:45:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 10:45:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash -364545099, now seen corresponding path program 1 times [2020-10-27 10:45:35,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 10:45:35,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681143357] [2020-10-27 10:45:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 10:45:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:36,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:37,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:37,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 10:45:37,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 10:45:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-27 10:45:37,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 10:45:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 10:45:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,550 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 10:45:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 10:45:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:45:38,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 10:45:38,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:45:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:45:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 10:45:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 10:45:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:45:38,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 10:45:38,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:45:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:45:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 10:45:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:45:38,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 10:45:38,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:45:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:45:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 10:45:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:45:38,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:45:38,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:45:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:45:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 10:45:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 10:45:38,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:45:38,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:45:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:45:38,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 10:45:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 10:45:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 10:45:38,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:45:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 10:45:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:45:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:45:38,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:45:38,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:45:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:45:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:45:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 10:45:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:45:38,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:45:38,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:45:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:45:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:45:38,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 10:45:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:45:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:45:38,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:45:38,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:45:38,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:45:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:45:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:45:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:45:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:45:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:45:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:45:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 10:45:38,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681143357] [2020-10-27 10:45:38,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 10:45:38,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 10:45:38,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545465577] [2020-10-27 10:45:38,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 10:45:38,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 10:45:38,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 10:45:38,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 10:45:38,903 INFO L87 Difference]: Start difference. First operand 837 states and 1088 transitions. Second operand 7 states. [2020-10-27 10:45:40,116 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 10:45:44,554 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-27 10:45:45,859 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 10:46:10,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 10:46:10,625 INFO L93 Difference]: Finished difference Result 2054 states and 2931 transitions. [2020-10-27 10:46:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 10:46:10,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-10-27 10:46:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 10:46:10,660 INFO L225 Difference]: With dead ends: 2054 [2020-10-27 10:46:10,660 INFO L226 Difference]: Without dead ends: 1848 [2020-10-27 10:46:10,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 10:46:10,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-10-27 10:46:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1248. [2020-10-27 10:46:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-10-27 10:46:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1663 transitions. [2020-10-27 10:46:11,106 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1663 transitions. Word has length 73 [2020-10-27 10:46:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 10:46:11,108 INFO L481 AbstractCegarLoop]: Abstraction has 1248 states and 1663 transitions. [2020-10-27 10:46:11,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 10:46:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1663 transitions. [2020-10-27 10:46:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 10:46:11,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 10:46:11,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 10:46:11,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 10:46:11,119 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 10:46:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 10:46:11,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1171022240, now seen corresponding path program 1 times [2020-10-27 10:46:11,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 10:46:11,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951622959] [2020-10-27 10:46:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 10:46:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:11,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:14,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:14,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 10:46:14,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 10:46:14,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3097 [2020-10-27 10:46:14,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:46:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 10:46:14,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:15,620 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 10:46:15,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 10:46:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:15,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:15,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:15,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:15,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-27 10:46:15,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 10:46:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:15,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 10:46:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:15,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:15,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:46:15,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:15,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 10:46:15,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:15,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:15,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:15,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 10:46:15,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:15,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 10:46:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:15,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:15,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:46:15,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 10:46:15,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 10:46:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 10:46:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:15,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:15,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:46:15,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 10:46:15,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 10:46:15,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:15,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 10:46:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:15,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:15,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:15,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 10:46:15,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:46:15,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 10:46:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 10:46:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:16,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:16,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 10:46:16,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 10:46:16,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 10:46:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:46:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:16,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:16,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:16,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:46:16,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 10:46:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:16,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:16,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:16,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 10:46:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 10:46:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 10:46:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:16,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:16,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:16,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:16,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:46:16,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:16,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:46:16,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 10:46:16,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951622959] [2020-10-27 10:46:16,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 10:46:16,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 10:46:16,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916711100] [2020-10-27 10:46:16,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 10:46:16,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 10:46:16,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 10:46:16,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 10:46:16,129 INFO L87 Difference]: Start difference. First operand 1248 states and 1663 transitions. Second operand 7 states. [2020-10-27 10:46:17,406 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 10:46:19,488 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 422 [2020-10-27 10:46:20,868 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 413 [2020-10-27 10:46:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 10:46:41,506 INFO L93 Difference]: Finished difference Result 3054 states and 4301 transitions. [2020-10-27 10:46:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 10:46:41,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 10:46:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 10:46:41,520 INFO L225 Difference]: With dead ends: 3054 [2020-10-27 10:46:41,520 INFO L226 Difference]: Without dead ends: 1833 [2020-10-27 10:46:41,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 10:46:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2020-10-27 10:46:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1244. [2020-10-27 10:46:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2020-10-27 10:46:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1650 transitions. [2020-10-27 10:46:41,814 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1650 transitions. Word has length 77 [2020-10-27 10:46:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 10:46:41,815 INFO L481 AbstractCegarLoop]: Abstraction has 1244 states and 1650 transitions. [2020-10-27 10:46:41,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 10:46:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1650 transitions. [2020-10-27 10:46:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 10:46:41,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 10:46:41,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 10:46:41,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 10:46:41,820 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 10:46:41,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 10:46:41,820 INFO L82 PathProgramCache]: Analyzing trace with hash 876311269, now seen corresponding path program 1 times [2020-10-27 10:46:41,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 10:46:41,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077047526] [2020-10-27 10:46:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 10:46:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:41,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:42,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:44,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:44,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 10:46:44,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 10:46:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-10-27 10:46:44,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:46:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 10:46:44,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 10:46:44,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:45,253 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 10:46:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 10:46:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:45,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 10:46:45,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 10:46:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:46:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:46:45,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 10:46:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:46:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:46:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 10:46:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 10:46:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:46:45,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:46:45,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:45,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:45,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 10:46:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 10:46:45,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:46:45,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 10:46:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 10:46:45,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 10:46:45,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 10:46:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 10:46:45,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:46:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:45,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:46:45,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:46:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:46:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 10:46:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:45,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 10:46:45,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:46:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 10:46:45,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 10:46:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:45,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:46:45,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:46:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 10:46:45,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 10:46:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:46:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:46:45,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:46:45,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:46:45,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:46:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:46:45,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:46:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:46:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:46:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:46:45,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 10:46:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 10:46:45,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077047526] [2020-10-27 10:46:45,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 10:46:45,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 10:46:45,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565460210] [2020-10-27 10:46:45,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 10:46:45,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 10:46:45,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 10:46:45,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 10:46:45,581 INFO L87 Difference]: Start difference. First operand 1244 states and 1650 transitions. Second operand 7 states. [2020-10-27 10:46:46,828 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 10:46:48,443 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-27 10:46:49,767 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 10:47:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 10:47:11,812 INFO L93 Difference]: Finished difference Result 4320 states and 6062 transitions. [2020-10-27 10:47:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 10:47:11,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-27 10:47:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 10:47:11,833 INFO L225 Difference]: With dead ends: 4320 [2020-10-27 10:47:11,833 INFO L226 Difference]: Without dead ends: 3103 [2020-10-27 10:47:11,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 10:47:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2020-10-27 10:47:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 2291. [2020-10-27 10:47:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-10-27 10:47:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3045 transitions. [2020-10-27 10:47:12,480 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3045 transitions. Word has length 88 [2020-10-27 10:47:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 10:47:12,480 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 3045 transitions. [2020-10-27 10:47:12,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 10:47:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3045 transitions. [2020-10-27 10:47:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 10:47:12,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 10:47:12,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 10:47:12,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 10:47:12,489 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 10:47:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 10:47:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1372436140, now seen corresponding path program 1 times [2020-10-27 10:47:12,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 10:47:12,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999857253] [2020-10-27 10:47:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 10:47:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:16,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:16,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 10:47:16,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 10:47:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4251 [2020-10-27 10:47:16,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:47:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 10:47:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 10:47:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,002 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 10:47:18,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 10:47:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:18,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 10:47:18,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 10:47:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:47:18,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:47:18,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 10:47:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:47:18,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 10:47:18,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 10:47:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:47:18,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 10:47:18,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 10:47:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 10:47:18,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:47:18,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:18,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 10:47:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 10:47:18,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 10:47:18,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:47:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 10:47:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 10:47:18,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:47:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:18,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:47:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 10:47:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 10:47:18,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 10:47:18,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 10:47:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:47:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:18,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:47:18,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 10:47:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:18,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:47:18,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:47:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 10:47:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:18,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:18,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:18,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:18,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:47:18,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:18,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:47:18,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:18,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 10:47:18,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999857253] [2020-10-27 10:47:18,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 10:47:18,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 10:47:18,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484880417] [2020-10-27 10:47:18,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 10:47:18,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 10:47:18,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 10:47:18,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 10:47:18,393 INFO L87 Difference]: Start difference. First operand 2291 states and 3045 transitions. Second operand 8 states. [2020-10-27 10:47:19,617 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 10:47:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 10:47:36,639 INFO L93 Difference]: Finished difference Result 5337 states and 7376 transitions. [2020-10-27 10:47:36,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 10:47:36,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-10-27 10:47:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 10:47:36,665 INFO L225 Difference]: With dead ends: 5337 [2020-10-27 10:47:36,665 INFO L226 Difference]: Without dead ends: 3073 [2020-10-27 10:47:36,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 10:47:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2020-10-27 10:47:37,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2295. [2020-10-27 10:47:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-10-27 10:47:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3049 transitions. [2020-10-27 10:47:37,374 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3049 transitions. Word has length 94 [2020-10-27 10:47:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 10:47:37,374 INFO L481 AbstractCegarLoop]: Abstraction has 2295 states and 3049 transitions. [2020-10-27 10:47:37,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 10:47:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3049 transitions. [2020-10-27 10:47:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 10:47:37,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 10:47:37,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 10:47:37,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 10:47:37,383 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 10:47:37,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 10:47:37,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1384191126, now seen corresponding path program 1 times [2020-10-27 10:47:37,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 10:47:37,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871914133] [2020-10-27 10:47:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 10:47:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:37,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:39,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:39,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 10:47:39,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 10:47:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-27 10:47:39,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:39,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 10:47:39,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 10:47:39,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 10:47:39,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,257 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 10:47:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 10:47:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:41,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 10:47:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 10:47:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:47:41,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:47:41,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:41,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 10:47:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:47:41,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:47:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 10:47:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:47:41,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:47:41,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 10:47:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 10:47:41,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:47:41,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 10:47:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 10:47:41,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 10:47:41,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 10:47:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:41,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 10:47:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:47:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:41,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:47:41,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 10:47:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 10:47:41,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 10:47:41,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 10:47:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:47:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:41,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:47:41,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:47:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 10:47:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:47:41,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:47:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 10:47:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:47:41,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:47:41,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:47:41,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:47:41,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:47:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:47:41,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:47:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:47:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:47:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:47:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:47:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 10:47:41,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871914133] [2020-10-27 10:47:41,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 10:47:41,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 10:47:41,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478548179] [2020-10-27 10:47:41,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 10:47:41,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 10:47:41,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 10:47:41,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 10:47:41,671 INFO L87 Difference]: Start difference. First operand 2295 states and 3049 transitions. Second operand 10 states. [2020-10-27 10:47:42,967 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 10:48:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 10:48:03,741 INFO L93 Difference]: Finished difference Result 5361 states and 7391 transitions. [2020-10-27 10:48:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 10:48:03,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-27 10:48:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 10:48:03,762 INFO L225 Difference]: With dead ends: 5361 [2020-10-27 10:48:03,762 INFO L226 Difference]: Without dead ends: 3067 [2020-10-27 10:48:03,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-27 10:48:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2020-10-27 10:48:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 2291. [2020-10-27 10:48:04,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-10-27 10:48:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3041 transitions. [2020-10-27 10:48:04,323 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3041 transitions. Word has length 94 [2020-10-27 10:48:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 10:48:04,323 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 3041 transitions. [2020-10-27 10:48:04,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 10:48:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3041 transitions. [2020-10-27 10:48:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 10:48:04,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 10:48:04,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:04,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 10:48:04,332 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 10:48:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 10:48:04,333 INFO L82 PathProgramCache]: Analyzing trace with hash -4474175, now seen corresponding path program 1 times [2020-10-27 10:48:04,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 10:48:04,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45916190] [2020-10-27 10:48:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 10:48:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:05,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:05,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 10:48:05,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 10:48:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-27 10:48:05,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 10:48:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 10:48:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 10:48:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,108 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 10:48:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 10:48:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:48:07,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 10:48:07,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 10:48:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:48:07,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:48:07,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 10:48:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:48:07,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:48:07,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 10:48:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 10:48:07,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:48:07,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 10:48:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 10:48:07,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:48:07,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 10:48:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 10:48:07,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 10:48:07,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 10:48:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 10:48:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 10:48:07,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 10:48:07,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:48:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:48:07,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:48:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 10:48:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 10:48:07,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:48:07,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 10:48:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:48:07,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:48:07,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 10:48:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 10:48:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 10:48:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:48:07,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:48:07,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:48:07,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 10:48:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:48:07,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 10:48:07,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:48:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 10:48:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 10:48:07,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 10:48:07,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 10:48:07,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 10:48:07,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 10:48:07,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 10:48:07,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 10:48:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 10:48:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 10:48:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 10:48:07,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 10:48:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 10:48:07,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45916190] [2020-10-27 10:48:07,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 10:48:07,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 10:48:07,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042682816] [2020-10-27 10:48:07,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 10:48:07,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 10:48:07,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 10:48:07,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 10:48:07,506 INFO L87 Difference]: Start difference. First operand 2291 states and 3041 transitions. Second operand 6 states. [2020-10-27 10:48:08,679 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 10:48:10,311 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 10:48:11,791 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 10:48:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 10:48:32,605 INFO L93 Difference]: Finished difference Result 7586 states and 10472 transitions. [2020-10-27 10:48:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 10:48:32,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-27 10:48:32,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 10:48:32,634 INFO L225 Difference]: With dead ends: 7586 [2020-10-27 10:48:32,634 INFO L226 Difference]: Without dead ends: 5322 [2020-10-27 10:48:32,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-27 10:48:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states.