/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 06:51:42,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 06:51:42,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 06:51:42,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 06:51:42,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 06:51:42,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 06:51:42,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 06:51:42,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 06:51:42,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 06:51:42,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 06:51:42,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 06:51:42,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 06:51:42,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 06:51:42,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 06:51:42,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 06:51:42,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 06:51:42,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 06:51:42,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 06:51:42,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 06:51:42,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 06:51:42,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 06:51:42,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 06:51:42,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 06:51:42,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 06:51:42,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 06:51:42,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 06:51:42,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 06:51:42,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 06:51:42,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 06:51:42,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 06:51:42,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 06:51:42,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 06:51:42,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 06:51:42,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 06:51:42,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 06:51:42,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 06:51:42,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 06:51:42,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 06:51:42,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 06:51:42,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 06:51:42,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 06:51:42,340 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 [2020-10-28 06:51:42,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 06:51:42,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 06:51:42,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 06:51:42,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 06:51:42,371 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 06:51:42,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 06:51:42,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 06:51:42,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 06:51:42,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 06:51:42,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 06:51:42,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 06:51:42,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 06:51:42,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 06:51:42,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 06:51:42,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 06:51:42,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 06:51:42,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 06:51:42,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 06:51:42,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 06:51:42,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 06:51:42,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 06:51:42,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 06:51:42,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 06:51:42,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 06:51:42,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 06:51:42,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 06:51:42,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-28 06:51:42,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 06:51:42,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 06:51:42,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 06:51:42,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 06:51:42,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 06:51:42,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 06:51:42,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-10-28 06:51:42,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddc449e03/ff3f8f91f19e43d8b3e09be22b91a9fc/FLAG7ab1b2509 [2020-10-28 06:51:43,838 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 06:51:43,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-10-28 06:51:43,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddc449e03/ff3f8f91f19e43d8b3e09be22b91a9fc/FLAG7ab1b2509 [2020-10-28 06:51:44,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddc449e03/ff3f8f91f19e43d8b3e09be22b91a9fc [2020-10-28 06:51:44,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 06:51:44,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 06:51:44,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 06:51:44,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 06:51:44,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 06:51:44,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:51:44" (1/1) ... [2020-10-28 06:51:44,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d29071d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:44, skipping insertion in model container [2020-10-28 06:51:44,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:51:44" (1/1) ... [2020-10-28 06:51:44,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 06:51:44,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 06:51:45,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 06:51:45,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 06:51:46,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 06:51:46,392 INFO L208 MainTranslator]: Completed translation [2020-10-28 06:51:46,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46 WrapperNode [2020-10-28 06:51:46,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 06:51:46,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 06:51:46,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 06:51:46,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 06:51:46,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (1/1) ... [2020-10-28 06:51:46,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (1/1) ... [2020-10-28 06:51:46,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (1/1) ... [2020-10-28 06:51:46,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (1/1) ... [2020-10-28 06:51:46,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (1/1) ... [2020-10-28 06:51:46,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (1/1) ... [2020-10-28 06:51:46,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (1/1) ... [2020-10-28 06:51:46,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 06:51:46,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 06:51:46,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 06:51:46,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 06:51:46,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (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 [2020-10-28 06:51:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 06:51:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 06:51:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 06:51:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-10-28 06:51:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-10-28 06:51:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-10-28 06:51:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-10-28 06:51:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-10-28 06:51:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-10-28 06:51:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-10-28 06:51:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-28 06:51:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-28 06:51:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-28 06:51:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 06:51:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-28 06:51:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-28 06:51:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-10-28 06:51:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-10-28 06:51:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-28 06:51:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-28 06:51:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-28 06:51:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-10-28 06:51:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-10-28 06:51:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-10-28 06:51:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-10-28 06:51:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-10-28 06:51:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-10-28 06:51:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-10-28 06:51:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-10-28 06:51:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-10-28 06:51:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-10-28 06:51:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-10-28 06:51:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-10-28 06:51:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-10-28 06:51:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-10-28 06:51:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-10-28 06:51:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-10-28 06:51:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-10-28 06:51:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-10-28 06:51:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 06:51:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-10-28 06:51:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-10-28 06:51:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-10-28 06:51:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-28 06:51:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-10-28 06:51:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-10-28 06:51:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-10-28 06:51:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-10-28 06:51:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-10-28 06:51:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-10-28 06:51:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-10-28 06:51:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-10-28 06:51:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-10-28 06:51:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-28 06:51:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-10-28 06:51:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-10-28 06:51:46,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-10-28 06:51:46,796 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-10-28 06:51:46,796 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-10-28 06:51:46,796 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-10-28 06:51:46,796 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-10-28 06:51:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-10-28 06:51:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-10-28 06:51:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-28 06:51:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-28 06:51:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-10-28 06:51:46,798 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-10-28 06:51:46,798 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-10-28 06:51:46,798 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-10-28 06:51:46,798 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-10-28 06:51:46,798 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-28 06:51:46,799 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-28 06:51:46,799 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 06:51:46,800 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-28 06:51:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 06:51:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 06:51:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 06:51:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 06:51:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 06:51:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 06:51:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-28 06:51:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-28 06:51:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-28 06:51:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-10-28 06:51:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-10-28 06:51:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-10-28 06:51:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-10-28 06:51:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-10-28 06:51:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-10-28 06:51:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-10-28 06:51:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-10-28 06:51:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-28 06:51:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-10-28 06:51:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-10-28 06:51:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-10-28 06:51:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-28 06:51:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-28 06:51:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-28 06:51:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-28 06:51:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-28 06:51:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-28 06:51:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 06:51:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 06:51:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 06:51:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-28 06:51:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 06:51:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 06:51:46,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 06:51:46,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-10-28 06:51:46,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-10-28 06:51:46,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-28 06:51:46,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-28 06:51:46,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-28 06:51:46,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-28 06:51:46,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-10-28 06:51:46,812 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-10-28 06:51:46,812 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-10-28 06:51:46,813 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-10-28 06:51:46,813 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-10-28 06:51:46,813 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-10-28 06:51:46,813 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-10-28 06:51:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-10-28 06:51:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-10-28 06:51:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-10-28 06:51:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-10-28 06:51:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-10-28 06:51:46,814 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-10-28 06:51:46,815 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-10-28 06:51:46,815 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-10-28 06:51:46,815 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-10-28 06:51:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-10-28 06:51:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-10-28 06:51:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-10-28 06:51:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-10-28 06:51:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-10-28 06:51:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-10-28 06:51:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-10-28 06:51:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-10-28 06:51:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-10-28 06:51:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-10-28 06:51:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-10-28 06:51:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-10-28 06:51:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 06:51:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 06:51:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 06:51:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 06:51:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 06:51:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-10-28 06:51:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-10-28 06:51:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-10-28 06:51:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-28 06:51:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-28 06:51:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 06:51:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-28 06:51:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-10-28 06:51:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-10-28 06:51:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-10-28 06:51:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-10-28 06:51:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-10-28 06:51:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-10-28 06:51:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-10-28 06:51:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-10-28 06:51:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-10-28 06:51:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 06:51:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 06:51:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 06:51:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 06:51:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-28 06:51:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-28 06:51:46,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-28 06:51:46,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-28 06:51:48,030 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-28 06:51:51,595 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-10-28 06:51:51,789 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 06:51:51,790 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 06:51:51,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:51:51 BoogieIcfgContainer [2020-10-28 06:51:51,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 06:51:51,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 06:51:51,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 06:51:51,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 06:51:51,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:51:44" (1/3) ... [2020-10-28 06:51:51,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6353ff55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:51:51, skipping insertion in model container [2020-10-28 06:51:51,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:51:46" (2/3) ... [2020-10-28 06:51:51,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6353ff55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:51:51, skipping insertion in model container [2020-10-28 06:51:51,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:51:51" (3/3) ... [2020-10-28 06:51:51,806 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-10-28 06:51:51,823 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 06:51:51,830 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 06:51:51,845 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 06:51:51,894 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 06:51:51,894 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 06:51:51,894 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 06:51:51,894 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 06:51:51,894 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 06:51:51,895 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 06:51:51,895 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 06:51:51,895 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 06:51:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-28 06:51:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 06:51:51,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:51:51,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 06:51:51,957 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:51:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:51:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash -509380558, now seen corresponding path program 1 times [2020-10-28 06:51:51,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:51:51,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21769659] [2020-10-28 06:51:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:51:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:51:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:51:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:51:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:51:54,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 06:51:54,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 06:51:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2426 [2020-10-28 06:51:54,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:51:54,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 06:51:54,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 06:51:54,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 06:51:54,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 06:51:56,846 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:51:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:51:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:51:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:51:57,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:51:57,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:51:57,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:51:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 06:51:57,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:51:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:51:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:51:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:51:57,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:51:57,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:51:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:51:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:51:57,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:51:57,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:51:57,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:51:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 06:51:57,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:51:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:51:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:51:57,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:51:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:51:57,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 06:51:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:51:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:51:57,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:51:57,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 06:51:57,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:51:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 06:51:57,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:51:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:51:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:51:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:51:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:51:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:51:57,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21769659] [2020-10-28 06:51:57,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 06:51:57,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 06:51:57,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355320759] [2020-10-28 06:51:57,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 06:51:57,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:51:57,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 06:51:57,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 06:51:57,220 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-28 06:52:00,122 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 528 [2020-10-28 06:52:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 06:52:12,437 INFO L93 Difference]: Finished difference Result 1410 states and 2063 transitions. [2020-10-28 06:52:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 06:52:12,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-28 06:52:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 06:52:12,463 INFO L225 Difference]: With dead ends: 1410 [2020-10-28 06:52:12,464 INFO L226 Difference]: Without dead ends: 856 [2020-10-28 06:52:12,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 06:52:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2020-10-28 06:52:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 592. [2020-10-28 06:52:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-28 06:52:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 816 transitions. [2020-10-28 06:52:12,833 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 816 transitions. Word has length 28 [2020-10-28 06:52:12,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 06:52:12,834 INFO L481 AbstractCegarLoop]: Abstraction has 592 states and 816 transitions. [2020-10-28 06:52:12,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 06:52:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 816 transitions. [2020-10-28 06:52:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 06:52:12,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:52:12,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 06:52:12,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 06:52:12,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:52:12,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:52:12,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1971444564, now seen corresponding path program 1 times [2020-10-28 06:52:12,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:52:12,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938898484] [2020-10-28 06:52:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:52:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:13,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:18,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 06:52:18,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 06:52:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 06:52:18,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:18,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 06:52:18,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 06:52:18,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 06:52:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 06:52:19,810 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:52:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:52:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:20,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:20,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:52:20,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:52:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-28 06:52:20,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:52:20,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:52:20,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:52:20,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:20,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:52:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:20,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:20,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:52:20,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:52:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 06:52:20,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:52:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:52:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:52:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:20,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 06:52:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:20,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:20,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:20,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 06:52:20,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 06:52:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 06:52:20,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 06:52:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 06:52:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 06:52:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 06:52:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:20,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:20,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 06:52:20,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 06:52:20,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 06:52:20,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:20,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 06:52:20,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:52:20,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 06:52:20,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:52:20,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938898484] [2020-10-28 06:52:20,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 06:52:20,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 06:52:20,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558911175] [2020-10-28 06:52:20,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 06:52:20,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:52:20,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 06:52:20,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 06:52:20,561 INFO L87 Difference]: Start difference. First operand 592 states and 816 transitions. Second operand 7 states. [2020-10-28 06:52:22,333 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 06:52:25,080 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 531 [2020-10-28 06:52:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 06:52:37,000 INFO L93 Difference]: Finished difference Result 1309 states and 1826 transitions. [2020-10-28 06:52:37,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 06:52:37,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-28 06:52:37,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 06:52:37,014 INFO L225 Difference]: With dead ends: 1309 [2020-10-28 06:52:37,015 INFO L226 Difference]: Without dead ends: 727 [2020-10-28 06:52:37,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 06:52:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-10-28 06:52:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 593. [2020-10-28 06:52:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-28 06:52:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 816 transitions. [2020-10-28 06:52:37,241 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 816 transitions. Word has length 40 [2020-10-28 06:52:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 06:52:37,241 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 816 transitions. [2020-10-28 06:52:37,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 06:52:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 816 transitions. [2020-10-28 06:52:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 06:52:37,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:52:37,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 06:52:37,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 06:52:37,247 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:52:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:52:37,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1759722836, now seen corresponding path program 1 times [2020-10-28 06:52:37,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:52:37,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092574114] [2020-10-28 06:52:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:52:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:39,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:39,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 06:52:39,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 06:52:39,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1709 [2020-10-28 06:52:39,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 06:52:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 06:52:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 06:52:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:41,073 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:52:41,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:52:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:41,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:41,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:52:41,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:52:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-28 06:52:41,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:52:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:52:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:52:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:52:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:52:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:52:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 06:52:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:52:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:52:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:52:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:41,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 06:52:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:41,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:41,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 06:52:41,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:52:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 06:52:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 06:52:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:52:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 06:52:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:41,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 06:52:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:52:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:52:41,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:52:41,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 06:52:41,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:52:41,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 06:52:41,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:52:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 06:52:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 06:52:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 06:52:41,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:52:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:52:41,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092574114] [2020-10-28 06:52:41,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 06:52:41,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 06:52:41,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738200701] [2020-10-28 06:52:41,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 06:52:41,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:52:41,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 06:52:41,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 06:52:41,863 INFO L87 Difference]: Start difference. First operand 593 states and 816 transitions. Second operand 6 states. [2020-10-28 06:52:43,766 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 06:53:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 06:53:03,415 INFO L93 Difference]: Finished difference Result 1305 states and 1821 transitions. [2020-10-28 06:53:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 06:53:03,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-28 06:53:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 06:53:03,423 INFO L225 Difference]: With dead ends: 1305 [2020-10-28 06:53:03,423 INFO L226 Difference]: Without dead ends: 722 [2020-10-28 06:53:03,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 06:53:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-10-28 06:53:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 595. [2020-10-28 06:53:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-28 06:53:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 818 transitions. [2020-10-28 06:53:03,589 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 818 transitions. Word has length 40 [2020-10-28 06:53:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 06:53:03,589 INFO L481 AbstractCegarLoop]: Abstraction has 595 states and 818 transitions. [2020-10-28 06:53:03,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 06:53:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 818 transitions. [2020-10-28 06:53:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 06:53:03,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:53:03,591 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 06:53:03,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 06:53:03,592 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:53:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:53:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash -926227321, now seen corresponding path program 1 times [2020-10-28 06:53:03,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:53:03,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636837779] [2020-10-28 06:53:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:53:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:05,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:05,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 06:53:05,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 06:53:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1800 [2020-10-28 06:53:05,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 06:53:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 06:53:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 06:53:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:07,409 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:53:07,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:53:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:07,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:07,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:07,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:53:07,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 06:53:07,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:53:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:53:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:53:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:53:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:07,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:07,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:53:07,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 06:53:07,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:53:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:53:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:53:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 06:53:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:07,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:07,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 06:53:07,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 06:53:07,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 06:53:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:53:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 06:53:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 06:53:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:08,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 06:53:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 06:53:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:53:08,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636837779] [2020-10-28 06:53:08,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 06:53:08,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 06:53:08,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725813879] [2020-10-28 06:53:08,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 06:53:08,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:53:08,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 06:53:08,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 06:53:08,141 INFO L87 Difference]: Start difference. First operand 595 states and 818 transitions. Second operand 7 states. [2020-10-28 06:53:09,910 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 06:53:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 06:53:22,642 INFO L93 Difference]: Finished difference Result 1309 states and 1825 transitions. [2020-10-28 06:53:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 06:53:22,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-28 06:53:22,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 06:53:22,649 INFO L225 Difference]: With dead ends: 1309 [2020-10-28 06:53:22,649 INFO L226 Difference]: Without dead ends: 724 [2020-10-28 06:53:22,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 06:53:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-28 06:53:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 597. [2020-10-28 06:53:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-28 06:53:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 820 transitions. [2020-10-28 06:53:22,827 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 820 transitions. Word has length 42 [2020-10-28 06:53:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 06:53:22,827 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 820 transitions. [2020-10-28 06:53:22,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 06:53:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 820 transitions. [2020-10-28 06:53:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 06:53:22,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:53:22,829 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 06:53:22,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 06:53:22,829 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:53:22,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:53:22,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1199045538, now seen corresponding path program 2 times [2020-10-28 06:53:22,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:53:22,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348651450] [2020-10-28 06:53:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:53:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:22,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:25,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:25,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 06:53:25,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 06:53:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-28 06:53:25,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 06:53:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 06:53:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 06:53:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:27,207 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:53:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:53:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:27,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:27,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:53:27,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 06:53:27,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:53:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:53:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:53:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:27,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:53:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:27,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:27,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:27,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:53:27,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:27,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 06:53:27,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:53:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:53:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:53:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 06:53:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:27,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:27,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:27,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 06:53:27,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 06:53:27,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 06:53:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:53:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 06:53:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:27,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 06:53:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:27,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:27,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 06:53:27,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:27,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 06:53:27,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 06:53:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 06:53:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 06:53:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:53:27,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348651450] [2020-10-28 06:53:27,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 06:53:27,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 06:53:27,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585806756] [2020-10-28 06:53:27,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 06:53:27,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:53:27,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 06:53:27,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 06:53:27,998 INFO L87 Difference]: Start difference. First operand 597 states and 820 transitions. Second operand 8 states. [2020-10-28 06:53:29,824 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 06:53:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 06:53:44,508 INFO L93 Difference]: Finished difference Result 1313 states and 1829 transitions. [2020-10-28 06:53:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 06:53:44,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-28 06:53:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 06:53:44,514 INFO L225 Difference]: With dead ends: 1313 [2020-10-28 06:53:44,515 INFO L226 Difference]: Without dead ends: 726 [2020-10-28 06:53:44,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 06:53:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-10-28 06:53:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 599. [2020-10-28 06:53:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-10-28 06:53:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 822 transitions. [2020-10-28 06:53:44,675 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 822 transitions. Word has length 44 [2020-10-28 06:53:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 06:53:44,675 INFO L481 AbstractCegarLoop]: Abstraction has 599 states and 822 transitions. [2020-10-28 06:53:44,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 06:53:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 822 transitions. [2020-10-28 06:53:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 06:53:44,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:53:44,676 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-28 06:53:44,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 06:53:44,677 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:53:44,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:53:44,677 INFO L82 PathProgramCache]: Analyzing trace with hash -818169859, now seen corresponding path program 3 times [2020-10-28 06:53:44,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:53:44,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229851398] [2020-10-28 06:53:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:53:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:46,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:46,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 06:53:46,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 06:53:46,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-28 06:53:46,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 06:53:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 06:53:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 06:53:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:48,761 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:53:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:53:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:48,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:53:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:53:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:53:48,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:53:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:48,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:48,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:53:48,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 06:53:48,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:53:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:53:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:53:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 06:53:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:49,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:49,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 06:53:49,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 06:53:49,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 06:53:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:53:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 06:53:49,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:49,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 06:53:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:53:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:53:49,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:53:49,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 06:53:49,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:53:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 06:53:49,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:53:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 06:53:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 06:53:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 06:53:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:53:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:53:49,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229851398] [2020-10-28 06:53:49,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 06:53:49,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 06:53:49,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366678846] [2020-10-28 06:53:49,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 06:53:49,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:53:49,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 06:53:49,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 06:53:49,629 INFO L87 Difference]: Start difference. First operand 599 states and 822 transitions. Second operand 9 states. [2020-10-28 06:53:51,567 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 06:54:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 06:54:06,615 INFO L93 Difference]: Finished difference Result 1317 states and 1833 transitions. [2020-10-28 06:54:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 06:54:06,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-28 06:54:06,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 06:54:06,622 INFO L225 Difference]: With dead ends: 1317 [2020-10-28 06:54:06,622 INFO L226 Difference]: Without dead ends: 728 [2020-10-28 06:54:06,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 06:54:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-28 06:54:06,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 601. [2020-10-28 06:54:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-10-28 06:54:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 824 transitions. [2020-10-28 06:54:06,787 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 824 transitions. Word has length 46 [2020-10-28 06:54:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 06:54:06,787 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 824 transitions. [2020-10-28 06:54:06,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 06:54:06,787 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 824 transitions. [2020-10-28 06:54:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 06:54:06,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:54:06,789 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 06:54:06,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 06:54:06,789 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:54:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:54:06,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1963051416, now seen corresponding path program 4 times [2020-10-28 06:54:06,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:54:06,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620444251] [2020-10-28 06:54:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:54:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:09,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:09,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 06:54:09,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 06:54:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2852 [2020-10-28 06:54:09,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 06:54:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 06:54:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 06:54:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:11,722 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:54:11,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:54:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:11,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:11,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:54:11,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:54:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 06:54:11,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:54:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:54:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:54:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:54:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:11,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:11,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:54:11,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:54:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 06:54:11,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:54:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:54:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:54:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 06:54:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:12,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:12,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:12,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 06:54:12,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:54:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 06:54:12,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 06:54:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:54:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 06:54:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 06:54:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:12,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:12,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:12,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 06:54:12,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:54:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 06:54:12,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 06:54:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 06:54:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 06:54:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:54:12,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620444251] [2020-10-28 06:54:12,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 06:54:12,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 06:54:12,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915952174] [2020-10-28 06:54:12,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 06:54:12,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:54:12,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 06:54:12,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 06:54:12,652 INFO L87 Difference]: Start difference. First operand 601 states and 824 transitions. Second operand 10 states. [2020-10-28 06:54:14,547 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 06:54:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 06:54:33,685 INFO L93 Difference]: Finished difference Result 1321 states and 1837 transitions. [2020-10-28 06:54:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 06:54:33,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-28 06:54:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 06:54:33,693 INFO L225 Difference]: With dead ends: 1321 [2020-10-28 06:54:33,693 INFO L226 Difference]: Without dead ends: 730 [2020-10-28 06:54:33,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-28 06:54:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-28 06:54:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 603. [2020-10-28 06:54:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-28 06:54:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 826 transitions. [2020-10-28 06:54:33,909 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 826 transitions. Word has length 48 [2020-10-28 06:54:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 06:54:33,910 INFO L481 AbstractCegarLoop]: Abstraction has 603 states and 826 transitions. [2020-10-28 06:54:33,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 06:54:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 826 transitions. [2020-10-28 06:54:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 06:54:33,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:54:33,911 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 06:54:33,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 06:54:33,912 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:54:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:54:33,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1047928717, now seen corresponding path program 5 times [2020-10-28 06:54:33,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:54:33,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323202109] [2020-10-28 06:54:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:54:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:34,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:34,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 06:54:37,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 06:54:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3065 [2020-10-28 06:54:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 06:54:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 06:54:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 06:54:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:39,112 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:54:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:54:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:39,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:39,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:54:39,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:54:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 06:54:39,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:54:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:54:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:54:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:54:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:39,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:54:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:54:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 06:54:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:54:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:54:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:54:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 06:54:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:39,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 06:54:39,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:54:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 06:54:39,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 06:54:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:54:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 06:54:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 06:54:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:54:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:54:39,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:54:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 06:54:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:54:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 06:54:39,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:54:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 06:54:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 06:54:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 06:54:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:54:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:54:40,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323202109] [2020-10-28 06:54:40,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 06:54:40,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 06:54:40,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053499924] [2020-10-28 06:54:40,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 06:54:40,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:54:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 06:54:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 06:54:40,144 INFO L87 Difference]: Start difference. First operand 603 states and 826 transitions. Second operand 11 states. [2020-10-28 06:54:42,106 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-28 06:55:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 06:55:01,096 INFO L93 Difference]: Finished difference Result 1325 states and 1841 transitions. [2020-10-28 06:55:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 06:55:01,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-28 06:55:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 06:55:01,104 INFO L225 Difference]: With dead ends: 1325 [2020-10-28 06:55:01,105 INFO L226 Difference]: Without dead ends: 732 [2020-10-28 06:55:01,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-28 06:55:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-10-28 06:55:01,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 605. [2020-10-28 06:55:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-28 06:55:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 828 transitions. [2020-10-28 06:55:01,301 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 828 transitions. Word has length 50 [2020-10-28 06:55:01,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 06:55:01,302 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 828 transitions. [2020-10-28 06:55:01,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 06:55:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 828 transitions. [2020-10-28 06:55:01,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 06:55:01,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 06:55:01,303 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 06:55:01,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 06:55:01,304 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 06:55:01,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 06:55:01,304 INFO L82 PathProgramCache]: Analyzing trace with hash 208120974, now seen corresponding path program 6 times [2020-10-28 06:55:01,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 06:55:01,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175734423] [2020-10-28 06:55:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 06:55:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:55:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:55:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:55:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:55:04,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:55:04,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 06:55:04,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 06:55:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2822 [2020-10-28 06:55:04,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:55:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 06:55:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 06:55:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 06:55:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:55:06,220 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-28 06:55:06,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 06:55:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:55:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:55:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:55:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 06:55:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:55:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 06:55:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:55:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:55:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:55:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:55:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:55:06,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 06:55:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:55:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:55:06,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:55:06,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 06:55:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:55:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 06:55:06,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:55:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 06:55:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 06:55:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 06:55:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:55:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 06:55:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:55:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:55:06,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:55:06,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 06:55:06,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:55:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 06:55:06,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:55:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 06:55:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 06:55:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 06:55:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:55:06,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 06:55:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 06:55:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 06:55:06,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 06:55:06,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 06:55:06,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 06:55:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 06:55:06,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 06:55:06,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 06:55:06,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 06:55:06,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 06:55:06,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 06:55:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 06:55:07,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175734423] [2020-10-28 06:55:07,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 06:55:07,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 06:55:07,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368611656] [2020-10-28 06:55:07,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 06:55:07,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 06:55:07,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 06:55:07,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-28 06:55:07,249 INFO L87 Difference]: Start difference. First operand 605 states and 828 transitions. Second operand 12 states. [2020-10-28 06:55:09,257 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 529