/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 00:00:26,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 00:00:26,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 00:00:26,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 00:00:26,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 00:00:26,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 00:00:26,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 00:00:26,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 00:00:26,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 00:00:26,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 00:00:26,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 00:00:26,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 00:00:26,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 00:00:26,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 00:00:26,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 00:00:26,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 00:00:26,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 00:00:26,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 00:00:26,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 00:00:26,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 00:00:26,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 00:00:26,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 00:00:26,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 00:00:26,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 00:00:26,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-29 00:00:26,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 00:00:26,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 00:00:26,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 00:00:26,272 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 [2020-10-29 00:00:26,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 00:00:26,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 00:00:26,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 00:00:26,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 00:00:26,299 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 00:00:26,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 00:00:26,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 00:00:26,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 00:00:26,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 00:00:26,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 00:00:26,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 00:00:26,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 00:00:26,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 00:00:26,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 00:00:26,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 00:00:26,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 00:00:26,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 00:00:26,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 00:00:26,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 00:00:26,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 00:00:26,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 00:00:26,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 00:00:26,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 00:00:26,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 00:00:26,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 00:00:26,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 00:00:26,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-29 00:00:26,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-29 00:00:26,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 00:00:26,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 00:00:26,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 00:00:26,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 00:00:26,697 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 00:00:26,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2020-10-29 00:00:26,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26966c97e/53ef28ebd1b94c98920ae65bd934ebc8/FLAG751218379 [2020-10-29 00:00:27,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 00:00:27,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2020-10-29 00:00:27,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26966c97e/53ef28ebd1b94c98920ae65bd934ebc8/FLAG751218379 [2020-10-29 00:00:27,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26966c97e/53ef28ebd1b94c98920ae65bd934ebc8 [2020-10-29 00:00:27,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 00:00:27,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 00:00:27,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 00:00:27,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 00:00:27,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 00:00:27,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:00:27" (1/1) ... [2020-10-29 00:00:27,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0ddd26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:27, skipping insertion in model container [2020-10-29 00:00:27,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:00:27" (1/1) ... [2020-10-29 00:00:27,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 00:00:27,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 00:00:28,236 WARN L1207 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1764] [2020-10-29 00:00:28,237 WARN L1207 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1765-1766] [2020-10-29 00:00:28,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 00:00:28,784 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 00:00:28,910 WARN L1207 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1764] [2020-10-29 00:00:28,910 WARN L1207 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1765-1766] [2020-10-29 00:00:29,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 00:00:29,095 INFO L208 MainTranslator]: Completed translation [2020-10-29 00:00:29,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29 WrapperNode [2020-10-29 00:00:29,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 00:00:29,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 00:00:29,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 00:00:29,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 00:00:29,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (1/1) ... [2020-10-29 00:00:29,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (1/1) ... [2020-10-29 00:00:29,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (1/1) ... [2020-10-29 00:00:29,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (1/1) ... [2020-10-29 00:00:29,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (1/1) ... [2020-10-29 00:00:29,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (1/1) ... [2020-10-29 00:00:29,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (1/1) ... [2020-10-29 00:00:29,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 00:00:29,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 00:00:29,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 00:00:29,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 00:00:29,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (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 [2020-10-29 00:00:29,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 00:00:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 00:00:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~int [2020-10-29 00:00:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-29 00:00:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2020-10-29 00:00:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 00:00:29,336 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2020-10-29 00:00:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_weight [2020-10-29 00:00:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2020-10-29 00:00:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-10-29 00:00:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2020-10-29 00:00:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_1 [2020-10-29 00:00:29,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_5 [2020-10-29 00:00:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_8 [2020-10-29 00:00:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-29 00:00:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kmalloc_12 [2020-10-29 00:00:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 00:00:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-29 00:00:29,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-29 00:00:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-29 00:00:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-29 00:00:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-29 00:00:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-29 00:00:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-10-29 00:00:29,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-10-29 00:00:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_lock [2020-10-29 00:00:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_delay [2020-10-29 00:00:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_unlock [2020-10-29 00:00:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_lock [2020-10-29 00:00:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_delay [2020-10-29 00:00:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_unlock [2020-10-29 00:00:29,341 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_lock_irq [2020-10-29 00:00:29,341 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_spin_write_unlock_irq [2020-10-29 00:00:29,341 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_writer [2020-10-29 00:00:29,341 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_printk [2020-10-29 00:00:29,341 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_stats_print [2020-10-29 00:00:29,341 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_stats [2020-10-29 00:00:29,342 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_print_module_parms [2020-10-29 00:00:29,342 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_cleanup [2020-10-29 00:00:29,342 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_init [2020-10-29 00:00:29,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 00:00:29,342 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2020-10-29 00:00:29,342 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2020-10-29 00:00:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2020-10-29 00:00:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-29 00:00:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-29 00:00:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-10-29 00:00:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-10-29 00:00:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-10-29 00:00:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-10-29 00:00:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-10-29 00:00:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-10-29 00:00:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitmap_weight [2020-10-29 00:00:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-10-29 00:00:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2020-10-29 00:00:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2020-10-29 00:00:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2020-10-29 00:00:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2020-10-29 00:00:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _torture_create_kthread [2020-10-29 00:00:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _torture_stop_kthread [2020-10-29 00:00:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-10-29 00:00:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-29 00:00:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-29 00:00:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2020-10-29 00:00:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_2 [2020-10-29 00:00:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2020-10-29 00:00:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-10-29 00:00:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-10-29 00:00:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_3 [2020-10-29 00:00:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-10-29 00:00:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-29 00:00:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2020-10-29 00:00:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2020-10-29 00:00:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure set_user_nice [2020-10-29 00:00:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure stutter_wait [2020-10-29 00:00:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_cleanup [2020-10-29 00:00:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_init_begin [2020-10-29 00:00:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_init_end [2020-10-29 00:00:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_kthread_stopping [2020-10-29 00:00:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_must_stop [2020-10-29 00:00:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_onoff_failures [2020-10-29 00:00:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_onoff_init [2020-10-29 00:00:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_random [2020-10-29 00:00:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_shuffle_init [2020-10-29 00:00:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_shutdown_absorb [2020-10-29 00:00:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_shutdown_init [2020-10-29 00:00:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_stutter_init [2020-10-29 00:00:29,350 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-10-29 00:00:29,350 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-29 00:00:29,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-29 00:00:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 00:00:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 00:00:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 00:00:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 00:00:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 00:00:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 00:00:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-10-29 00:00:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-10-29 00:00:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-10-29 00:00:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-29 00:00:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-29 00:00:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-10-29 00:00:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-10-29 00:00:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2020-10-29 00:00:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-29 00:00:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure __bitmap_weight [2020-10-29 00:00:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_weight [2020-10-29 00:00:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2020-10-29 00:00:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-10-29 00:00:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 00:00:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2020-10-29 00:00:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2020-10-29 00:00:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2020-10-29 00:00:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2020-10-29 00:00:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_1 [2020-10-29 00:00:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2020-10-29 00:00:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_5 [2020-10-29 00:00:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2020-10-29 00:00:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_8 [2020-10-29 00:00:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2020-10-29 00:00:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-29 00:00:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-29 00:00:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-29 00:00:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-10-29 00:00:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kmalloc_12 [2020-10-29 00:00:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-29 00:00:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-29 00:00:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-10-29 00:00:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 00:00:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 00:00:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 00:00:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-29 00:00:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 00:00:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 00:00:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-29 00:00:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-29 00:00:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-29 00:00:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-29 00:00:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-29 00:00:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-29 00:00:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-10-29 00:00:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2020-10-29 00:00:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2020-10-29 00:00:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure set_user_nice [2020-10-29 00:00:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2020-10-29 00:00:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-10-29 00:00:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure torture_onoff_init [2020-10-29 00:00:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure torture_onoff_failures [2020-10-29 00:00:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure torture_random [2020-10-29 00:00:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure torture_shuffle_init [2020-10-29 00:00:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure torture_shutdown_absorb [2020-10-29 00:00:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure torture_shutdown_init [2020-10-29 00:00:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure stutter_wait [2020-10-29 00:00:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure torture_stutter_init [2020-10-29 00:00:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure torture_init_begin [2020-10-29 00:00:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure torture_init_end [2020-10-29 00:00:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure torture_cleanup [2020-10-29 00:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure torture_must_stop [2020-10-29 00:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure torture_kthread_stopping [2020-10-29 00:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure _torture_create_kthread [2020-10-29 00:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure _torture_stop_kthread [2020-10-29 00:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_cleanup [2020-10-29 00:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_lock [2020-10-29 00:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_delay [2020-10-29 00:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_unlock [2020-10-29 00:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_lock [2020-10-29 00:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_delay [2020-10-29 00:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_unlock [2020-10-29 00:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_lock_irq [2020-10-29 00:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 00:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_spin_write_unlock_irq [2020-10-29 00:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_writer [2020-10-29 00:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~int [2020-10-29 00:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-29 00:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2020-10-29 00:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 00:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 00:00:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_printk [2020-10-29 00:00:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_stats_print [2020-10-29 00:00:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_stats [2020-10-29 00:00:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_print_module_parms [2020-10-29 00:00:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_init [2020-10-29 00:00:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 00:00:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2020-10-29 00:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-29 00:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-10-29 00:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-29 00:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_3 [2020-10-29 00:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2020-10-29 00:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_2 [2020-10-29 00:00:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-10-29 00:00:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 00:00:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-10-29 00:00:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-10-29 00:00:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-10-29 00:00:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-10-29 00:00:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-29 00:00:29,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 00:00:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 00:00:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 00:00:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 00:00:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 00:00:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 00:00:30,245 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-29 00:00:43,353 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 00:00:43,353 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 00:00:43,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:00:43 BoogieIcfgContainer [2020-10-29 00:00:43,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 00:00:43,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 00:00:43,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 00:00:43,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 00:00:43,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:00:27" (1/3) ... [2020-10-29 00:00:43,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbf4469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:00:43, skipping insertion in model container [2020-10-29 00:00:43,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:00:29" (2/3) ... [2020-10-29 00:00:43,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbf4469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:00:43, skipping insertion in model container [2020-10-29 00:00:43,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:00:43" (3/3) ... [2020-10-29 00:00:43,370 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2020-10-29 00:00:43,382 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 00:00:43,388 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 00:00:43,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 00:00:43,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 00:00:43,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 00:00:43,434 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 00:00:43,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 00:00:43,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 00:00:43,434 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 00:00:43,435 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 00:00:43,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 00:00:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states. [2020-10-29 00:00:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 00:00:43,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 00:00:43,483 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 00:00:43,484 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 00:00:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 00:00:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1028992447, now seen corresponding path program 1 times [2020-10-29 00:00:43,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 00:00:43,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431944513] [2020-10-29 00:00:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 00:00:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:00:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:47,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:00:47,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 00:00:47,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 00:00:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3120 [2020-10-29 00:00:47,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:00:47,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:00:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:00:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 00:00:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 00:00:47,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 00:00:48,258 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-29 00:00:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 00:00:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:00:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:48,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:00:48,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:00:48,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:00:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 00:00:48,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:00:48,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:00:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:00:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:00:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:00:48,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 00:00:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 00:00:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:00:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:48,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:00:48,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:00:48,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:00:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 00:00:48,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:00:48,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:00:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:00:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:00:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:00:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:00:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 00:00:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:00:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:48,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:00:48,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:00:48,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:00:48,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:00:48,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:00:48,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:00:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:00:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:00:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:00:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:00:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 00:00:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:00:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:48,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:00:48,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:00:48,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:00:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:00:48,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:00:48,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:00:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:00:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:00:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:00:48,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:00:48,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 00:00:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:00:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:48,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:00:48,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-29 00:00:48,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:00:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:00:48,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:00:48,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:00:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:00:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:00:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:00:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:00:48,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 00:00:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:00:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:00:48,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:00:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:00:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:00:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:00:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 00:00:48,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 00:00:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:00:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:00:48,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:00:48,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:00:48,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:00:48,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:00:48,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:00:48,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:00:48,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:00:48,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:00:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:00:48,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:00:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 00:00:48,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431944513] [2020-10-29 00:00:48,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 00:00:48,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 00:00:48,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292711702] [2020-10-29 00:00:48,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 00:00:48,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 00:00:48,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 00:00:48,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 00:00:48,575 INFO L87 Difference]: Start difference. First operand 583 states. Second operand 5 states. [2020-10-29 00:00:49,723 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 00:00:51,321 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 00:00:52,534 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-29 00:01:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 00:01:16,884 INFO L93 Difference]: Finished difference Result 1453 states and 1966 transitions. [2020-10-29 00:01:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 00:01:16,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-29 00:01:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 00:01:16,916 INFO L225 Difference]: With dead ends: 1453 [2020-10-29 00:01:16,916 INFO L226 Difference]: Without dead ends: 853 [2020-10-29 00:01:16,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 00:01:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-29 00:01:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 696. [2020-10-29 00:01:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-29 00:01:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 891 transitions. [2020-10-29 00:01:17,182 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 891 transitions. Word has length 58 [2020-10-29 00:01:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 00:01:17,182 INFO L481 AbstractCegarLoop]: Abstraction has 696 states and 891 transitions. [2020-10-29 00:01:17,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 00:01:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 891 transitions. [2020-10-29 00:01:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 00:01:17,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 00:01:17,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 00:01:17,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 00:01:17,191 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 00:01:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 00:01:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1178599082, now seen corresponding path program 1 times [2020-10-29 00:01:17,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 00:01:17,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648265449] [2020-10-29 00:01:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 00:01:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:17,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:19,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 00:01:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 00:01:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2385 [2020-10-29 00:01:19,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:19,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:01:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:01:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 00:01:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 00:01:20,835 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-29 00:01:20,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 00:01:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:21,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:21,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:01:21,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 00:01:21,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:21,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:01:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 00:01:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 00:01:21,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 00:01:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:21,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:01:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 00:01:21,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:21,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:01:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 00:01:21,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:21,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 00:01:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:21,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:21,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:01:21,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:21,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 00:01:21,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:21,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:01:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 00:01:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:21,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 00:01:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:21,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:21,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:01:21,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 00:01:21,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:21,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:01:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 00:01:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:21,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 00:01:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:21,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:21,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-29 00:01:21,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:01:21,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:21,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:01:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 00:01:21,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 00:01:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:21,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:21,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:01:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 00:01:21,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:21,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:01:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 00:01:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 00:01:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:21,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:21,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:21,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:01:21,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:01:21,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:21,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:01:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 00:01:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 00:01:21,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648265449] [2020-10-29 00:01:21,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 00:01:21,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 00:01:21,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608334073] [2020-10-29 00:01:21,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 00:01:21,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 00:01:21,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 00:01:21,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 00:01:21,359 INFO L87 Difference]: Start difference. First operand 696 states and 891 transitions. Second operand 5 states. [2020-10-29 00:01:22,448 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 00:01:24,861 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-29 00:01:26,087 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 413 [2020-10-29 00:01:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 00:01:41,135 INFO L93 Difference]: Finished difference Result 1529 states and 2016 transitions. [2020-10-29 00:01:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 00:01:41,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 00:01:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 00:01:41,148 INFO L225 Difference]: With dead ends: 1529 [2020-10-29 00:01:41,148 INFO L226 Difference]: Without dead ends: 860 [2020-10-29 00:01:41,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 00:01:41,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-10-29 00:01:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 711. [2020-10-29 00:01:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2020-10-29 00:01:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 908 transitions. [2020-10-29 00:01:41,368 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 908 transitions. Word has length 62 [2020-10-29 00:01:41,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 00:01:41,369 INFO L481 AbstractCegarLoop]: Abstraction has 711 states and 908 transitions. [2020-10-29 00:01:41,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 00:01:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 908 transitions. [2020-10-29 00:01:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 00:01:41,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 00:01:41,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 00:01:41,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 00:01:41,374 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 00:01:41,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 00:01:41,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1119605861, now seen corresponding path program 1 times [2020-10-29 00:01:41,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 00:01:41,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037967202] [2020-10-29 00:01:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 00:01:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:44,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:44,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 00:01:44,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 00:01:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3101 [2020-10-29 00:01:44,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:44,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:01:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 00:01:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 00:01:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:45,765 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-29 00:01:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 00:01:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:46,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:46,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:01:46,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 00:01:46,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:46,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 00:01:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 00:01:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:46,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:46,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:01:46,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:01:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:46,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:46,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 00:01:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:46,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:01:46,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:01:46,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:46,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:46,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 00:01:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:46,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:01:46,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:01:46,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:46,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:46,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 00:01:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:46,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-29 00:01:46,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:01:46,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:46,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:46,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 00:01:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:46,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:46,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:01:46,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:01:46,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:46,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:01:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 00:01:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:46,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:46,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:01:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:01:46,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:46,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:01:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 00:01:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:01:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:01:46,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:01:46,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:01:46,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:01:46,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:01:46,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:01:46,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:01:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:01:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:01:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:01:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:01:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 00:01:46,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037967202] [2020-10-29 00:01:46,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 00:01:46,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 00:01:46,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934583274] [2020-10-29 00:01:46,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 00:01:46,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 00:01:46,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 00:01:46,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 00:01:46,139 INFO L87 Difference]: Start difference. First operand 711 states and 908 transitions. Second operand 5 states. [2020-10-29 00:01:47,194 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 00:02:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 00:02:04,781 INFO L93 Difference]: Finished difference Result 1603 states and 2132 transitions. [2020-10-29 00:02:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 00:02:04,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-29 00:02:04,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 00:02:04,789 INFO L225 Difference]: With dead ends: 1603 [2020-10-29 00:02:04,789 INFO L226 Difference]: Without dead ends: 919 [2020-10-29 00:02:04,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 00:02:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-10-29 00:02:05,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 716. [2020-10-29 00:02:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-10-29 00:02:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 914 transitions. [2020-10-29 00:02:05,016 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 914 transitions. Word has length 73 [2020-10-29 00:02:05,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 00:02:05,016 INFO L481 AbstractCegarLoop]: Abstraction has 716 states and 914 transitions. [2020-10-29 00:02:05,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 00:02:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 914 transitions. [2020-10-29 00:02:05,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 00:02:05,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 00:02:05,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 00:02:05,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 00:02:05,020 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 00:02:05,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 00:02:05,021 INFO L82 PathProgramCache]: Analyzing trace with hash 782086428, now seen corresponding path program 1 times [2020-10-29 00:02:05,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 00:02:05,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512586530] [2020-10-29 00:02:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 00:02:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:10,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:10,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 00:02:10,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 00:02:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 00:02:10,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:10,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 00:02:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:02:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 00:02:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,297 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-29 00:02:11,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 00:02:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:11,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:11,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:11,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:11,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 00:02:11,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:11,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 00:02:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 00:02:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:11,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:11,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:02:11,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 00:02:11,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:11,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 00:02:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 00:02:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:11,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:11,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:02:11,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 00:02:11,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:11,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 00:02:11,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 00:02:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:11,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:11,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:02:11,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 00:02:11,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:11,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 00:02:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 00:02:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:11,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-29 00:02:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:02:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:11,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 00:02:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 00:02:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:11,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:11,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:11,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:11,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 00:02:11,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:11,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 00:02:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 00:02:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:02:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:11,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 00:02:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 00:02:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:11,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:11,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:11,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:11,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 00:02:11,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:11,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:11,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:11,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:11,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 00:02:11,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 00:02:11,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512586530] [2020-10-29 00:02:11,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 00:02:11,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 00:02:11,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235013735] [2020-10-29 00:02:11,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 00:02:11,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 00:02:11,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 00:02:11,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 00:02:11,695 INFO L87 Difference]: Start difference. First operand 716 states and 914 transitions. Second operand 5 states. [2020-10-29 00:02:12,826 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 00:02:14,769 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 00:02:15,978 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-29 00:02:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 00:02:38,286 INFO L93 Difference]: Finished difference Result 1608 states and 2205 transitions. [2020-10-29 00:02:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 00:02:38,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-29 00:02:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 00:02:38,298 INFO L225 Difference]: With dead ends: 1608 [2020-10-29 00:02:38,298 INFO L226 Difference]: Without dead ends: 1573 [2020-10-29 00:02:38,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 00:02:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2020-10-29 00:02:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1257. [2020-10-29 00:02:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1257 states. [2020-10-29 00:02:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1647 transitions. [2020-10-29 00:02:38,608 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1647 transitions. Word has length 75 [2020-10-29 00:02:38,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 00:02:38,609 INFO L481 AbstractCegarLoop]: Abstraction has 1257 states and 1647 transitions. [2020-10-29 00:02:38,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 00:02:38,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1647 transitions. [2020-10-29 00:02:38,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 00:02:38,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 00:02:38,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 00:02:38,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 00:02:38,615 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 00:02:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 00:02:38,615 INFO L82 PathProgramCache]: Analyzing trace with hash -991932954, now seen corresponding path program 1 times [2020-10-29 00:02:38,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 00:02:38,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623178187] [2020-10-29 00:02:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 00:02:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:40,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:43,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:43,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 00:02:43,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 00:02:43,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 00:02:43,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:43,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:43,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:02:43,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 00:02:43,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 00:02:43,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:44,862 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-29 00:02:44,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 00:02:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:44,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:44,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:44,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 00:02:44,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:44,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 00:02:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:02:45,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:02:45,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:45,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 00:02:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:02:45,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:02:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 00:02:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:02:45,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:02:45,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 00:02:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-29 00:02:45,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:02:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 00:02:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 00:02:45,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 00:02:45,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 00:02:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 00:02:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:45,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:02:45,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:02:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 00:02:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:45,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:02:45,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:02:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 00:02:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:45,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:02:45,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:02:45,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 00:02:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:02:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:02:45,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:02:45,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:02:45,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:02:45,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:02:45,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:02:45,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:02:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:02:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:02:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:02:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:02:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 00:02:45,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623178187] [2020-10-29 00:02:45,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 00:02:45,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 00:02:45,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530447716] [2020-10-29 00:02:45,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 00:02:45,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 00:02:45,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 00:02:45,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 00:02:45,139 INFO L87 Difference]: Start difference. First operand 1257 states and 1647 transitions. Second operand 7 states. [2020-10-29 00:02:46,283 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 00:02:48,107 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-29 00:02:49,349 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-29 00:03:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 00:03:12,183 INFO L93 Difference]: Finished difference Result 4270 states and 5907 transitions. [2020-10-29 00:03:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 00:03:12,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-29 00:03:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 00:03:12,247 INFO L225 Difference]: With dead ends: 4270 [2020-10-29 00:03:12,248 INFO L226 Difference]: Without dead ends: 3040 [2020-10-29 00:03:12,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 00:03:12,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2020-10-29 00:03:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2289. [2020-10-29 00:03:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-10-29 00:03:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3033 transitions. [2020-10-29 00:03:12,794 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3033 transitions. Word has length 90 [2020-10-29 00:03:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 00:03:12,795 INFO L481 AbstractCegarLoop]: Abstraction has 2289 states and 3033 transitions. [2020-10-29 00:03:12,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 00:03:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3033 transitions. [2020-10-29 00:03:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 00:03:12,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 00:03:12,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 00:03:12,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 00:03:12,804 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 00:03:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 00:03:12,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1372436140, now seen corresponding path program 1 times [2020-10-29 00:03:12,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 00:03:12,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545615277] [2020-10-29 00:03:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 00:03:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:12,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:12,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:16,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:16,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 00:03:16,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 00:03:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3948 [2020-10-29 00:03:16,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:16,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:03:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 00:03:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 00:03:16,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,082 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-29 00:03:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 00:03:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:18,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 00:03:18,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 00:03:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:03:18,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:18,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 00:03:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:03:18,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:03:18,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 00:03:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:03:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 00:03:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-29 00:03:18,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 00:03:18,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 00:03:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 00:03:18,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 00:03:18,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 00:03:18,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 00:03:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:18,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:18,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 00:03:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 00:03:18,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:03:18,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 00:03:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 00:03:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:18,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 00:03:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:18,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:18,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:03:18,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 00:03:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:03:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 00:03:18,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545615277] [2020-10-29 00:03:18,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 00:03:18,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 00:03:18,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728298300] [2020-10-29 00:03:18,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 00:03:18,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 00:03:18,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 00:03:18,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 00:03:18,416 INFO L87 Difference]: Start difference. First operand 2289 states and 3033 transitions. Second operand 8 states. [2020-10-29 00:03:19,554 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 00:03:21,744 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-29 00:03:23,000 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-29 00:03:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 00:03:51,927 INFO L93 Difference]: Finished difference Result 6637 states and 9196 transitions. [2020-10-29 00:03:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 00:03:51,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-10-29 00:03:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 00:03:51,955 INFO L225 Difference]: With dead ends: 6637 [2020-10-29 00:03:51,955 INFO L226 Difference]: Without dead ends: 4375 [2020-10-29 00:03:51,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 00:03:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2020-10-29 00:03:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 3367. [2020-10-29 00:03:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3367 states. [2020-10-29 00:03:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 4493 transitions. [2020-10-29 00:03:52,941 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 4493 transitions. Word has length 94 [2020-10-29 00:03:52,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 00:03:52,941 INFO L481 AbstractCegarLoop]: Abstraction has 3367 states and 4493 transitions. [2020-10-29 00:03:52,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 00:03:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 4493 transitions. [2020-10-29 00:03:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 00:03:52,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 00:03:52,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 00:03:52,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 00:03:52,952 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 00:03:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 00:03:52,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1318187326, now seen corresponding path program 1 times [2020-10-29 00:03:52,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 00:03:52,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250918180] [2020-10-29 00:03:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 00:03:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:54,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:57,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:57,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 00:03:57,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 00:03:57,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 00:03:57,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:57,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 00:03:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 00:03:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 00:03:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,194 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-29 00:03:59,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 00:03:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:59,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 00:03:59,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 00:03:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:03:59,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:03:59,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 00:03:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:03:59,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 00:03:59,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 00:03:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 00:03:59,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:59,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 00:03:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-29 00:03:59,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:59,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 00:03:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 00:03:59,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 00:03:59,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 00:03:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 00:03:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 00:03:59,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:03:59,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 00:03:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:59,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:03:59,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 00:03:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 00:03:59,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:59,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 00:03:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:59,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 00:03:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 00:03:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:59,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 00:03:59,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:03:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 00:03:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:59,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:59,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:03:59,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 00:03:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 00:03:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 00:03:59,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 00:03:59,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 00:03:59,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 00:03:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 00:03:59,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-29 00:03:59,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-29 00:03:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 00:03:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 00:03:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 00:03:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 00:03:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 00:03:59,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250918180] [2020-10-29 00:03:59,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 00:03:59,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 00:03:59,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776249057] [2020-10-29 00:03:59,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 00:03:59,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 00:03:59,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 00:03:59,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 00:03:59,518 INFO L87 Difference]: Start difference. First operand 3367 states and 4493 transitions. Second operand 6 states. [2020-10-29 00:04:00,656 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 00:04:02,415 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 00:04:03,654 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 411