/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:51:13,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:51:13,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:51:13,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:51:13,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:51:13,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:51:13,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:51:13,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:51:13,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:51:13,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:51:13,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:51:13,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:51:13,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:51:13,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:51:13,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:51:13,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:51:13,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:51:13,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:51:13,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:51:13,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:51:13,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:51:13,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:51:13,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:51:13,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:51:13,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:51:13,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:51:13,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:51:13,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:51:13,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:51:13,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:51:13,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:51:13,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:51:13,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:51:13,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:51:13,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:51:13,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:51:13,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:51:13,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:51:13,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:51:13,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:51:13,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:51:13,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:51:13,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:51:13,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:51:13,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:51:13,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:51:13,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:51:13,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:51:13,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:51:13,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:51:13,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:51:13,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:51:13,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:51:13,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:51:13,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:51:13,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:51:13,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:51:13,835 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:51:13,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:51:13,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:51:13,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:51:13,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:51:13,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:51:13,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:51:13,836 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:51:14,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:51:14,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:51:14,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:51:14,242 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:51:14,243 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:51:14,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2021-02-21 18:51:14,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a5c231b4/fc9444f7423741c1bb93fb150db045de/FLAG58469602f [2021-02-21 18:51:15,105 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:51:15,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2021-02-21 18:51:15,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a5c231b4/fc9444f7423741c1bb93fb150db045de/FLAG58469602f [2021-02-21 18:51:15,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a5c231b4/fc9444f7423741c1bb93fb150db045de [2021-02-21 18:51:15,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:51:15,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:51:15,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:51:15,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:51:15,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:51:15,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:15,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b945076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15, skipping insertion in model container [2021-02-21 18:51:15,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:15,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:51:15,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:51:15,770 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c[18079,18092] [2021-02-21 18:51:15,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:51:15,785 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:51:15,910 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c[18079,18092] [2021-02-21 18:51:15,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:51:15,957 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:51:15,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15 WrapperNode [2021-02-21 18:51:15,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:51:15,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:51:15,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:51:15,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:51:15,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:15,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:16,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:16,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:16,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:16,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:16,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (1/1) ... [2021-02-21 18:51:16,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:51:16,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:51:16,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:51:16,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:51:16,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-21 18:51:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:51:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:51:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:51:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:51:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:51:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:51:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:51:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:51:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:51:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:51:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:51:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:51:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:51:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:51:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:51:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:51:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:51:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:51:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:51:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:51:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:51:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:51:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:51:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:51:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:51:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:51:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:51:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:51:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:51:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:51:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:51:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:51:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:51:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:51:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:51:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:51:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:51:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:51:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:51:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:51:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:51:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:51:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:51:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:51:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:51:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:51:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:51:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:51:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:51:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:51:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:51:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:51:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:51:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:51:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:51:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:51:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:51:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:51:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:51:17,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:51:17,382 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:51:17,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:51:17 BoogieIcfgContainer [2021-02-21 18:51:17,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:51:17,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:51:17,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:51:17,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:51:17,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:51:15" (1/3) ... [2021-02-21 18:51:17,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d7abd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:51:17, skipping insertion in model container [2021-02-21 18:51:17,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:51:15" (2/3) ... [2021-02-21 18:51:17,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d7abd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:51:17, skipping insertion in model container [2021-02-21 18:51:17,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:51:17" (3/3) ... [2021-02-21 18:51:17,395 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2021-02-21 18:51:17,403 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:51:17,410 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:51:17,432 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:51:17,460 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:51:17,460 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:51:17,460 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:51:17,460 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:51:17,460 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:51:17,461 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:51:17,461 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:51:17,461 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:51:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2021-02-21 18:51:17,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-21 18:51:17,507 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:17,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:17,509 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:17,516 INFO L82 PathProgramCache]: Analyzing trace with hash -170070573, now seen corresponding path program 1 times [2021-02-21 18:51:17,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:17,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851722704] [2021-02-21 18:51:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:17,622 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,320 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:51:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:18,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:18,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:18,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851722704] [2021-02-21 18:51:18,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:18,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:51:18,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490013819] [2021-02-21 18:51:18,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:51:18,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:18,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:51:18,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:51:18,504 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 4 states. [2021-02-21 18:51:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:20,133 INFO L93 Difference]: Finished difference Result 495 states and 583 transitions. [2021-02-21 18:51:20,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 18:51:20,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-21 18:51:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:20,153 INFO L225 Difference]: With dead ends: 495 [2021-02-21 18:51:20,153 INFO L226 Difference]: Without dead ends: 317 [2021-02-21 18:51:20,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:51:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-21 18:51:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 267. [2021-02-21 18:51:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-21 18:51:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2021-02-21 18:51:20,364 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 153 [2021-02-21 18:51:20,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:20,366 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2021-02-21 18:51:20,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:51:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2021-02-21 18:51:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-21 18:51:20,370 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:20,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:20,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:51:20,371 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:20,372 INFO L82 PathProgramCache]: Analyzing trace with hash -899151028, now seen corresponding path program 1 times [2021-02-21 18:51:20,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:20,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5831034] [2021-02-21 18:51:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:20,377 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:20,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,806 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 18:51:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:51:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:20,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:20,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:20,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5831034] [2021-02-21 18:51:20,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:20,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 18:51:20,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873313490] [2021-02-21 18:51:20,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 18:51:20,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:20,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 18:51:20,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:51:20,927 INFO L87 Difference]: Start difference. First operand 267 states and 289 transitions. Second operand 5 states. [2021-02-21 18:51:21,738 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:22,897 INFO L93 Difference]: Finished difference Result 414 states and 467 transitions. [2021-02-21 18:51:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 18:51:22,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-21 18:51:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:22,903 INFO L225 Difference]: With dead ends: 414 [2021-02-21 18:51:22,903 INFO L226 Difference]: Without dead ends: 306 [2021-02-21 18:51:22,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:51:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-21 18:51:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 257. [2021-02-21 18:51:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-02-21 18:51:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 276 transitions. [2021-02-21 18:51:23,010 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 276 transitions. Word has length 154 [2021-02-21 18:51:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:23,011 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 276 transitions. [2021-02-21 18:51:23,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 18:51:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 276 transitions. [2021-02-21 18:51:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-02-21 18:51:23,013 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:23,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:23,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:51:23,014 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:23,015 INFO L82 PathProgramCache]: Analyzing trace with hash -449562862, now seen corresponding path program 1 times [2021-02-21 18:51:23,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:23,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715076047] [2021-02-21 18:51:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:23,019 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:23,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:23,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:23,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:23,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:23,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:23,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:23,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,445 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:51:23,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:23,608 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:51:23,609 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:51:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:51:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:51:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:23,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:23,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:23,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715076047] [2021-02-21 18:51:23,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:23,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:51:23,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296168723] [2021-02-21 18:51:23,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:51:23,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:23,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:51:23,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:51:23,697 INFO L87 Difference]: Start difference. First operand 257 states and 276 transitions. Second operand 10 states. [2021-02-21 18:51:24,306 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:24,796 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:25,172 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:51:25,571 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:25,948 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:26,392 WARN L202 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:27,512 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:29,654 INFO L93 Difference]: Finished difference Result 676 states and 779 transitions. [2021-02-21 18:51:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:51:29,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2021-02-21 18:51:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:29,661 INFO L225 Difference]: With dead ends: 676 [2021-02-21 18:51:29,661 INFO L226 Difference]: Without dead ends: 539 [2021-02-21 18:51:29,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:51:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-02-21 18:51:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 450. [2021-02-21 18:51:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2021-02-21 18:51:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 499 transitions. [2021-02-21 18:51:29,865 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 499 transitions. Word has length 163 [2021-02-21 18:51:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:29,866 INFO L480 AbstractCegarLoop]: Abstraction has 450 states and 499 transitions. [2021-02-21 18:51:29,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:51:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 499 transitions. [2021-02-21 18:51:29,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 18:51:29,870 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:29,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:29,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:51:29,871 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:29,871 INFO L82 PathProgramCache]: Analyzing trace with hash 298088667, now seen corresponding path program 1 times [2021-02-21 18:51:29,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:29,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389779129] [2021-02-21 18:51:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:29,875 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:29,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:29,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:29,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:29,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:29,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:29,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:29,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:29,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:29,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:29,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:29,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:29,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,380 WARN L202 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:30,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:51:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:30,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:51:30,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 18:51:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 18:51:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:30,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:30,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:30,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389779129] [2021-02-21 18:51:30,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:30,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:51:30,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464607165] [2021-02-21 18:51:30,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:51:30,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:30,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:51:30,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:51:30,616 INFO L87 Difference]: Start difference. First operand 450 states and 499 transitions. Second operand 7 states. [2021-02-21 18:51:31,188 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:33,112 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:33,875 INFO L93 Difference]: Finished difference Result 1118 states and 1323 transitions. [2021-02-21 18:51:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:51:33,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2021-02-21 18:51:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:33,883 INFO L225 Difference]: With dead ends: 1118 [2021-02-21 18:51:33,883 INFO L226 Difference]: Without dead ends: 788 [2021-02-21 18:51:33,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:51:33,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-02-21 18:51:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 660. [2021-02-21 18:51:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2021-02-21 18:51:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 733 transitions. [2021-02-21 18:51:34,151 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 733 transitions. Word has length 171 [2021-02-21 18:51:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:34,152 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 733 transitions. [2021-02-21 18:51:34,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:51:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 733 transitions. [2021-02-21 18:51:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:51:34,154 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:34,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:34,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:51:34,155 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:34,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1436928756, now seen corresponding path program 1 times [2021-02-21 18:51:34,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:34,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63411931] [2021-02-21 18:51:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:34,159 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,552 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 18:51:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:51:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:51:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:34,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:34,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:34,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63411931] [2021-02-21 18:51:34,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:34,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:51:34,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616444155] [2021-02-21 18:51:34,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:51:34,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:34,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:51:34,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:51:34,733 INFO L87 Difference]: Start difference. First operand 660 states and 733 transitions. Second operand 10 states. [2021-02-21 18:51:35,399 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:36,794 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:37,217 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:37,646 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:38,040 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:38,437 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:38,810 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:39,163 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:39,679 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:41,806 INFO L93 Difference]: Finished difference Result 1783 states and 2092 transitions. [2021-02-21 18:51:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 18:51:41,807 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:51:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:41,817 INFO L225 Difference]: With dead ends: 1783 [2021-02-21 18:51:41,817 INFO L226 Difference]: Without dead ends: 1243 [2021-02-21 18:51:41,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-21 18:51:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2021-02-21 18:51:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1096. [2021-02-21 18:51:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2021-02-21 18:51:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1222 transitions. [2021-02-21 18:51:42,339 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1222 transitions. Word has length 172 [2021-02-21 18:51:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:42,340 INFO L480 AbstractCegarLoop]: Abstraction has 1096 states and 1222 transitions. [2021-02-21 18:51:42,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:51:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1222 transitions. [2021-02-21 18:51:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:51:42,343 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:42,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:42,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:51:42,344 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:42,345 INFO L82 PathProgramCache]: Analyzing trace with hash 13267262, now seen corresponding path program 1 times [2021-02-21 18:51:42,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:42,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963712428] [2021-02-21 18:51:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:42,348 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,730 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:42,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 18:51:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:51:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:51:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:42,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:42,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:42,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:42,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963712428] [2021-02-21 18:51:42,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:42,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:51:42,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614003236] [2021-02-21 18:51:42,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:51:42,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:42,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:51:42,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:51:42,968 INFO L87 Difference]: Start difference. First operand 1096 states and 1222 transitions. Second operand 11 states. [2021-02-21 18:51:43,766 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:45,392 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:45,843 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:46,296 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:46,682 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:51:47,062 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:48,022 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:51:48,385 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:48,820 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:50,091 INFO L93 Difference]: Finished difference Result 2342 states and 2724 transitions. [2021-02-21 18:51:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 18:51:50,092 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2021-02-21 18:51:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:50,103 INFO L225 Difference]: With dead ends: 2342 [2021-02-21 18:51:50,103 INFO L226 Difference]: Without dead ends: 1366 [2021-02-21 18:51:50,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 18:51:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2021-02-21 18:51:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1090. [2021-02-21 18:51:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2021-02-21 18:51:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1210 transitions. [2021-02-21 18:51:50,589 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1210 transitions. Word has length 177 [2021-02-21 18:51:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:50,590 INFO L480 AbstractCegarLoop]: Abstraction has 1090 states and 1210 transitions. [2021-02-21 18:51:50,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:51:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1210 transitions. [2021-02-21 18:51:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-21 18:51:50,595 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:50,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:50,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:51:50,596 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:50,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:50,596 INFO L82 PathProgramCache]: Analyzing trace with hash 443601507, now seen corresponding path program 1 times [2021-02-21 18:51:50,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:50,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651850518] [2021-02-21 18:51:50,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:50,600 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:50,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:50,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:50,932 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:50,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:50,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:50,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:50,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:50,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:50,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:50,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:50,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:51:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:51,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:51,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:51,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:51,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:51:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:51:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:51:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-21 18:51:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-21 18:51:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:51,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:51,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:51,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651850518] [2021-02-21 18:51:51,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:51,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:51:51,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160412544] [2021-02-21 18:51:51,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:51:51,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:51,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:51:51,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:51:51,223 INFO L87 Difference]: Start difference. First operand 1090 states and 1210 transitions. Second operand 11 states. [2021-02-21 18:51:52,747 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:53,140 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:51:53,549 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-21 18:51:53,943 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:54,344 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:51:54,734 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:56,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:51:56,526 INFO L93 Difference]: Finished difference Result 2488 states and 2975 transitions. [2021-02-21 18:51:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:51:56,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 223 [2021-02-21 18:51:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:51:56,540 INFO L225 Difference]: With dead ends: 2488 [2021-02-21 18:51:56,540 INFO L226 Difference]: Without dead ends: 1518 [2021-02-21 18:51:56,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:51:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-02-21 18:51:57,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1122. [2021-02-21 18:51:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2021-02-21 18:51:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1242 transitions. [2021-02-21 18:51:57,102 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1242 transitions. Word has length 223 [2021-02-21 18:51:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:51:57,103 INFO L480 AbstractCegarLoop]: Abstraction has 1122 states and 1242 transitions. [2021-02-21 18:51:57,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:51:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1242 transitions. [2021-02-21 18:51:57,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-21 18:51:57,109 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:51:57,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:51:57,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:51:57,110 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:51:57,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:51:57,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1883400899, now seen corresponding path program 1 times [2021-02-21 18:51:57,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:51:57,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271167558] [2021-02-21 18:51:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:51:57,113 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:51:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:57,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:57,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,484 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:51:57,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:51:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:51:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:51:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:51:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:57,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:51:57,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:51:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:51:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:51:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:51:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:51:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:57,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:57,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:51:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:57,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:51:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:51:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:51:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:51:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-21 18:51:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-21 18:51:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:51:57,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:51:57,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:51:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:51:57,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271167558] [2021-02-21 18:51:57,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:51:57,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 18:51:57,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096643629] [2021-02-21 18:51:57,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 18:51:57,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:51:57,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 18:51:57,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-21 18:51:57,754 INFO L87 Difference]: Start difference. First operand 1122 states and 1242 transitions. Second operand 14 states. [2021-02-21 18:51:58,586 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:51:59,009 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:51:59,387 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:51:59,757 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:00,128 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:01,238 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:01,626 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:02,044 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:02,457 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:02,855 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:52:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:04,977 INFO L93 Difference]: Finished difference Result 2556 states and 3047 transitions. [2021-02-21 18:52:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:52:04,977 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 223 [2021-02-21 18:52:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:04,987 INFO L225 Difference]: With dead ends: 2556 [2021-02-21 18:52:04,987 INFO L226 Difference]: Without dead ends: 1554 [2021-02-21 18:52:04,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-21 18:52:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-02-21 18:52:05,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1146. [2021-02-21 18:52:05,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2021-02-21 18:52:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1266 transitions. [2021-02-21 18:52:05,503 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1266 transitions. Word has length 223 [2021-02-21 18:52:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:05,504 INFO L480 AbstractCegarLoop]: Abstraction has 1146 states and 1266 transitions. [2021-02-21 18:52:05,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 18:52:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1266 transitions. [2021-02-21 18:52:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-21 18:52:05,509 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:05,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:52:05,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:52:05,509 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1262929152, now seen corresponding path program 1 times [2021-02-21 18:52:05,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:05,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187701582] [2021-02-21 18:52:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:05,514 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:05,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:05,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:05,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:05,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:05,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:52:05,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:05,932 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:05,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:05,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:05,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:52:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:05,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:05,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:05,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:05,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:52:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:05,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:05,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:52:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:52:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:52:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:52:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:52:06,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:52:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:52:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:52:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:52:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-02-21 18:52:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-02-21 18:52:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:06,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:06,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:52:06,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187701582] [2021-02-21 18:52:06,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:52:06,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:52:06,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081323624] [2021-02-21 18:52:06,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:52:06,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:52:06,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:52:06,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:52:06,164 INFO L87 Difference]: Start difference. First operand 1146 states and 1266 transitions. Second operand 8 states. [2021-02-21 18:52:06,875 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:07,704 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:11,757 INFO L93 Difference]: Finished difference Result 3764 states and 4573 transitions. [2021-02-21 18:52:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-21 18:52:11,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2021-02-21 18:52:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:11,775 INFO L225 Difference]: With dead ends: 3764 [2021-02-21 18:52:11,775 INFO L226 Difference]: Without dead ends: 2738 [2021-02-21 18:52:11,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-02-21 18:52:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-02-21 18:52:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2188. [2021-02-21 18:52:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2188 states. [2021-02-21 18:52:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2472 transitions. [2021-02-21 18:52:12,984 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2472 transitions. Word has length 223 [2021-02-21 18:52:12,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:12,985 INFO L480 AbstractCegarLoop]: Abstraction has 2188 states and 2472 transitions. [2021-02-21 18:52:12,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:52:12,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2472 transitions. [2021-02-21 18:52:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-02-21 18:52:12,990 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:12,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:52:12,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:52:12,990 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:12,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2122441274, now seen corresponding path program 1 times [2021-02-21 18:52:12,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:12,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185551299] [2021-02-21 18:52:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:12,995 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:52:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:13,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:13,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:52:13,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,440 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:52:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:52:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:52:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:52:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:52:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:13,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:52:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:52:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:52:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:52:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:52:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:52:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:52:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:52:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:52:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,644 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-21 18:52:13,646 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-21 18:52:13,673 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-21 18:52:13,675 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-21 18:52:13,710 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 18:52:13,711 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 18:52:13,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:13,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:13,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 18:52:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:13,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:52:13,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 18:52:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-02-21 18:52:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-02-21 18:52:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:52:13,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:13,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:52:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:52:13,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185551299] [2021-02-21 18:52:13,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:52:13,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-21 18:52:13,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295405037] [2021-02-21 18:52:13,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-21 18:52:13,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:52:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-21 18:52:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:52:13,961 INFO L87 Difference]: Start difference. First operand 2188 states and 2472 transitions. Second operand 21 states. [2021-02-21 18:52:14,710 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:15,257 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:52:15,675 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-02-21 18:52:16,079 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:16,508 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:52:16,913 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:18,074 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:52:19,090 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:19,562 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:52:20,154 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:20,616 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:52:22,434 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:22,956 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:52:23,413 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:23,911 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:52:24,401 WARN L202 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:24,978 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:52:25,478 WARN L202 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:52:26,018 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-02-21 18:52:26,910 WARN L202 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2021-02-21 18:52:27,833 WARN L202 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 211 [2021-02-21 18:52:28,598 WARN L202 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2021-02-21 18:52:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:52:30,955 INFO L93 Difference]: Finished difference Result 4713 states and 5527 transitions. [2021-02-21 18:52:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-21 18:52:30,955 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 228 [2021-02-21 18:52:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:52:30,972 INFO L225 Difference]: With dead ends: 4713 [2021-02-21 18:52:30,972 INFO L226 Difference]: Without dead ends: 2645 [2021-02-21 18:52:30,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=793, Invalid=3367, Unknown=0, NotChecked=0, Total=4160 [2021-02-21 18:52:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-02-21 18:52:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2114. [2021-02-21 18:52:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2021-02-21 18:52:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2358 transitions. [2021-02-21 18:52:31,826 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2358 transitions. Word has length 228 [2021-02-21 18:52:31,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:52:31,826 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 2358 transitions. [2021-02-21 18:52:31,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-21 18:52:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2358 transitions. [2021-02-21 18:52:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-02-21 18:52:31,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:52:31,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:52:31,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:52:31,833 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:52:31,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:52:31,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1349340841, now seen corresponding path program 1 times [2021-02-21 18:52:31,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:52:31,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220861512] [2021-02-21 18:52:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:52:32,231 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-21 18:52:32,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:32,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-02-21 18:52:32,534 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-21 18:52:32,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:32,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-02-21 18:52:32,848 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-21 18:52:32,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:32,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-02-21 18:52:33,149 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-21 18:52:33,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-02-21 18:52:33,426 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-21 18:52:33,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-02-21 18:52:33,718 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2021-02-21 18:52:33,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-02-21 18:52:33,951 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-21 18:52:33,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:33,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-02-21 18:52:34,192 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2021-02-21 18:52:34,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:52:34,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-02-21 18:52:34,201 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 18:52:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:52:34,465 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:52:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:52:34,698 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:52:35,016 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:52:35,018 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:52:35,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 18:52:35,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:52:35 BoogieIcfgContainer [2021-02-21 18:52:35,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:52:35,084 INFO L168 Benchmark]: Toolchain (without parser) took 79692.93 ms. Allocated memory was 156.2 MB in the beginning and 960.5 MB in the end (delta: 804.3 MB). Free memory was 132.5 MB in the beginning and 899.3 MB in the end (delta: -766.7 MB). Peak memory consumption was 592.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:52:35,084 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:52:35,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.22 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 110.2 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:52:35,085 INFO L168 Benchmark]: Boogie Preprocessor took 158.08 ms. Allocated memory is still 156.2 MB. Free memory was 110.2 MB in the beginning and 106.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:52:35,085 INFO L168 Benchmark]: RCFGBuilder took 1267.73 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 106.1 MB in the beginning and 152.9 MB in the end (delta: -46.8 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:52:35,085 INFO L168 Benchmark]: TraceAbstraction took 77695.83 ms. Allocated memory was 187.7 MB in the beginning and 960.5 MB in the end (delta: 772.8 MB). Free memory was 152.4 MB in the beginning and 899.3 MB in the end (delta: -746.9 MB). Peak memory consumption was 580.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:52:35,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 551.22 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 110.2 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 158.08 ms. Allocated memory is still 156.2 MB. Free memory was 110.2 MB in the beginning and 106.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1267.73 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 106.1 MB in the beginning and 152.9 MB in the end (delta: -46.8 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 77695.83 ms. Allocated memory was 187.7 MB in the beginning and 960.5 MB in the end (delta: 772.8 MB). Free memory was 152.4 MB in the beginning and 899.3 MB in the end (delta: -746.9 MB). Peak memory consumption was 580.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 948]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L509] int cleanupTimeShifts = 4; [L650] int methAndRunningLastTime ; [L759] int pumpRunning = 0; [L760] int systemActive = 1; [L590] int retValue_acc ; [L591] int tmp ; [L595] FCALL select_helpers() [L596] FCALL select_features() [L597] CALL, EXPR valid_product() [L639] int retValue_acc ; [L642] retValue_acc = 1 [L643] return (retValue_acc); [L597] RET, EXPR valid_product() [L597] tmp = valid_product() [L599] COND TRUE \read(tmp) [L601] FCALL setup() [L602] CALL runTest() [L580] CALL __utac_acc__Specification2_spec__1() [L655] methAndRunningLastTime = 0 [L580] RET __utac_acc__Specification2_spec__1() [L581] CALL test() [L691] int splverifierCounter ; [L692] int tmp ; [L693] int tmp___0 ; [L694] int tmp___1 ; [L695] int tmp___2 ; [L698] splverifierCounter = 0 [L700] COND TRUE 1 [L702] COND TRUE splverifierCounter < 4 [L708] tmp = __VERIFIER_nondet_int() [L710] COND TRUE \read(tmp) [L712] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L712] RET waterRise() [L718] tmp___0 = __VERIFIER_nondet_int() [L720] COND FALSE !(\read(tmp___0)) [L728] tmp___2 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___2) [L745] CALL timeShift() [L766] COND FALSE !(\read(pumpRunning)) [L773] COND TRUE \read(systemActive) [L775] CALL processEnvironment() [L795] int tmp ; [L798] COND TRUE ! pumpRunning [L800] CALL, EXPR isHighWaterLevel() [L910] int retValue_acc ; [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L916] RET, EXPR isHighWaterSensorDry() [L916] tmp = isHighWaterSensorDry() [L918] COND FALSE !(\read(tmp)) [L921] tmp___0 = 1 [L923] retValue_acc = tmp___0 [L924] return (retValue_acc); [L800] RET, EXPR isHighWaterLevel() [L800] tmp = isHighWaterLevel() [L802] COND TRUE \read(tmp) [L804] CALL activatePump() [L829] int tmp ; [L833] CALL, EXPR isMethaneAlarm() [L854] int retValue_acc ; [L858] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] retValue_acc = isMethaneLevelCritical() [L860] return (retValue_acc); [L833] RET, EXPR isMethaneAlarm() [L833] tmp = isMethaneAlarm() [L835] COND FALSE !(\read(tmp)) [L839] CALL activatePump__wrappee__highWaterSensor() [L823] pumpRunning = 1 [L839] RET activatePump__wrappee__highWaterSensor() [L804] RET activatePump() [L775] RET processEnvironment() [L781] CALL __utac_acc__Specification2_spec__2() [L660] int tmp ; [L661] int tmp___0 ; [L665] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L665] RET, EXPR isMethaneLevelCritical() [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L683] methAndRunningLastTime = 0 [L781] RET __utac_acc__Specification2_spec__2() [L745] RET timeShift() [L700] COND TRUE 1 [L702] COND TRUE splverifierCounter < 4 [L708] tmp = __VERIFIER_nondet_int() [L710] COND FALSE !(\read(tmp)) [L718] tmp___0 = __VERIFIER_nondet_int() [L720] COND TRUE \read(tmp___0) [L722] CALL changeMethaneLevel() [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 [L722] RET changeMethaneLevel() [L728] tmp___2 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___2) [L745] CALL timeShift() [L766] COND TRUE \read(pumpRunning) [L768] CALL lowerWaterLevel() [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 [L768] RET lowerWaterLevel() [L773] COND TRUE \read(systemActive) [L775] CALL processEnvironment() [L795] int tmp ; [L798] COND FALSE !(! pumpRunning) [L813] FCALL processEnvironment__wrappee__base() [L775] RET processEnvironment() [L781] CALL __utac_acc__Specification2_spec__2() [L660] int tmp ; [L661] int tmp___0 ; [L665] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L665] RET, EXPR isMethaneLevelCritical() [L665] tmp = isMethaneLevelCritical() [L667] COND TRUE \read(tmp) [L669] CALL, EXPR isPumpRunning() [L865] int retValue_acc ; [L868] retValue_acc = pumpRunning [L869] return (retValue_acc); [L669] RET, EXPR isPumpRunning() [L669] tmp___0 = isPumpRunning() [L671] COND TRUE \read(tmp___0) [L672] COND TRUE \read(methAndRunningLastTime) [L674] CALL __automaton_fail() [L948] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 639 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 77.5s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 62.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2603 SDtfs, 8261 SDslu, 6294 SDs, 0 SdLazy, 13097 SolverSat, 2601 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 291 SyntacticMatches, 4 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 32.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2188occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 2624 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...