/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_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:59:18,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:59:18,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:59:18,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:59:18,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:59:18,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:59:18,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:59:18,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:59:18,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:59:18,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:59:18,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:59:18,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:59:18,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:59:18,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:59:18,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:59:18,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:59:18,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:59:18,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:59:18,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:59:18,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:59:18,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:59:18,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:59:18,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:59:18,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:59:18,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:59:18,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:59:18,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:59:18,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:59:18,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:59:18,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:59:18,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:59:18,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:59:18,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:59:18,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:59:18,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:59:18,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:59:18,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:59:18,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:59:18,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:59:18,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:59:18,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:59:18,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:59:18,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:59:18,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:59:18,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:59:18,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:59:18,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:59:18,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:59:18,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:59:18,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:59:18,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:59:18,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:59:18,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:59:18,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:59:18,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:59:18,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:59:18,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:59:18,409 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:59:18,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:59:18,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:59:18,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:59:18,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:59:18,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:59:18,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:59:18,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:59:18,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:59:18,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:59:18,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:59:18,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:59:18,871 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:59:18,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2021-02-23 16:59:18,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3397bccf7/6912763802ba4d81b0cd79e28e877dc3/FLAG173c047b4 [2021-02-23 16:59:19,767 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:59:19,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2021-02-23 16:59:19,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3397bccf7/6912763802ba4d81b0cd79e28e877dc3/FLAG173c047b4 [2021-02-23 16:59:20,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3397bccf7/6912763802ba4d81b0cd79e28e877dc3 [2021-02-23 16:59:20,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:59:20,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:59:20,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:59:20,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:59:20,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:59:20,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10814d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20, skipping insertion in model container [2021-02-23 16:59:20,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:59:20,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:59:20,466 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_spec4_product40.cil.c[5076,5089] [2021-02-23 16:59:20,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:59:20,577 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:59:20,613 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_spec4_product40.cil.c[5076,5089] [2021-02-23 16:59:20,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:59:20,787 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:59:20,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20 WrapperNode [2021-02-23 16:59:20,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:59:20,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:59:20,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:59:20,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:59:20,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (1/1) ... [2021-02-23 16:59:20,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:59:20,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:59:20,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:59:20,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:59:20,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (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 [2021-02-23 16:59:21,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:59:21,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:59:21,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:59:21,105 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:59:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:59:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:59:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:59:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:59:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:59:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:59:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:59:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:59:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:59:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:59:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:59:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:59:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:59:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:59:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:59:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:59:21,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:59:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:59:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:59:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:59:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:59:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:59:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:59:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:59:21,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:59:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:59:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:59:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:59:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:59:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:59:21,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:59:21,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:59:21,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:59:21,117 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:59:21,117 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:59:21,117 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:59:21,118 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:59:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:59:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:59:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:59:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:59:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:59:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:59:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:59:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:59:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:59:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:59:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:59:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:59:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:59:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:59:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:59:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:59:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:59:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:59:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:59:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:59:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:59:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:59:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:59:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:59:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:59:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:59:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:59:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:59:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:59:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:59:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:59:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:59:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:59:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:59:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:59:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:59:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:59:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:59:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:59:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:59:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:59:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:59:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:59:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:59:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:59:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:59:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:59:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:59:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:59:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:59:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:59:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:59:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:59:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:59:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:59:22,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:59:22,552 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:59:22,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:59:22 BoogieIcfgContainer [2021-02-23 16:59:22,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:59:22,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:59:22,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:59:22,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:59:22,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:59:20" (1/3) ... [2021-02-23 16:59:22,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e89e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:59:22, skipping insertion in model container [2021-02-23 16:59:22,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:20" (2/3) ... [2021-02-23 16:59:22,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e89e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:59:22, skipping insertion in model container [2021-02-23 16:59:22,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:59:22" (3/3) ... [2021-02-23 16:59:22,565 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2021-02-23 16:59:22,573 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:59:22,579 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:59:22,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:59:22,625 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:59:22,626 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:59:22,626 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:59:22,626 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:59:22,626 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:59:22,626 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:59:22,626 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:59:22,627 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:59:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-23 16:59:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:59:22,674 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:22,675 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] [2021-02-23 16:59:22,676 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:22,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1685471009, now seen corresponding path program 1 times [2021-02-23 16:59:22,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:22,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544362073] [2021-02-23 16:59:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:22,766 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:23,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,554 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:23,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:23,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:23,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:23,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:23,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:23,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:59:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:23,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:59:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:23,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:23,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:23,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544362073] [2021-02-23 16:59:23,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:23,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:59:23,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701785209] [2021-02-23 16:59:23,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:59:23,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:23,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:59:23,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:59:23,872 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-23 16:59:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:25,759 INFO L93 Difference]: Finished difference Result 506 states and 601 transitions. [2021-02-23 16:59:25,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:59:25,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:59:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:25,779 INFO L225 Difference]: With dead ends: 506 [2021-02-23 16:59:25,780 INFO L226 Difference]: Without dead ends: 314 [2021-02-23 16:59:25,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:59:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-02-23 16:59:25,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 270. [2021-02-23 16:59:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-02-23 16:59:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions. [2021-02-23 16:59:25,957 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 147 [2021-02-23 16:59:25,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:25,958 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 293 transitions. [2021-02-23 16:59:25,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:59:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions. [2021-02-23 16:59:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:59:25,964 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:25,964 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] [2021-02-23 16:59:25,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:59:25,964 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:25,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1715332996, now seen corresponding path program 1 times [2021-02-23 16:59:25,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:25,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878293490] [2021-02-23 16:59:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:25,970 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:26,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:26,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,471 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:26,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:26,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:26,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:26,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:26,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:59:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:26,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:59:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:26,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:26,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:26,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878293490] [2021-02-23 16:59:26,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:26,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:59:26,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759849710] [2021-02-23 16:59:26,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:59:26,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:26,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:59:26,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:59:26,639 INFO L87 Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 4 states. [2021-02-23 16:59:27,476 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:59:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:28,674 INFO L93 Difference]: Finished difference Result 412 states and 463 transitions. [2021-02-23 16:59:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:59:28,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:59:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:28,680 INFO L225 Difference]: With dead ends: 412 [2021-02-23 16:59:28,681 INFO L226 Difference]: Without dead ends: 297 [2021-02-23 16:59:28,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:59:28,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-02-23 16:59:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 260. [2021-02-23 16:59:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-23 16:59:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 280 transitions. [2021-02-23 16:59:28,860 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 280 transitions. Word has length 148 [2021-02-23 16:59:28,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:28,863 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 280 transitions. [2021-02-23 16:59:28,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:59:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 280 transitions. [2021-02-23 16:59:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:59:28,868 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:28,868 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] [2021-02-23 16:59:28,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:59:28,874 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:28,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2001740728, now seen corresponding path program 1 times [2021-02-23 16:59:28,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:28,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509646084] [2021-02-23 16:59:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:28,889 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:29,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:29,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:29,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,412 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:59:29,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:59:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:59:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:29,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:59:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:59:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:29,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:29,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:29,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509646084] [2021-02-23 16:59:29,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:29,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:59:29,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565846133] [2021-02-23 16:59:29,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:59:29,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:29,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:59:29,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:59:29,600 INFO L87 Difference]: Start difference. First operand 260 states and 280 transitions. Second operand 10 states. [2021-02-23 16:59:30,264 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:59:30,705 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:59:31,064 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:59:31,397 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:31,746 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:32,139 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:33,219 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:59:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:36,086 INFO L93 Difference]: Finished difference Result 705 states and 820 transitions. [2021-02-23 16:59:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:59:36,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:59:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:36,092 INFO L225 Difference]: With dead ends: 705 [2021-02-23 16:59:36,093 INFO L226 Difference]: Without dead ends: 560 [2021-02-23 16:59:36,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:59:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-02-23 16:59:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 465. [2021-02-23 16:59:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2021-02-23 16:59:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 519 transitions. [2021-02-23 16:59:36,342 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 519 transitions. Word has length 161 [2021-02-23 16:59:36,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:36,343 INFO L480 AbstractCegarLoop]: Abstraction has 465 states and 519 transitions. [2021-02-23 16:59:36,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:59:36,343 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 519 transitions. [2021-02-23 16:59:36,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:59:36,347 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:36,347 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] [2021-02-23 16:59:36,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:59:36,347 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:36,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1297897057, now seen corresponding path program 1 times [2021-02-23 16:59:36,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:36,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176415014] [2021-02-23 16:59:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:36,352 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:36,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:36,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:36,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:36,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:36,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:36,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:36,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:36,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:36,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:36,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:36,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:36,798 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:36,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:36,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:36,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:59:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:36,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:36,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:36,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:36,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:36,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:59:36,918 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:59:36,919 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:59:36,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:36,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:36,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:59:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:36,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:59:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:36,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:36,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:36,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:36,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:37,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:59:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:37,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176415014] [2021-02-23 16:59:37,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:37,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:59:37,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587046390] [2021-02-23 16:59:37,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:59:37,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:37,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:59:37,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:59:37,123 INFO L87 Difference]: Start difference. First operand 465 states and 519 transitions. Second operand 14 states. [2021-02-23 16:59:37,867 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:59:38,322 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:59:38,724 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:59:39,141 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:39,550 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:39,925 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:40,753 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:59:42,150 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:42,602 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:43,189 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:43,696 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:59:44,138 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:59:44,528 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:59:44,941 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:59:45,377 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:45,754 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:46,299 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:46,840 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:59:47,362 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:47,890 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:50,414 INFO L93 Difference]: Finished difference Result 1601 states and 2008 transitions. [2021-02-23 16:59:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:59:50,416 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 16:59:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:50,427 INFO L225 Difference]: With dead ends: 1601 [2021-02-23 16:59:50,427 INFO L226 Difference]: Without dead ends: 1251 [2021-02-23 16:59:50,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:59:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-02-23 16:59:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1112. [2021-02-23 16:59:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2021-02-23 16:59:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1312 transitions. [2021-02-23 16:59:50,988 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1312 transitions. Word has length 166 [2021-02-23 16:59:50,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:50,989 INFO L480 AbstractCegarLoop]: Abstraction has 1112 states and 1312 transitions. [2021-02-23 16:59:50,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:59:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1312 transitions. [2021-02-23 16:59:50,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:59:50,994 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:50,994 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] [2021-02-23 16:59:50,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:59:50,995 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:50,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1240889056, now seen corresponding path program 1 times [2021-02-23 16:59:50,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:50,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485167514] [2021-02-23 16:59:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:50,999 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:51,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:51,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:51,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:51,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:51,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:51,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,382 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:59:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:59:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:59:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:59:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:51,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:51,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:51,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485167514] [2021-02-23 16:59:51,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:51,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:59:51,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093798494] [2021-02-23 16:59:51,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:59:51,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:51,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:59:51,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:59:51,537 INFO L87 Difference]: Start difference. First operand 1112 states and 1312 transitions. Second operand 6 states. [2021-02-23 16:59:52,177 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:59:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:54,540 INFO L93 Difference]: Finished difference Result 2573 states and 3225 transitions. [2021-02-23 16:59:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 16:59:54,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 16:59:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:54,554 INFO L225 Difference]: With dead ends: 2573 [2021-02-23 16:59:54,555 INFO L226 Difference]: Without dead ends: 1576 [2021-02-23 16:59:54,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:59:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-02-23 16:59:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1449. [2021-02-23 16:59:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2021-02-23 16:59:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1705 transitions. [2021-02-23 16:59:55,451 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1705 transitions. Word has length 171 [2021-02-23 16:59:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:55,452 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 1705 transitions. [2021-02-23 16:59:55,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:59:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1705 transitions. [2021-02-23 16:59:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 16:59:55,461 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:55,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:59:55,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:59:55,463 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:55,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:55,464 INFO L82 PathProgramCache]: Analyzing trace with hash 651543223, now seen corresponding path program 1 times [2021-02-23 16:59:55,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:55,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22591494] [2021-02-23 16:59:55,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY