/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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:53:19,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:53:19,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:53:19,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:53:19,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:53:19,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:53:19,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:53:19,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:53:19,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:53:19,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:53:19,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:53:19,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:53:19,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:53:19,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:53:19,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:53:19,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:53:19,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:53:19,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:53:19,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:53:19,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:53:19,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:53:19,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:53:19,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:53:19,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:53:19,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:53:19,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:53:19,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:53:19,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:53:19,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:53:19,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-02-21 18:53:19,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:53:19,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:53:19,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:53:19,777 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 18:53:19,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:53:19,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:53:19,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:53:19,791 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:53:19,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:53:19,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:53:19,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:53:19,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:53:19,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:53:19,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:53:19,793 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:53:19,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:53:19,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:53:19,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:53:19,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:53:19,794 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:53:19,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:53:19,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:53:19,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:53:19,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:53:19,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:53:19,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:53:19,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:53:20,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:53:20,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:53:20,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:53:20,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:53:20,249 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:53:20,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2021-02-21 18:53:20,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25c7ed96c/0e04636ec7174b7ba71905d3cf419533/FLAG42a4e245c [2021-02-21 18:53:21,021 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:53:21,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2021-02-21 18:53:21,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25c7ed96c/0e04636ec7174b7ba71905d3cf419533/FLAG42a4e245c [2021-02-21 18:53:21,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25c7ed96c/0e04636ec7174b7ba71905d3cf419533 [2021-02-21 18:53:21,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:53:21,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:53:21,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:53:21,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:53:21,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:53:21,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:53:21" (1/1) ... [2021-02-21 18:53:21,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acaa6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:21, skipping insertion in model container [2021-02-21 18:53:21,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:53:21" (1/1) ... [2021-02-21 18:53:21,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:53:21,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:53:21,771 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_product55.cil.c[19088,19101] [2021-02-21 18:53:21,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:53:21,799 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:53:21,942 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_product55.cil.c[19088,19101] [2021-02-21 18:53:21,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:53:22,003 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:53:22,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22 WrapperNode [2021-02-21 18:53:22,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:53:22,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:53:22,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:53:22,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:53:22,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (1/1) ... [2021-02-21 18:53:22,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (1/1) ... [2021-02-21 18:53:22,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (1/1) ... [2021-02-21 18:53:22,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (1/1) ... [2021-02-21 18:53:22,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (1/1) ... [2021-02-21 18:53:22,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (1/1) ... [2021-02-21 18:53:22,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (1/1) ... [2021-02-21 18:53:22,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:53:22,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:53:22,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:53:22,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:53:22,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (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 18:53:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:53:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:53:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:53:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:53:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:53:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:53:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:53:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:53:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:53:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:53:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:53:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:53:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:53:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:53:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:53:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:53:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:53:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:53:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:53:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:53:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:53:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:53:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:53:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:53:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:53:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:53:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:53:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:53:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:53:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:53:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:53:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:53:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:53:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:53:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:53:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:53:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:53:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:53:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:53:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:53:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:53:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:53:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:53:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:53:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:53:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:53:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:53:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:53:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:53:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:53:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:53:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:53:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:53:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:53:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:53:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:53:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:53:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:53:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:53:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:53:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:53:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:53:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:53:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:53:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:53:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:53:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:53:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:53:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:53:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:53:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2021-02-21 18:53:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:53:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:53:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:53:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:53:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:53:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:53:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:53:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:53:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:53:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:53:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:53:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:53:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:53:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:53:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:53:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:53:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:53:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:53:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:53:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:53:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:53:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:53:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:53:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2021-02-21 18:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:53:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:53:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:53:23,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:53:23,724 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:53:23,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:53:23 BoogieIcfgContainer [2021-02-21 18:53:23,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:53:23,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:53:23,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:53:23,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:53:23,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:53:21" (1/3) ... [2021-02-21 18:53:23,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5305f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:53:23, skipping insertion in model container [2021-02-21 18:53:23,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:53:22" (2/3) ... [2021-02-21 18:53:23,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5305f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:53:23, skipping insertion in model container [2021-02-21 18:53:23,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:53:23" (3/3) ... [2021-02-21 18:53:23,744 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2021-02-21 18:53:23,751 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:53:23,758 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:53:23,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:53:23,817 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:53:23,817 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:53:23,818 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:53:23,818 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:53:23,818 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:53:23,818 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:53:23,818 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:53:23,818 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:53:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2021-02-21 18:53:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-02-21 18:53:23,892 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:23,894 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 18:53:23,895 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:23,905 INFO L82 PathProgramCache]: Analyzing trace with hash 945962918, now seen corresponding path program 1 times [2021-02-21 18:53:23,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:23,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034722787] [2021-02-21 18:53:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:24,007 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,730 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:53:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:53:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:24,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:24,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:24,961 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 18:53:24,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034722787] [2021-02-21 18:53:24,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:24,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:53:24,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632837808] [2021-02-21 18:53:24,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:53:24,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:24,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:53:24,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:53:24,988 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 4 states. [2021-02-21 18:53:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:26,843 INFO L93 Difference]: Finished difference Result 565 states and 671 transitions. [2021-02-21 18:53:26,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 18:53:26,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2021-02-21 18:53:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:26,863 INFO L225 Difference]: With dead ends: 565 [2021-02-21 18:53:26,863 INFO L226 Difference]: Without dead ends: 353 [2021-02-21 18:53:26,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:53:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-02-21 18:53:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 301. [2021-02-21 18:53:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2021-02-21 18:53:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 331 transitions. [2021-02-21 18:53:27,082 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 331 transitions. Word has length 153 [2021-02-21 18:53:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:27,083 INFO L480 AbstractCegarLoop]: Abstraction has 301 states and 331 transitions. [2021-02-21 18:53:27,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:53:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 331 transitions. [2021-02-21 18:53:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-21 18:53:27,087 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:27,087 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 18:53:27,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:53:27,088 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:27,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1242306507, now seen corresponding path program 1 times [2021-02-21 18:53:27,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:27,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630022187] [2021-02-21 18:53:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:27,093 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:27,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,487 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:27,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-21 18:53:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:53:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:27,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:27,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:27,612 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 18:53:27,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630022187] [2021-02-21 18:53:27,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:27,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 18:53:27,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830140609] [2021-02-21 18:53:27,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 18:53:27,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 18:53:27,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:53:27,617 INFO L87 Difference]: Start difference. First operand 301 states and 331 transitions. Second operand 5 states. [2021-02-21 18:53:28,396 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:29,920 INFO L93 Difference]: Finished difference Result 487 states and 557 transitions. [2021-02-21 18:53:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 18:53:29,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2021-02-21 18:53:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:29,926 INFO L225 Difference]: With dead ends: 487 [2021-02-21 18:53:29,926 INFO L226 Difference]: Without dead ends: 342 [2021-02-21 18:53:29,928 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 18:53:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-02-21 18:53:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 291. [2021-02-21 18:53:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2021-02-21 18:53:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 318 transitions. [2021-02-21 18:53:30,049 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 318 transitions. Word has length 154 [2021-02-21 18:53:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:30,050 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 318 transitions. [2021-02-21 18:53:30,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 18:53:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 318 transitions. [2021-02-21 18:53:30,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-02-21 18:53:30,052 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:30,053 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 18:53:30,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:53:30,053 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:30,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:30,054 INFO L82 PathProgramCache]: Analyzing trace with hash 270491482, now seen corresponding path program 1 times [2021-02-21 18:53:30,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:30,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524315361] [2021-02-21 18:53:30,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:30,058 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:30,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:30,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:30,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:30,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:53:30,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:53:30,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:53:30,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,492 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:53:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:30,601 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:53:30,602 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:53:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:53:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:53:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:30,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:30,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:30,741 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 18:53:30,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524315361] [2021-02-21 18:53:30,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:30,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:53:30,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522631453] [2021-02-21 18:53:30,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:53:30,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:30,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:53:30,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:53:30,744 INFO L87 Difference]: Start difference. First operand 291 states and 318 transitions. Second operand 10 states. [2021-02-21 18:53:31,523 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:31,970 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:53:32,406 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:32,834 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:33,217 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:33,595 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:34,742 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:37,910 INFO L93 Difference]: Finished difference Result 782 states and 913 transitions. [2021-02-21 18:53:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:53:37,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2021-02-21 18:53:37,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:37,918 INFO L225 Difference]: With dead ends: 782 [2021-02-21 18:53:37,918 INFO L226 Difference]: Without dead ends: 611 [2021-02-21 18:53:37,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:53:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-02-21 18:53:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 530. [2021-02-21 18:53:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2021-02-21 18:53:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 599 transitions. [2021-02-21 18:53:38,151 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 599 transitions. Word has length 163 [2021-02-21 18:53:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:38,152 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 599 transitions. [2021-02-21 18:53:38,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:53:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 599 transitions. [2021-02-21 18:53:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:53:38,156 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:38,156 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 18:53:38,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:53:38,157 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:38,158 INFO L82 PathProgramCache]: Analyzing trace with hash -34341052, now seen corresponding path program 1 times [2021-02-21 18:53:38,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:38,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468101421] [2021-02-21 18:53:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:38,161 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,564 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:38,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 18:53:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:53:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:38,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:53:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:38,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:38,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:38,777 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 18:53:38,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468101421] [2021-02-21 18:53:38,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:38,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:53:38,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872746455] [2021-02-21 18:53:38,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:53:38,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:38,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:53:38,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:53:38,785 INFO L87 Difference]: Start difference. First operand 530 states and 599 transitions. Second operand 10 states. [2021-02-21 18:53:39,444 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:40,861 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:41,298 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:41,883 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:42,261 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:43,014 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:43,449 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:43,865 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:44,593 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:46,317 INFO L93 Difference]: Finished difference Result 1479 states and 1791 transitions. [2021-02-21 18:53:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 18:53:46,319 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:53:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:46,329 INFO L225 Difference]: With dead ends: 1479 [2021-02-21 18:53:46,329 INFO L226 Difference]: Without dead ends: 1069 [2021-02-21 18:53:46,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-02-21 18:53:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-02-21 18:53:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 892. [2021-02-21 18:53:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2021-02-21 18:53:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1022 transitions. [2021-02-21 18:53:46,675 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1022 transitions. Word has length 172 [2021-02-21 18:53:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:46,675 INFO L480 AbstractCegarLoop]: Abstraction has 892 states and 1022 transitions. [2021-02-21 18:53:46,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:53:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1022 transitions. [2021-02-21 18:53:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:53:46,680 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:46,680 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 18:53:46,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:53:46,681 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:46,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1722204717, now seen corresponding path program 1 times [2021-02-21 18:53:46,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:46,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897771418] [2021-02-21 18:53:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:46,685 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:46,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:46,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:46,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:46,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:46,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:46,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:46,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:46,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:46,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:46,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,092 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:53:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 18:53:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:47,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:53:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:53:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:47,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:47,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:47,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:47,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:47,290 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 18:53:47,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897771418] [2021-02-21 18:53:47,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:47,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:53:47,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947562619] [2021-02-21 18:53:47,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:53:47,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:47,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:53:47,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:53:47,295 INFO L87 Difference]: Start difference. First operand 892 states and 1022 transitions. Second operand 11 states. [2021-02-21 18:53:47,988 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:49,625 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:50,028 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:50,451 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:50,903 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:53:51,317 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:52,323 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:53:52,703 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:53,216 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:53:55,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:53:55,252 INFO L93 Difference]: Finished difference Result 2275 states and 2834 transitions. [2021-02-21 18:53:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 18:53:55,253 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2021-02-21 18:53:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:53:55,264 INFO L225 Difference]: With dead ends: 2275 [2021-02-21 18:53:55,264 INFO L226 Difference]: Without dead ends: 1503 [2021-02-21 18:53:55,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 18:53:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-02-21 18:53:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1214. [2021-02-21 18:53:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2021-02-21 18:53:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1392 transitions. [2021-02-21 18:53:55,781 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1392 transitions. Word has length 177 [2021-02-21 18:53:55,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:53:55,781 INFO L480 AbstractCegarLoop]: Abstraction has 1214 states and 1392 transitions. [2021-02-21 18:53:55,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:53:55,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1392 transitions. [2021-02-21 18:53:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-02-21 18:53:55,786 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:53:55,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:55,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:53:55,787 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:53:55,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:53:55,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1128100947, now seen corresponding path program 1 times [2021-02-21 18:53:55,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:53:55,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986575459] [2021-02-21 18:53:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:53:55,791 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:53:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:55,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:55,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:55,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,169 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:53:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:53:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:53:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:53:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:53:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:53:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:53:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:53:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:53:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:56,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:53:56,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:53:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:56,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:56,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:53:56,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:53:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:53:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:53:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-21 18:53:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:53:56,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:53:56,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:53:56,412 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 18:53:56,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986575459] [2021-02-21 18:53:56,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:53:56,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:53:56,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10597165] [2021-02-21 18:53:56,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:53:56,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:53:56,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:53:56,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:53:56,415 INFO L87 Difference]: Start difference. First operand 1214 states and 1392 transitions. Second operand 11 states. [2021-02-21 18:53:58,270 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:53:58,701 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:53:59,138 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2021-02-21 18:53:59,583 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:00,027 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:00,432 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:02,639 INFO L93 Difference]: Finished difference Result 2739 states and 3355 transitions. [2021-02-21 18:54:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:54:02,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 211 [2021-02-21 18:54:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:02,651 INFO L225 Difference]: With dead ends: 2739 [2021-02-21 18:54:02,651 INFO L226 Difference]: Without dead ends: 1645 [2021-02-21 18:54:02,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:54:02,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2021-02-21 18:54:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1252. [2021-02-21 18:54:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2021-02-21 18:54:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1432 transitions. [2021-02-21 18:54:03,355 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1432 transitions. Word has length 211 [2021-02-21 18:54:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:03,356 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 1432 transitions. [2021-02-21 18:54:03,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:54:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1432 transitions. [2021-02-21 18:54:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-02-21 18:54:03,361 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:03,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:54:03,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:54:03,362 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1065772211, now seen corresponding path program 1 times [2021-02-21 18:54:03,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:03,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442254302] [2021-02-21 18:54:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:03,365 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:03,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:03,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,790 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:54:03,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:54:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:54:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:54:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:03,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:54:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:54:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:54:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:54:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:03,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:03,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:04,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:04,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:54:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:04,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:04,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:54:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:54:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-21 18:54:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:04,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:04,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:04,133 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 18:54:04,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442254302] [2021-02-21 18:54:04,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:04,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 18:54:04,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622426729] [2021-02-21 18:54:04,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 18:54:04,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:04,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 18:54:04,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-21 18:54:04,135 INFO L87 Difference]: Start difference. First operand 1252 states and 1432 transitions. Second operand 14 states. [2021-02-21 18:54:04,912 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:54:05,313 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:54:05,717 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:06,131 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:06,549 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:07,756 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:08,140 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:08,574 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:09,028 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:54:09,422 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:11,894 INFO L93 Difference]: Finished difference Result 2821 states and 3500 transitions. [2021-02-21 18:54:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 18:54:11,894 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 211 [2021-02-21 18:54:11,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:11,913 INFO L225 Difference]: With dead ends: 2821 [2021-02-21 18:54:11,913 INFO L226 Difference]: Without dead ends: 1689 [2021-02-21 18:54:11,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-21 18:54:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-02-21 18:54:12,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1276. [2021-02-21 18:54:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2021-02-21 18:54:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1456 transitions. [2021-02-21 18:54:12,653 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1456 transitions. Word has length 211 [2021-02-21 18:54:12,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:12,654 INFO L480 AbstractCegarLoop]: Abstraction has 1276 states and 1456 transitions. [2021-02-21 18:54:12,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 18:54:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1456 transitions. [2021-02-21 18:54:12,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-02-21 18:54:12,660 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:12,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:54:12,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:54:12,661 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1089289168, now seen corresponding path program 1 times [2021-02-21 18:54:12,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:12,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497813155] [2021-02-21 18:54:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:12,665 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:12,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:12,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:12,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:12,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:12,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:54:12,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:12,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,086 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:54:13,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:54:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:54:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:54:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:54:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:54:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:54:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-02-21 18:54:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:54:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:54:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:54:13,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:54:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:54:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:54:13,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:54:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:54:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-02-21 18:54:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:13,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:13,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:13,342 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 18:54:13,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497813155] [2021-02-21 18:54:13,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:13,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:54:13,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697495077] [2021-02-21 18:54:13,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:54:13,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:13,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:54:13,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:54:13,344 INFO L87 Difference]: Start difference. First operand 1276 states and 1456 transitions. Second operand 8 states. [2021-02-21 18:54:14,022 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:54:14,743 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:54:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:19,274 INFO L93 Difference]: Finished difference Result 4212 states and 5255 transitions. [2021-02-21 18:54:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 18:54:19,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2021-02-21 18:54:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:19,293 INFO L225 Difference]: With dead ends: 4212 [2021-02-21 18:54:19,293 INFO L226 Difference]: Without dead ends: 3056 [2021-02-21 18:54:19,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2021-02-21 18:54:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2021-02-21 18:54:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2484. [2021-02-21 18:54:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2021-02-21 18:54:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 2866 transitions. [2021-02-21 18:54:20,596 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 2866 transitions. Word has length 211 [2021-02-21 18:54:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:20,597 INFO L480 AbstractCegarLoop]: Abstraction has 2484 states and 2866 transitions. [2021-02-21 18:54:20,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:54:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 2866 transitions. [2021-02-21 18:54:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-02-21 18:54:20,602 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:20,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:54:20,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:54:20,602 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:20,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1838356986, now seen corresponding path program 1 times [2021-02-21 18:54:20,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:20,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731261419] [2021-02-21 18:54:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:20,606 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:20,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:20,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:20,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:20,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:20,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:20,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:20,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,014 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:54:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-02-21 18:54:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-02-21 18:54:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-02-21 18:54:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-02-21 18:54:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 18:54:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:21,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:54:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:54:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:54:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:54:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:54:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:54:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-02-21 18:54:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-02-21 18:54:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:21,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:21,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:21,253 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 18:54:21,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731261419] [2021-02-21 18:54:21,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:21,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:54:21,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009288985] [2021-02-21 18:54:21,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:54:21,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:54:21,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:54:21,255 INFO L87 Difference]: Start difference. First operand 2484 states and 2866 transitions. Second operand 8 states. [2021-02-21 18:54:21,983 WARN L202 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:54:26,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:26,512 INFO L93 Difference]: Finished difference Result 4981 states and 6242 transitions. [2021-02-21 18:54:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 18:54:26,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2021-02-21 18:54:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:26,542 INFO L225 Difference]: With dead ends: 4981 [2021-02-21 18:54:26,542 INFO L226 Difference]: Without dead ends: 4978 [2021-02-21 18:54:26,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2021-02-21 18:54:26,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4978 states. [2021-02-21 18:54:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4978 to 4023. [2021-02-21 18:54:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4023 states. [2021-02-21 18:54:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 4744 transitions. [2021-02-21 18:54:28,656 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 4744 transitions. Word has length 216 [2021-02-21 18:54:28,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:28,657 INFO L480 AbstractCegarLoop]: Abstraction has 4023 states and 4744 transitions. [2021-02-21 18:54:28,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:54:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 4744 transitions. [2021-02-21 18:54:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-02-21 18:54:28,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:28,671 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, 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, 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] [2021-02-21 18:54:28,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:54:28,672 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:28,672 INFO L82 PathProgramCache]: Analyzing trace with hash -707953834, now seen corresponding path program 1 times [2021-02-21 18:54:28,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:28,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077061484] [2021-02-21 18:54:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:28,751 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-21 18:54:28,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:28,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:28,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,125 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:29,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:54:29,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,560 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:29,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 18:54:29,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,907 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:29,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 18:54:29,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:29,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:29,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:30,332 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:30,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 18:54:30,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:30,665 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-21 18:54:30,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-02-21 18:54:30,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:30,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,034 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:31,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 18:54:31,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,440 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:31,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:54:31,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:31,841 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:31,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:31,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 18:54:32,186 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:32,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:32,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 18:54:32,537 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:32,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:32,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-21 18:54:32,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:32,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:32,892 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:32,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:32,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 18:54:33,220 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:33,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-02-21 18:54:33,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:33,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:33,593 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-21 18:54:33,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-02-21 18:54:33,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:33,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:33,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:33,968 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-21 18:54:33,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-21 18:54:33,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:33,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,394 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2021-02-21 18:54:34,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-21 18:54:34,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,814 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-02-21 18:54:34,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-02-21 18:54:34,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:34,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:34,863 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 18:54:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:54:35,292 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:54:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:54:35,575 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:54:36,070 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:54:36,070 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:54:36,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:54:36,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:54:36 BoogieIcfgContainer [2021-02-21 18:54:36,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:54:36,102 INFO L168 Benchmark]: Toolchain (without parser) took 74831.60 ms. Allocated memory was 151.0 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 126.8 MB in the beginning and 1.0 GB in the end (delta: -904.4 MB). Peak memory consumption was 329.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:36,103 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:54:36,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:36,103 INFO L168 Benchmark]: Boogie Preprocessor took 155.83 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 99.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:36,103 INFO L168 Benchmark]: RCFGBuilder took 1567.88 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 99.6 MB in the beginning and 156.5 MB in the end (delta: -57.0 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:36,103 INFO L168 Benchmark]: TraceAbstraction took 72369.54 ms. Allocated memory was 196.1 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 156.1 MB in the beginning and 1.0 GB in the end (delta: -875.1 MB). Peak memory consumption was 312.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:54:36,104 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 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 716.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 155.83 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 99.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1567.88 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 99.6 MB in the beginning and 156.5 MB in the end (delta: -57.0 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 72369.54 ms. Allocated memory was 196.1 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 156.1 MB in the beginning and 1.0 GB in the end (delta: -875.1 MB). Peak memory consumption was 312.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L265] int pumpRunning = 0; [L266] int systemActive = 1; [L673] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L871] int methAndRunningLastTime ; [L910] int cleanupTimeShifts = 4; [L984] int retValue_acc ; [L985] int tmp ; [L989] FCALL select_helpers() [L990] FCALL select_features() [L991] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L991] RET, EXPR valid_product() [L991] tmp = valid_product() [L993] COND TRUE \read(tmp) [L995] FCALL setup() [L996] CALL runTest() [L977] CALL __utac_acc__Specification2_spec__1() [L876] methAndRunningLastTime = 0 [L977] RET __utac_acc__Specification2_spec__1() [L978] CALL test() [L195] int splverifierCounter ; [L196] int tmp ; [L197] int tmp___0 ; [L198] int tmp___1 ; [L199] int tmp___2 ; [L202] splverifierCounter = 0 [L204] COND TRUE 1 [L206] COND TRUE splverifierCounter < 4 [L212] tmp = __VERIFIER_nondet_int() [L214] COND TRUE \read(tmp) [L216] CALL waterRise() [L106] COND TRUE waterLevel < 2 [L107] waterLevel = waterLevel + 1 [L216] RET waterRise() [L222] tmp___0 = __VERIFIER_nondet_int() [L224] COND TRUE \read(tmp___0) [L226] CALL changeMethaneLevel() [L118] COND FALSE !(\read(methaneLevelCritical)) [L121] methaneLevelCritical = 1 [L226] RET changeMethaneLevel() [L232] tmp___2 = __VERIFIER_nondet_int() [L234] COND TRUE \read(tmp___2) [L249] CALL timeShift() [L273] COND FALSE !(\read(pumpRunning)) [L280] COND TRUE \read(systemActive) [L282] CALL processEnvironment() [L354] int tmp ; [L357] COND FALSE !(\read(pumpRunning)) [L372] CALL processEnvironment__wrappee__lowWaterSensor() [L328] int tmp ; [L331] COND FALSE !(\read(pumpRunning)) [L346] CALL processEnvironment__wrappee__highWaterSensor() [L302] int tmp ; [L305] COND TRUE ! pumpRunning [L307] CALL, EXPR isHighWaterLevel() [L451] int retValue_acc ; [L452] int tmp ; [L453] int tmp___0 ; [L457] CALL, EXPR isHighWaterSensorDry() [L168] int retValue_acc ; [L171] COND FALSE !(waterLevel < 2) [L175] retValue_acc = 0 [L176] return (retValue_acc); [L457] RET, EXPR isHighWaterSensorDry() [L457] tmp = isHighWaterSensorDry() [L459] COND FALSE !(\read(tmp)) [L462] tmp___0 = 1 [L464] retValue_acc = tmp___0 [L465] return (retValue_acc); [L307] RET, EXPR isHighWaterLevel() [L307] tmp = isHighWaterLevel() [L309] COND TRUE \read(tmp) [L311] CALL activatePump() [L382] pumpRunning = 1 [L311] RET activatePump() [L346] RET processEnvironment__wrappee__highWaterSensor() [L372] RET processEnvironment__wrappee__lowWaterSensor() [L282] RET processEnvironment() [L288] CALL __utac_acc__Specification2_spec__2() [L881] int tmp ; [L882] int tmp___0 ; [L886] CALL, EXPR isMethaneLevelCritical() [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L886] RET, EXPR isMethaneLevelCritical() [L886] tmp = isMethaneLevelCritical() [L888] COND TRUE \read(tmp) [L890] CALL, EXPR isPumpRunning() [L406] int retValue_acc ; [L409] retValue_acc = pumpRunning [L410] return (retValue_acc); [L890] RET, EXPR isPumpRunning() [L890] tmp___0 = isPumpRunning() [L892] COND TRUE \read(tmp___0) [L893] COND FALSE !(\read(methAndRunningLastTime)) [L898] methAndRunningLastTime = 1 [L288] RET __utac_acc__Specification2_spec__2() [L249] RET timeShift() [L204] COND TRUE 1 [L206] COND TRUE splverifierCounter < 4 [L212] tmp = __VERIFIER_nondet_int() [L214] COND FALSE !(\read(tmp)) [L222] tmp___0 = __VERIFIER_nondet_int() [L224] COND FALSE !(\read(tmp___0)) [L232] tmp___2 = __VERIFIER_nondet_int() [L234] COND TRUE \read(tmp___2) [L249] CALL timeShift() [L273] COND FALSE !(\read(pumpRunning)) [L280] COND TRUE \read(systemActive) [L282] CALL processEnvironment() [L354] int tmp ; [L357] COND FALSE !(\read(pumpRunning)) [L372] CALL processEnvironment__wrappee__lowWaterSensor() [L328] int tmp ; [L331] COND FALSE !(\read(pumpRunning)) [L346] CALL processEnvironment__wrappee__highWaterSensor() [L302] int tmp ; [L305] COND TRUE ! pumpRunning [L307] CALL, EXPR isHighWaterLevel() [L451] int retValue_acc ; [L452] int tmp ; [L453] int tmp___0 ; [L457] CALL, EXPR isHighWaterSensorDry() [L168] int retValue_acc ; [L171] COND FALSE !(waterLevel < 2) [L175] retValue_acc = 0 [L176] return (retValue_acc); [L457] RET, EXPR isHighWaterSensorDry() [L457] tmp = isHighWaterSensorDry() [L459] COND FALSE !(\read(tmp)) [L462] tmp___0 = 1 [L464] retValue_acc = tmp___0 [L465] return (retValue_acc); [L307] RET, EXPR isHighWaterLevel() [L307] tmp = isHighWaterLevel() [L309] COND TRUE \read(tmp) [L311] CALL activatePump() [L382] pumpRunning = 1 [L311] RET activatePump() [L346] RET processEnvironment__wrappee__highWaterSensor() [L372] RET processEnvironment__wrappee__lowWaterSensor() [L282] RET processEnvironment() [L288] CALL __utac_acc__Specification2_spec__2() [L881] int tmp ; [L882] int tmp___0 ; [L886] CALL, EXPR isMethaneLevelCritical() [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L886] RET, EXPR isMethaneLevelCritical() [L886] tmp = isMethaneLevelCritical() [L888] COND TRUE \read(tmp) [L890] CALL, EXPR isPumpRunning() [L406] int retValue_acc ; [L409] retValue_acc = pumpRunning [L410] return (retValue_acc); [L890] RET, EXPR isPumpRunning() [L890] tmp___0 = isPumpRunning() [L892] COND TRUE \read(tmp___0) [L893] COND TRUE \read(methAndRunningLastTime) [L895] CALL __automaton_fail() [L1011] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 673 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 72.2s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 52.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2548 SDtfs, 7179 SDslu, 4608 SDs, 0 SdLazy, 10711 SolverSat, 2379 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 435 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 20.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4023occurred 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: 6.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 2983 StatesRemovedByMinimization, 9 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...