/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:12:26,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:12:26,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:12:26,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:12:26,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:12:26,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:12:26,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:12:26,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:12:26,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:12:26,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:12:26,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:12:26,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:12:26,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:12:26,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:12:26,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:12:26,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:12:26,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:12:26,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:12:26,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:12:26,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:12:26,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:12:26,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:12:26,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:12:26,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:12:26,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:12:26,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:12:26,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:12:26,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:12:26,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:12:26,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:12:26,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:12:26,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:12:26,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:12:26,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:12:26,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:12:26,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:12:26,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:12:26,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:12:26,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:12:26,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:12:26,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:12:26,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:12:26,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:12:26,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:12:26,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:12:26,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:12:26,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:12:26,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:12:26,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:12:26,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:12:26,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:12:26,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:12:26,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:12:26,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:12:26,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:12:26,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:12:26,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:12:26,791 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:12:26,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:12:26,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:12:26,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:12:26,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:12:26,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:12:26,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:12:26,793 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:12:26,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:12:27,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:12:27,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:12:27,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:12:27,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:12:27,281 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:12:27,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2021-02-22 01:12:27,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17ddfc08/d2786e6458854881a622f1112c5e5c54/FLAG83b32d35c [2021-02-22 01:12:28,118 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:12:28,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2021-02-22 01:12:28,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17ddfc08/d2786e6458854881a622f1112c5e5c54/FLAG83b32d35c [2021-02-22 01:12:28,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17ddfc08/d2786e6458854881a622f1112c5e5c54 [2021-02-22 01:12:28,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:12:28,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:12:28,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:12:28,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:12:28,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:12:28,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:12:28" (1/1) ... [2021-02-22 01:12:28,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552f9020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:28, skipping insertion in model container [2021-02-22 01:12:28,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:12:28" (1/1) ... [2021-02-22 01:12:28,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:12:28,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:12:28,790 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c[16936,16949] [2021-02-22 01:12:28,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:12:28,806 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:12:28,975 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c[16936,16949] [2021-02-22 01:12:28,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:12:29,016 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:12:29,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29 WrapperNode [2021-02-22 01:12:29,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:12:29,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:12:29,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:12:29,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:12:29,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (1/1) ... [2021-02-22 01:12:29,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (1/1) ... [2021-02-22 01:12:29,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (1/1) ... [2021-02-22 01:12:29,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (1/1) ... [2021-02-22 01:12:29,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (1/1) ... [2021-02-22 01:12:29,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (1/1) ... [2021-02-22 01:12:29,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (1/1) ... [2021-02-22 01:12:29,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:12:29,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:12:29,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:12:29,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:12:29,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (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 [2021-02-22 01:12:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:12:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:12:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:12:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:12:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:12:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:12:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:12:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:12:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:12:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:12:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:12:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:12:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:12:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:12:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:12:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:12:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:12:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:12:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:12:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:12:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:12:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:12:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:12:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:12:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:12:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:12:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 01:12:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:12:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:12:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:12:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:12:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:12:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:12:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:12:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:12:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 01:12:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:12:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-22 01:12:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:12:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:12:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:12:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:12:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:12:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:12:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:12:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:12:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:12:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:12:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:12:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:12:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:12:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:12:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:12:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:12:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:12:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:12:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:12:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:12:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:12:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:12:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:12:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:12:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:12:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:12:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:12:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:12:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:12:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:12:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:12:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:12:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:12:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:12:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:12:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:12:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:12:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:12:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:12:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 01:12:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:12:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:12:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:12:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-22 01:12:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:12:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:12:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 01:12:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:12:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:12:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:12:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:12:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:12:30,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:12:30,354 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:12:30,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:12:30 BoogieIcfgContainer [2021-02-22 01:12:30,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:12:30,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:12:30,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:12:30,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:12:30,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:12:28" (1/3) ... [2021-02-22 01:12:30,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b751f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:12:30, skipping insertion in model container [2021-02-22 01:12:30,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:12:29" (2/3) ... [2021-02-22 01:12:30,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b751f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:12:30, skipping insertion in model container [2021-02-22 01:12:30,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:12:30" (3/3) ... [2021-02-22 01:12:30,367 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2021-02-22 01:12:30,374 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:12:30,380 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:12:30,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:12:30,428 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:12:30,429 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:12:30,429 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:12:30,429 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:12:30,429 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:12:30,429 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:12:30,430 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:12:30,430 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:12:30,453 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2021-02-22 01:12:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-22 01:12:30,473 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:12:30,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:12:30,474 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:12:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:12:30,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1202902043, now seen corresponding path program 1 times [2021-02-22 01:12:30,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:12:30,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376755398] [2021-02-22 01:12:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:12:30,579 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:12:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:31,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,289 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:12:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:12:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:31,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:12:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:31,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:12:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:31,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:12:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:31,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:12:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:31,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-22 01:12:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:31,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-22 01:12:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:31,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:31,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:12:31,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376755398] [2021-02-22 01:12:31,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:12:31,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:12:31,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722975358] [2021-02-22 01:12:31,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:12:31,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:12:31,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:12:31,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:12:31,538 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2021-02-22 01:12:33,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:12:33,067 INFO L93 Difference]: Finished difference Result 425 states and 507 transitions. [2021-02-22 01:12:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:12:33,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-22 01:12:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:12:33,096 INFO L225 Difference]: With dead ends: 425 [2021-02-22 01:12:33,097 INFO L226 Difference]: Without dead ends: 271 [2021-02-22 01:12:33,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:12:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-02-22 01:12:33,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 232. [2021-02-22 01:12:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2021-02-22 01:12:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 250 transitions. [2021-02-22 01:12:33,284 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 250 transitions. Word has length 147 [2021-02-22 01:12:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:12:33,285 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 250 transitions. [2021-02-22 01:12:33,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:12:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 250 transitions. [2021-02-22 01:12:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-22 01:12:33,290 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:12:33,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:12:33,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:12:33,291 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:12:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:12:33,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2017654119, now seen corresponding path program 1 times [2021-02-22 01:12:33,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:12:33,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13180607] [2021-02-22 01:12:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:12:33,298 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:12:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:33,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:33,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,787 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:12:33,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:12:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:33,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:12:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:33,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:12:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:33,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:12:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:33,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:12:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:33,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:12:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:33,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:12:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:33,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:33,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:12:33,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13180607] [2021-02-22 01:12:33,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:12:33,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:12:33,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484891815] [2021-02-22 01:12:33,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:12:33,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:12:33,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:12:33,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:12:33,939 INFO L87 Difference]: Start difference. First operand 232 states and 250 transitions. Second operand 4 states. [2021-02-22 01:12:34,689 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:12:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:12:35,526 INFO L93 Difference]: Finished difference Result 341 states and 381 transitions. [2021-02-22 01:12:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:12:35,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-22 01:12:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:12:35,532 INFO L225 Difference]: With dead ends: 341 [2021-02-22 01:12:35,532 INFO L226 Difference]: Without dead ends: 254 [2021-02-22 01:12:35,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:12:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-22 01:12:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-02-22 01:12:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-02-22 01:12:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2021-02-22 01:12:35,624 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 148 [2021-02-22 01:12:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:12:35,625 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2021-02-22 01:12:35,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:12:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2021-02-22 01:12:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-22 01:12:35,627 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:12:35,628 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] [2021-02-22 01:12:35,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:12:35,628 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:12:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:12:35,629 INFO L82 PathProgramCache]: Analyzing trace with hash 384793059, now seen corresponding path program 1 times [2021-02-22 01:12:35,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:12:35,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376438960] [2021-02-22 01:12:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:12:35,633 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:12:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:35,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:35,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:35,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:35,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:35,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:35,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:35,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:35,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:12:35,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:35,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:36,098 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:12:36,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:12:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:36,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:36,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:12:36,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:12:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:36,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:12:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:36,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:12:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:36,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:36,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:12:36,227 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-22 01:12:36,228 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-22 01:12:36,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:12:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:36,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:36,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-22 01:12:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:36,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:36,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:12:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:36,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:36,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:12:36,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376438960] [2021-02-22 01:12:36,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:12:36,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:12:36,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467649100] [2021-02-22 01:12:36,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:12:36,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:12:36,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:12:36,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:12:36,344 INFO L87 Difference]: Start difference. First operand 222 states and 237 transitions. Second operand 9 states. [2021-02-22 01:12:37,107 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:12:37,579 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:12:37,934 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:12:38,373 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:12:38,742 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:12:39,132 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:12:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:12:40,511 INFO L93 Difference]: Finished difference Result 361 states and 406 transitions. [2021-02-22 01:12:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:12:40,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-22 01:12:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:12:40,515 INFO L225 Difference]: With dead ends: 361 [2021-02-22 01:12:40,515 INFO L226 Difference]: Without dead ends: 254 [2021-02-22 01:12:40,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:12:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-22 01:12:40,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-02-22 01:12:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-02-22 01:12:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 236 transitions. [2021-02-22 01:12:40,603 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 236 transitions. Word has length 157 [2021-02-22 01:12:40,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:12:40,604 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 236 transitions. [2021-02-22 01:12:40,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:12:40,604 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 236 transitions. [2021-02-22 01:12:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-22 01:12:40,607 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:12:40,608 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] [2021-02-22 01:12:40,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:12:40,608 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:12:40,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:12:40,609 INFO L82 PathProgramCache]: Analyzing trace with hash 624499832, now seen corresponding path program 1 times [2021-02-22 01:12:40,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:12:40,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555613633] [2021-02-22 01:12:40,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:12:40,618 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:12:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:40,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:40,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:40,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:40,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:40,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:40,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:40,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:40,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:40,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:40,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:40,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:40,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,050 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:12:41,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:12:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:41,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:12:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:12:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:12:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:12:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-22 01:12:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:41,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:12:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:12:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-22 01:12:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-22 01:12:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:41,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:41,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:12:41,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555613633] [2021-02-22 01:12:41,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:12:41,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:12:41,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246101862] [2021-02-22 01:12:41,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:12:41,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:12:41,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:12:41,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:12:41,241 INFO L87 Difference]: Start difference. First operand 222 states and 236 transitions. Second operand 6 states. [2021-02-22 01:12:41,816 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:12:43,344 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:12:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:12:43,873 INFO L93 Difference]: Finished difference Result 483 states and 549 transitions. [2021-02-22 01:12:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:12:43,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2021-02-22 01:12:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:12:43,877 INFO L225 Difference]: With dead ends: 483 [2021-02-22 01:12:43,877 INFO L226 Difference]: Without dead ends: 376 [2021-02-22 01:12:43,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:12:43,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-02-22 01:12:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 317. [2021-02-22 01:12:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2021-02-22 01:12:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 341 transitions. [2021-02-22 01:12:44,006 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 341 transitions. Word has length 165 [2021-02-22 01:12:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:12:44,007 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 341 transitions. [2021-02-22 01:12:44,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:12:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 341 transitions. [2021-02-22 01:12:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-02-22 01:12:44,010 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:12:44,010 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] [2021-02-22 01:12:44,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:12:44,010 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:12:44,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:12:44,011 INFO L82 PathProgramCache]: Analyzing trace with hash -373210986, now seen corresponding path program 1 times [2021-02-22 01:12:44,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:12:44,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351323500] [2021-02-22 01:12:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:12:44,014 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:12:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:44,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:44,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:44,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:44,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:12:44,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:12:44,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:12:44,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:12:44,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:12:44,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:12:44,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,454 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:12:44,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:12:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:12:44,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:12:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:12:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:12:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:12:44,559 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-22 01:12:44,560 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-22 01:12:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:12:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-22 01:12:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:12:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:12:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-22 01:12:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-22 01:12:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:44,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:12:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-22 01:12:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:12:44,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:12:44,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:12:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:12:44,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351323500] [2021-02-22 01:12:44,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:12:44,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:12:44,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555760839] [2021-02-22 01:12:44,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:12:44,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:12:44,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:12:44,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:12:44,731 INFO L87 Difference]: Start difference. First operand 317 states and 341 transitions. Second operand 14 states. [2021-02-22 01:12:45,364 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:12:45,855 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:12:46,220 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:12:46,588 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:12:46,964 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:12:47,321 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:12:48,067 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:12:49,313 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:12:49,684 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:12:50,071 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:12:50,448 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:12:50,810 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-22 01:12:51,174 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:12:51,538 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:12:51,896 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:12:52,301 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-22 01:12:52,752 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:12:53,902 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:12:54,262 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:12:54,698 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:12:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:12:55,614 INFO L93 Difference]: Finished difference Result 921 states and 1103 transitions. [2021-02-22 01:12:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-22 01:12:55,615 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2021-02-22 01:12:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:12:55,621 INFO L225 Difference]: With dead ends: 921 [2021-02-22 01:12:55,621 INFO L226 Difference]: Without dead ends: 719 [2021-02-22 01:12:55,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-22 01:12:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-02-22 01:12:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 622. [2021-02-22 01:12:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2021-02-22 01:12:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 692 transitions. [2021-02-22 01:12:55,882 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 692 transitions. Word has length 189 [2021-02-22 01:12:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:12:55,883 INFO L480 AbstractCegarLoop]: Abstraction has 622 states and 692 transitions. [2021-02-22 01:12:55,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:12:55,883 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 692 transitions. [2021-02-22 01:12:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-02-22 01:12:55,895 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:12:55,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:12:55,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:12:55,896 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:12:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:12:55,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1750208703, now seen corresponding path program 1 times [2021-02-22 01:12:55,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:12:55,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176657732] [2021-02-22 01:12:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:12:55,945 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-22 01:12:55,949 INFO L168 Benchmark]: Toolchain (without parser) took 27532.09 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 133.7 MB in the beginning and 176.7 MB in the end (delta: -43.0 MB). Peak memory consumption was 182.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:12:55,949 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:12:55,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.21 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 128.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:12:55,950 INFO L168 Benchmark]: Boogie Preprocessor took 90.84 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 124.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:12:55,950 INFO L168 Benchmark]: RCFGBuilder took 1247.93 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 69.4 MB in the end (delta: 55.1 MB). Peak memory consumption was 57.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:12:55,951 INFO L168 Benchmark]: TraceAbstraction took 25588.66 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 68.9 MB in the beginning and 176.7 MB in the end (delta: -107.8 MB). Peak memory consumption was 118.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:12:55,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 586.21 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 128.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.84 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 124.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1247.93 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 69.4 MB in the end (delta: 55.1 MB). Peak memory consumption was 57.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25588.66 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 68.9 MB in the beginning and 176.7 MB in the end (delta: -107.8 MB). Peak memory consumption was 118.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...