/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:59:25,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:59:25,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:59:25,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:59:25,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:59:25,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:59:25,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:59:25,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:59:25,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:59:25,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:59:25,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:59:25,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:59:25,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:59:25,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:59:25,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:59:25,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:59:25,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:59:25,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:59:25,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:59:25,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:59:25,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:59:25,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:59:25,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:59:25,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:59:25,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:59:25,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:59:25,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:59:25,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:59:25,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:59:25,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:59:25,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:59:25,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:59:25,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:59:25,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:59:25,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:59:25,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:59:25,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:59:25,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:59:25,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:59:25,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:59:25,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:59:25,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:59:25,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:59:25,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:59:25,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:59:25,876 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:59:25,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:59:25,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:59:25,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:59:25,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:59:25,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:59:25,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:59:25,881 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:59:25,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:59:25,882 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:59:25,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:59:25,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:59:25,882 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:59:25,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:59:25,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:59:25,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:59:25,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:59:25,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:59:25,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:59:25,884 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:59:26,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:59:26,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:59:26,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:59:26,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:59:26,454 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:59:26,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2021-02-23 16:59:26,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c6d24f4/0d8de7a2fb474b9d8174e38e70124164/FLAG1f49910ee [2021-02-23 16:59:27,352 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:59:27,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2021-02-23 16:59:27,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c6d24f4/0d8de7a2fb474b9d8174e38e70124164/FLAG1f49910ee [2021-02-23 16:59:27,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c6d24f4/0d8de7a2fb474b9d8174e38e70124164 [2021-02-23 16:59:27,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:59:27,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:59:27,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:59:27,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:59:27,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:59:27,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:59:27" (1/1) ... [2021-02-23 16:59:27,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b43c561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:27, skipping insertion in model container [2021-02-23 16:59:27,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:59:27" (1/1) ... [2021-02-23 16:59:27,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:59:27,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:59:27,977 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_product41.cil.c[3676,3689] [2021-02-23 16:59:28,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:59:28,158 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:59:28,191 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_product41.cil.c[3676,3689] [2021-02-23 16:59:28,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:59:28,343 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:59:28,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28 WrapperNode [2021-02-23 16:59:28,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:59:28,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:59:28,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:59:28,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:59:28,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (1/1) ... [2021-02-23 16:59:28,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (1/1) ... [2021-02-23 16:59:28,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (1/1) ... [2021-02-23 16:59:28,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (1/1) ... [2021-02-23 16:59:28,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (1/1) ... [2021-02-23 16:59:28,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (1/1) ... [2021-02-23 16:59:28,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (1/1) ... [2021-02-23 16:59:28,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:59:28,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:59:28,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:59:28,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:59:28,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:59:28,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:59:28,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:59:28,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:59:28,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:59:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:59:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:59:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:59:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:59:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:59:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:59:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:59:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:59:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:59:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:59:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:59:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:59:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:59:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:59:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:59:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:59:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:59:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:59:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:59:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:59:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:59:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:59:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:59:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:59:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:59:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:59:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:59:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:59:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:59:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:59:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:59:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:59:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:59:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:59:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:59:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:59:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:59:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:59:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:59:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:59:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:59:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:59:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:59:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:59:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:59:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:59:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:59:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:59:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:59:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:59:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:59:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:59:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:59:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:59:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:59:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:59:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:59:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:59:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:59:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:59:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:59:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:59:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:59:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:59:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:59:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:59:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:59:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:59:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:59:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:59:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:59:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:59:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:59:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:59:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:59:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:59:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:59:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:59:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:59:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:59:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:59:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:59:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:59:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:59:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:59:30,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:59:30,328 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:59:30,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:59:30 BoogieIcfgContainer [2021-02-23 16:59:30,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:59:30,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:59:30,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:59:30,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:59:30,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:59:27" (1/3) ... [2021-02-23 16:59:30,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0a5e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:59:30, skipping insertion in model container [2021-02-23 16:59:30,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:59:28" (2/3) ... [2021-02-23 16:59:30,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0a5e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:59:30, skipping insertion in model container [2021-02-23 16:59:30,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:59:30" (3/3) ... [2021-02-23 16:59:30,347 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2021-02-23 16:59:30,356 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:59:30,364 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:59:30,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:59:30,416 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:59:30,416 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:59:30,416 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:59:30,416 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:59:30,417 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:59:30,417 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:59:30,417 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:59:30,417 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:59:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2021-02-23 16:59:30,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:59:30,467 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:30,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:59:30,469 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:30,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:30,478 INFO L82 PathProgramCache]: Analyzing trace with hash 185323344, now seen corresponding path program 1 times [2021-02-23 16:59:30,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:30,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223079502] [2021-02-23 16:59:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:30,583 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:30,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:30,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:30,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:30,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:31,320 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:31,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:31,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:31,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:31,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:31,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:31,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:31,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:31,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:31,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:31,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:31,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:31,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:31,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:31,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:59:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:31,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:31,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:31,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:59:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:31,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:31,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:31,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223079502] [2021-02-23 16:59:31,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:31,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:59:31,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728860691] [2021-02-23 16:59:31,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:59:31,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:31,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:59:31,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:59:31,616 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2021-02-23 16:59:33,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:33,724 INFO L93 Difference]: Finished difference Result 471 states and 555 transitions. [2021-02-23 16:59:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:59:33,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:59:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:33,751 INFO L225 Difference]: With dead ends: 471 [2021-02-23 16:59:33,751 INFO L226 Difference]: Without dead ends: 295 [2021-02-23 16:59:33,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:59:33,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-23 16:59:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 254. [2021-02-23 16:59:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-23 16:59:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 273 transitions. [2021-02-23 16:59:33,965 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 273 transitions. Word has length 147 [2021-02-23 16:59:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:33,966 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 273 transitions. [2021-02-23 16:59:33,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:59:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 273 transitions. [2021-02-23 16:59:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:59:33,972 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:33,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:59:33,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:59:33,974 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 410058938, now seen corresponding path program 1 times [2021-02-23 16:59:33,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:33,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826570591] [2021-02-23 16:59:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:33,981 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:34,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:34,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,482 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:34,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:34,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:34,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:34,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:34,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:59:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:34,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:59:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:34,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:34,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:34,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826570591] [2021-02-23 16:59:34,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:34,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:59:34,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452225851] [2021-02-23 16:59:34,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:59:34,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:34,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:59:34,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:59:34,645 INFO L87 Difference]: Start difference. First operand 254 states and 273 transitions. Second operand 4 states. [2021-02-23 16:59:35,552 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:59:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:36,775 INFO L93 Difference]: Finished difference Result 387 states and 429 transitions. [2021-02-23 16:59:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:59:36,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:59:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:36,801 INFO L225 Difference]: With dead ends: 387 [2021-02-23 16:59:36,801 INFO L226 Difference]: Without dead ends: 278 [2021-02-23 16:59:36,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:59:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-23 16:59:36,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 244. [2021-02-23 16:59:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-23 16:59:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 260 transitions. [2021-02-23 16:59:36,999 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 260 transitions. Word has length 148 [2021-02-23 16:59:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:37,003 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 260 transitions. [2021-02-23 16:59:37,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:59:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 260 transitions. [2021-02-23 16:59:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:59:37,013 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:37,013 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] [2021-02-23 16:59:37,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:59:37,014 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:37,015 INFO L82 PathProgramCache]: Analyzing trace with hash -253440529, now seen corresponding path program 1 times [2021-02-23 16:59:37,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:37,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791475294] [2021-02-23 16:59:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:37,025 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:37,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:37,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:37,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:37,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,602 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:59:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:59:37,746 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:59:37,747 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:59:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:59:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:59:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:37,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:37,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:37,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791475294] [2021-02-23 16:59:37,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:37,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:59:37,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563690746] [2021-02-23 16:59:37,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:59:37,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:37,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:59:37,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:59:37,829 INFO L87 Difference]: Start difference. First operand 244 states and 260 transitions. Second operand 9 states. [2021-02-23 16:59:38,544 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:59:39,077 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:59:39,500 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:59:39,932 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:40,373 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:40,781 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:42,641 INFO L93 Difference]: Finished difference Result 407 states and 454 transitions. [2021-02-23 16:59:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:59:42,642 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:59:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:42,649 INFO L225 Difference]: With dead ends: 407 [2021-02-23 16:59:42,651 INFO L226 Difference]: Without dead ends: 278 [2021-02-23 16:59:42,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:59:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-23 16:59:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 244. [2021-02-23 16:59:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-23 16:59:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 259 transitions. [2021-02-23 16:59:42,795 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 259 transitions. Word has length 157 [2021-02-23 16:59:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:42,797 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 259 transitions. [2021-02-23 16:59:42,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:59:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 259 transitions. [2021-02-23 16:59:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:59:42,801 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:42,801 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] [2021-02-23 16:59:42,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:59:42,802 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:42,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1510513546, now seen corresponding path program 1 times [2021-02-23 16:59:42,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:42,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251755630] [2021-02-23 16:59:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:42,810 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:42,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:42,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:42,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:42,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:42,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:42,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:42,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:42,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:42,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:42,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:42,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:42,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,419 WARN L202 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:59:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:43,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:59:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:59:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:59:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:43,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:43,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:43,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251755630] [2021-02-23 16:59:43,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:43,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:59:43,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422764361] [2021-02-23 16:59:43,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:59:43,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:43,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:59:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:59:43,710 INFO L87 Difference]: Start difference. First operand 244 states and 259 transitions. Second operand 6 states. [2021-02-23 16:59:44,404 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:59:46,585 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:59:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:59:47,233 INFO L93 Difference]: Finished difference Result 529 states and 597 transitions. [2021-02-23 16:59:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:59:47,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2021-02-23 16:59:47,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:59:47,240 INFO L225 Difference]: With dead ends: 529 [2021-02-23 16:59:47,240 INFO L226 Difference]: Without dead ends: 400 [2021-02-23 16:59:47,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:59:47,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-02-23 16:59:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 341. [2021-02-23 16:59:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2021-02-23 16:59:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 366 transitions. [2021-02-23 16:59:47,395 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 366 transitions. Word has length 165 [2021-02-23 16:59:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:59:47,395 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 366 transitions. [2021-02-23 16:59:47,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:59:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 366 transitions. [2021-02-23 16:59:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-02-23 16:59:47,399 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:59:47,399 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] [2021-02-23 16:59:47,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:59:47,399 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:59:47,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:59:47,400 INFO L82 PathProgramCache]: Analyzing trace with hash -240653231, now seen corresponding path program 1 times [2021-02-23 16:59:47,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:59:47,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30181278] [2021-02-23 16:59:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:59:47,404 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:59:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:47,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:47,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:47,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:47,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:47,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:47,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:47,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:47,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:47,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:47,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:59:47,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:47,918 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:59:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:59:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:47,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:47,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:59:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:59:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:47,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:59:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:47,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:47,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:47,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:59:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:48,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:48,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:59:48,037 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:59:48,040 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:59:48,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:59:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:48,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:48,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:59:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:48,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:59:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:48,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:48,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:59:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:48,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:59:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:48,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-23 16:59:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:48,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:48,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:48,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:59:48,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-23 16:59:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:59:48,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:59:48,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:59:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:59:48,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30181278] [2021-02-23 16:59:48,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:59:48,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:59:48,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725003229] [2021-02-23 16:59:48,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:59:48,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:59:48,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:59:48,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:59:48,247 INFO L87 Difference]: Start difference. First operand 341 states and 366 transitions. Second operand 14 states. [2021-02-23 16:59:48,983 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:59:49,531 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:59:49,975 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:59:50,401 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:50,831 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:51,220 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:52,112 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:59:53,612 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:59:54,050 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:54,524 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:55,000 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:59:55,443 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:59:55,864 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:59:56,283 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:56,777 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:57,292 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:59:57,745 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:59:59,589 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 17:00:00,015 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:00,515 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:01,506 INFO L93 Difference]: Finished difference Result 1017 states and 1203 transitions. [2021-02-23 17:00:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 17:00:01,507 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2021-02-23 17:00:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:01,514 INFO L225 Difference]: With dead ends: 1017 [2021-02-23 17:00:01,515 INFO L226 Difference]: Without dead ends: 791 [2021-02-23 17:00:01,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 17:00:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-02-23 17:00:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 694. [2021-02-23 17:00:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2021-02-23 17:00:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 767 transitions. [2021-02-23 17:00:01,893 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 767 transitions. Word has length 189 [2021-02-23 17:00:01,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:01,893 INFO L480 AbstractCegarLoop]: Abstraction has 694 states and 767 transitions. [2021-02-23 17:00:01,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:00:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 767 transitions. [2021-02-23 17:00:01,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-02-23 17:00:01,901 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:01,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:00:01,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:00:01,902 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:01,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1043464974, now seen corresponding path program 1 times [2021-02-23 17:00:01,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:01,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449347852] [2021-02-23 17:00:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:02,007 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 17:00:02,010 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,409 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 17:00:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 17:00:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:02,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:02,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:02,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:02,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:02,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:00:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 17:00:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 17:00:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 17:00:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 17:00:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-23 17:00:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-02-23 17:00:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-02-23 17:00:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-02-23 17:00:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-02-23 17:00:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-02-23 17:00:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:02,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:02,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:00:02,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449347852] [2021-02-23 17:00:02,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:02,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:00:02,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51813634] [2021-02-23 17:00:02,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:00:02,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:02,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:00:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:00:02,867 INFO L87 Difference]: Start difference. First operand 694 states and 767 transitions. Second operand 11 states. [2021-02-23 17:00:04,596 WARN L202 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:05,055 WARN L202 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:00:05,502 WARN L202 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 17:00:05,930 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:06,346 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:06,741 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:08,326 INFO L93 Difference]: Finished difference Result 1386 states and 1605 transitions. [2021-02-23 17:00:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:00:08,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 268 [2021-02-23 17:00:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:08,335 INFO L225 Difference]: With dead ends: 1386 [2021-02-23 17:00:08,336 INFO L226 Difference]: Without dead ends: 807 [2021-02-23 17:00:08,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:00:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-02-23 17:00:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 718. [2021-02-23 17:00:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2021-02-23 17:00:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 792 transitions. [2021-02-23 17:00:08,902 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 792 transitions. Word has length 268 [2021-02-23 17:00:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:08,903 INFO L480 AbstractCegarLoop]: Abstraction has 718 states and 792 transitions. [2021-02-23 17:00:08,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:00:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 792 transitions. [2021-02-23 17:00:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-02-23 17:00:08,914 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:08,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:00:08,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:00:08,916 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:08,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:08,917 INFO L82 PathProgramCache]: Analyzing trace with hash 255114578, now seen corresponding path program 1 times [2021-02-23 17:00:08,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:08,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062651256] [2021-02-23 17:00:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:08,952 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 17:00:08,956 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:00:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:09,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:09,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,401 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 17:00:09,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:00:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 17:00:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 17:00:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 17:00:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:09,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:00:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 17:00:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 17:00:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 17:00:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:09,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:09,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:00:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:09,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:00:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 17:00:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 17:00:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 17:00:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 17:00:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-23 17:00:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-02-23 17:00:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-02-23 17:00:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-02-23 17:00:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:00:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-02-23 17:00:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-02-23 17:00:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:00:09,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:09,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:00:09,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062651256] [2021-02-23 17:00:09,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:00:09,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:00:09,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069113901] [2021-02-23 17:00:09,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:00:09,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:00:09,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:00:09,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:00:09,831 INFO L87 Difference]: Start difference. First operand 718 states and 792 transitions. Second operand 14 states. [2021-02-23 17:00:10,685 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 17:00:11,094 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 17:00:11,528 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:11,940 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:12,338 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:13,410 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:13,819 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:14,250 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:14,688 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 17:00:15,101 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 17:00:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:00:16,844 INFO L93 Difference]: Finished difference Result 1239 states and 1420 transitions. [2021-02-23 17:00:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 17:00:16,844 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 268 [2021-02-23 17:00:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:00:16,850 INFO L225 Difference]: With dead ends: 1239 [2021-02-23 17:00:16,851 INFO L226 Difference]: Without dead ends: 636 [2021-02-23 17:00:16,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-23 17:00:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-02-23 17:00:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 574. [2021-02-23 17:00:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2021-02-23 17:00:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 629 transitions. [2021-02-23 17:00:17,082 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 629 transitions. Word has length 268 [2021-02-23 17:00:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:00:17,083 INFO L480 AbstractCegarLoop]: Abstraction has 574 states and 629 transitions. [2021-02-23 17:00:17,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:00:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 629 transitions. [2021-02-23 17:00:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-02-23 17:00:17,090 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:00:17,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:00:17,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:00:17,091 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:00:17,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:00:17,092 INFO L82 PathProgramCache]: Analyzing trace with hash 78247887, now seen corresponding path program 1 times [2021-02-23 17:00:17,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:00:17,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385173461] [2021-02-23 17:00:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:00:17,446 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2021-02-23 17:00:17,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:17,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-02-23 17:00:17,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:17,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:17,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:17,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:17,804 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2021-02-23 17:00:17,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:17,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-02-23 17:00:17,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:17,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:18,127 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2021-02-23 17:00:18,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:18,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-02-23 17:00:18,407 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2021-02-23 17:00:18,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:18,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-02-23 17:00:18,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:18,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:18,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:18,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:18,795 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2021-02-23 17:00:18,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:18,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-02-23 17:00:18,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:18,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:19,092 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2021-02-23 17:00:19,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:19,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-02-23 17:00:19,390 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2021-02-23 17:00:19,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:19,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-02-23 17:00:19,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:19,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:19,704 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2021-02-23 17:00:19,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:19,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-02-23 17:00:19,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:00:19,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:00:19,734 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 17:00:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:00:19,928 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:00:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:00:20,129 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:00:20,484 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:00:20,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:00:20,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:00:20,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:00:20 BoogieIcfgContainer [2021-02-23 17:00:20,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:00:20,561 INFO L168 Benchmark]: Toolchain (without parser) took 52931.19 ms. Allocated memory was 156.2 MB in the beginning and 644.9 MB in the end (delta: 488.6 MB). Free memory was 131.5 MB in the beginning and 524.2 MB in the end (delta: -392.7 MB). Peak memory consumption was 96.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:00:20,561 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:00:20,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.10 ms. Allocated memory is still 156.2 MB. Free memory was 130.4 MB in the beginning and 110.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 17:00:20,561 INFO L168 Benchmark]: Boogie Preprocessor took 137.25 ms. Allocated memory is still 156.2 MB. Free memory was 110.1 MB in the beginning and 106.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:00:20,562 INFO L168 Benchmark]: RCFGBuilder took 1847.40 ms. Allocated memory was 156.2 MB in the beginning and 199.2 MB in the end (delta: 43.0 MB). Free memory was 106.3 MB in the beginning and 148.8 MB in the end (delta: -42.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:00:20,562 INFO L168 Benchmark]: TraceAbstraction took 50218.23 ms. Allocated memory was 199.2 MB in the beginning and 644.9 MB in the end (delta: 445.6 MB). Free memory was 148.3 MB in the beginning and 524.2 MB in the end (delta: -375.9 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:00:20,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.10 ms. Allocated memory is still 156.2 MB. Free memory was 130.4 MB in the beginning and 110.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 137.25 ms. Allocated memory is still 156.2 MB. Free memory was 110.1 MB in the beginning and 106.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1847.40 ms. Allocated memory was 156.2 MB in the beginning and 199.2 MB in the end (delta: 43.0 MB). Free memory was 106.3 MB in the beginning and 148.8 MB in the end (delta: -42.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50218.23 ms. Allocated memory was 199.2 MB in the beginning and 644.9 MB in the end (delta: 445.6 MB). Free memory was 148.3 MB in the beginning and 524.2 MB in the end (delta: -375.9 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 213]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L387] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int pumpRunning = 0; [L655] int systemActive = 1; [L824] int cleanupTimeShifts = 4; [L897] int retValue_acc ; [L898] int tmp ; [L902] FCALL select_helpers() [L903] FCALL select_features() [L904] CALL, EXPR valid_product() [L200] int retValue_acc ; [L203] retValue_acc = 1 [L204] return (retValue_acc); [L904] RET, EXPR valid_product() [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) [L908] FCALL setup() [L909] CALL runTest() [L891] CALL test() [L587] int splverifierCounter ; [L588] int tmp ; [L589] int tmp___0 ; [L590] int tmp___1 ; [L591] int tmp___2 ; [L594] splverifierCounter = 0 [L596] COND TRUE 1 [L598] COND TRUE splverifierCounter < 4 [L604] tmp = __VERIFIER_nondet_int() [L606] COND TRUE \read(tmp) [L608] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L608] RET waterRise() [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) [L639] CALL timeShift() [L661] COND FALSE !(\read(pumpRunning)) [L668] COND TRUE \read(systemActive) [L670] CALL processEnvironment() [L690] int tmp ; [L693] COND TRUE ! pumpRunning [L695] CALL, EXPR isHighWaterLevel() [L805] int retValue_acc ; [L806] int tmp ; [L807] int tmp___0 ; [L811] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L811] RET, EXPR isHighWaterSensorDry() [L811] tmp = isHighWaterSensorDry() [L813] COND FALSE !(\read(tmp)) [L816] tmp___0 = 1 [L818] retValue_acc = tmp___0 [L819] return (retValue_acc); [L695] RET, EXPR isHighWaterLevel() [L695] tmp = isHighWaterLevel() [L697] COND TRUE \read(tmp) [L699] CALL activatePump() [L724] int tmp ; [L728] CALL, EXPR isMethaneAlarm() [L749] int retValue_acc ; [L753] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L753] RET, EXPR isMethaneLevelCritical() [L753] retValue_acc = isMethaneLevelCritical() [L755] return (retValue_acc); [L728] RET, EXPR isMethaneAlarm() [L728] tmp = isMethaneAlarm() [L730] COND FALSE !(\read(tmp)) [L734] CALL activatePump__wrappee__highWaterSensor() [L718] pumpRunning = 1 [L734] RET activatePump__wrappee__highWaterSensor() [L699] RET activatePump() [L670] RET processEnvironment() [L676] CALL __utac_acc__Specification4_spec__1() [L146] int tmp ; [L147] int tmp___0 ; [L151] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L151] RET, EXPR getWaterLevel() [L151] tmp = getWaterLevel() [L153] COND FALSE !(tmp == 0) [L676] RET __utac_acc__Specification4_spec__1() [L639] RET timeShift() [L596] COND TRUE 1 [L598] COND TRUE splverifierCounter < 4 [L604] tmp = __VERIFIER_nondet_int() [L606] COND FALSE !(\read(tmp)) [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) [L639] CALL timeShift() [L661] COND TRUE \read(pumpRunning) [L663] CALL lowerWaterLevel() [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 [L663] RET lowerWaterLevel() [L668] COND TRUE \read(systemActive) [L670] CALL processEnvironment() [L690] int tmp ; [L693] COND FALSE !(! pumpRunning) [L708] FCALL processEnvironment__wrappee__base() [L670] RET processEnvironment() [L676] CALL __utac_acc__Specification4_spec__1() [L146] int tmp ; [L147] int tmp___0 ; [L151] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L151] RET, EXPR getWaterLevel() [L151] tmp = getWaterLevel() [L153] COND TRUE tmp == 0 [L155] CALL, EXPR isPumpRunning() [L760] int retValue_acc ; [L763] retValue_acc = pumpRunning [L764] return (retValue_acc); [L155] RET, EXPR isPumpRunning() [L155] tmp___0 = isPumpRunning() [L157] COND TRUE \read(tmp___0) [L159] CALL __automaton_fail() [L213] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 624 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 38.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1619 SDtfs, 2831 SDslu, 3562 SDs, 0 SdLazy, 6591 SolverSat, 794 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=718occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 416 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...