/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:59:21,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:59:21,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:59:21,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:59:21,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:59:21,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:59:21,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:59:21,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:59:21,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:59:21,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:59:21,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:59:21,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:59:21,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:59:21,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:59:21,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:59:21,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:59:21,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:59:21,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:59:21,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:59:21,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:59:21,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:59:21,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:59:21,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:59:21,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:59:21,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:59:21,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:59:21,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:59:21,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:59:21,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:59:21,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:59:21,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:59:21,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:59:21,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:59:21,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:59:21,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:59:21,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:59:21,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:59:21,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:59:21,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:59:21,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:59:21,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:59:21,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:59:21,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:59:21,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:59:21,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:59:21,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:59:21,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:59:21,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:59:21,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:59:21,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:59:21,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:59:21,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:59:21,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:59:21,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:59:21,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:59:21,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:59:21,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:59:21,658 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:59:21,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:59:21,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:59:21,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:59:21,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:59:21,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:59:21,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:59:21,659 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:59:21,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:59:21,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:59:21,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:59:21,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:59:21,944 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:59:21,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-08-22 17:59:22,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0373cfef2/4cfd80c0528e4ceda36413712b367aca/FLAG0bb83cbb4 [2020-08-22 17:59:22,526 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:59:22,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-08-22 17:59:22,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0373cfef2/4cfd80c0528e4ceda36413712b367aca/FLAG0bb83cbb4 [2020-08-22 17:59:22,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0373cfef2/4cfd80c0528e4ceda36413712b367aca [2020-08-22 17:59:22,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:59:22,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:59:22,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:59:22,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:59:22,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:59:22,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:59:22" (1/1) ... [2020-08-22 17:59:22,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415d1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:22, skipping insertion in model container [2020-08-22 17:59:22,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:59:22" (1/1) ... [2020-08-22 17:59:22,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:59:22,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:59:23,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:59:23,387 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:59:23,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:59:23,561 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:59:23,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23 WrapperNode [2020-08-22 17:59:23,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:59:23,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:59:23,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:59:23,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:59:23,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (1/1) ... [2020-08-22 17:59:23,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (1/1) ... [2020-08-22 17:59:23,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (1/1) ... [2020-08-22 17:59:23,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (1/1) ... [2020-08-22 17:59:23,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (1/1) ... [2020-08-22 17:59:23,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (1/1) ... [2020-08-22 17:59:23,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (1/1) ... [2020-08-22 17:59:23,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:59:23,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:59:23,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:59:23,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:59:23,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (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 [2020-08-22 17:59:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:59:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:59:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:59:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:59:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:59:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:59:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:59:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:59:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:59:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:59:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:59:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:59:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:59:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:59:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:59:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:59:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:59:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:59:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:59:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:59:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:59:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:59:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:59:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:59:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:59:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 17:59:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 17:59:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:59:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:59:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:59:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:59:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 17:59:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:59:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:59:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:59:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:59:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:59:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:59:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 17:59:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:59:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:59:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:59:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:59:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:59:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 17:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:59:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 17:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 17:59:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 17:59:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:59:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:59:24,769 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:59:24,769 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:59:24,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:59:24 BoogieIcfgContainer [2020-08-22 17:59:24,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:59:24,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:59:24,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:59:24,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:59:24,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:59:22" (1/3) ... [2020-08-22 17:59:24,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e2f1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:59:24, skipping insertion in model container [2020-08-22 17:59:24,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:23" (2/3) ... [2020-08-22 17:59:24,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e2f1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:59:24, skipping insertion in model container [2020-08-22 17:59:24,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:59:24" (3/3) ... [2020-08-22 17:59:24,783 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2020-08-22 17:59:24,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:59:24,802 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:59:24,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:59:24,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:59:24,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:59:24,836 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:59:24,836 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:59:24,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:59:24,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:59:24,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:59:24,837 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:59:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-08-22 17:59:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 17:59:24,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:24,882 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] [2020-08-22 17:59:24,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash 712153127, now seen corresponding path program 1 times [2020-08-22 17:59:24,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:24,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953217199] [2020-08-22 17:59:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:24,956 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,658 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:59:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:25,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953217199] [2020-08-22 17:59:25,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:25,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:59:25,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840236974] [2020-08-22 17:59:25,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:59:25,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:25,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:59:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:59:25,904 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 4 states. [2020-08-22 17:59:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:27,193 INFO L93 Difference]: Finished difference Result 489 states and 577 transitions. [2020-08-22 17:59:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 17:59:27,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-22 17:59:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:27,212 INFO L225 Difference]: With dead ends: 489 [2020-08-22 17:59:27,212 INFO L226 Difference]: Without dead ends: 312 [2020-08-22 17:59:27,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:59:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-08-22 17:59:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2020-08-22 17:59:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-22 17:59:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-08-22 17:59:27,358 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 148 [2020-08-22 17:59:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:27,359 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-08-22 17:59:27,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:59:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-08-22 17:59:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 17:59:27,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:27,364 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] [2020-08-22 17:59:27,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:59:27,365 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:27,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1114292978, now seen corresponding path program 1 times [2020-08-22 17:59:27,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:27,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468274763] [2020-08-22 17:59:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:27,369 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,711 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 17:59:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:59:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:27,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468274763] [2020-08-22 17:59:27,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:27,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 17:59:27,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841165094] [2020-08-22 17:59:27,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 17:59:27,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:27,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 17:59:27,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:59:27,826 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 5 states. [2020-08-22 17:59:28,462 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:29,370 INFO L93 Difference]: Finished difference Result 409 states and 462 transitions. [2020-08-22 17:59:29,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 17:59:29,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-08-22 17:59:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:29,377 INFO L225 Difference]: With dead ends: 409 [2020-08-22 17:59:29,377 INFO L226 Difference]: Without dead ends: 301 [2020-08-22 17:59:29,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:59:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-08-22 17:59:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2020-08-22 17:59:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-08-22 17:59:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 271 transitions. [2020-08-22 17:59:29,452 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 271 transitions. Word has length 149 [2020-08-22 17:59:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:29,453 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 271 transitions. [2020-08-22 17:59:29,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 17:59:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 271 transitions. [2020-08-22 17:59:29,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-22 17:59:29,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:29,456 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] [2020-08-22 17:59:29,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:59:29,456 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:29,457 INFO L82 PathProgramCache]: Analyzing trace with hash 185312608, now seen corresponding path program 1 times [2020-08-22 17:59:29,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:29,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103963437] [2020-08-22 17:59:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:29,460 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,900 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:29,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:30,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:59:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:30,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:59:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:30,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103963437] [2020-08-22 17:59:30,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:30,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:59:30,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273194766] [2020-08-22 17:59:30,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:59:30,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:59:30,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:59:30,097 INFO L87 Difference]: Start difference. First operand 252 states and 271 transitions. Second operand 10 states. [2020-08-22 17:59:30,559 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:30,901 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:31,149 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:31,388 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:31,624 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:31,918 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:32,879 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:34,694 INFO L93 Difference]: Finished difference Result 671 states and 774 transitions. [2020-08-22 17:59:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:59:34,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-08-22 17:59:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:34,701 INFO L225 Difference]: With dead ends: 671 [2020-08-22 17:59:34,701 INFO L226 Difference]: Without dead ends: 534 [2020-08-22 17:59:34,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-08-22 17:59:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-22 17:59:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 445. [2020-08-22 17:59:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-22 17:59:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 494 transitions. [2020-08-22 17:59:34,860 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 494 transitions. Word has length 158 [2020-08-22 17:59:34,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:34,861 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 494 transitions. [2020-08-22 17:59:34,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:59:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 494 transitions. [2020-08-22 17:59:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 17:59:34,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:34,864 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] [2020-08-22 17:59:34,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:59:34,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash 226204253, now seen corresponding path program 1 times [2020-08-22 17:59:34,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:34,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999017732] [2020-08-22 17:59:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:34,868 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,165 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:35,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:59:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:59:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:59:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:35,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999017732] [2020-08-22 17:59:35,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:35,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 17:59:35,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532656130] [2020-08-22 17:59:35,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 17:59:35,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:35,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 17:59:35,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:59:35,286 INFO L87 Difference]: Start difference. First operand 445 states and 494 transitions. Second operand 7 states. [2020-08-22 17:59:35,884 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:37,788 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:38,395 INFO L93 Difference]: Finished difference Result 1113 states and 1318 transitions. [2020-08-22 17:59:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 17:59:38,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-08-22 17:59:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:38,408 INFO L225 Difference]: With dead ends: 1113 [2020-08-22 17:59:38,408 INFO L226 Difference]: Without dead ends: 783 [2020-08-22 17:59:38,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-08-22 17:59:38,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-08-22 17:59:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 655. [2020-08-22 17:59:38,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-22 17:59:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 728 transitions. [2020-08-22 17:59:38,687 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 728 transitions. Word has length 166 [2020-08-22 17:59:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:38,689 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 728 transitions. [2020-08-22 17:59:38,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 17:59:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 728 transitions. [2020-08-22 17:59:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 17:59:38,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:38,691 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] [2020-08-22 17:59:38,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:59:38,692 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:38,692 INFO L82 PathProgramCache]: Analyzing trace with hash 216605652, now seen corresponding path program 1 times [2020-08-22 17:59:38,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:38,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505902572] [2020-08-22 17:59:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:38,695 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,208 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:39,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:59:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:59:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 17:59:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:39,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505902572] [2020-08-22 17:59:39,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:39,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:59:39,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842830583] [2020-08-22 17:59:39,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:59:39,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:39,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:59:39,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:59:39,437 INFO L87 Difference]: Start difference. First operand 655 states and 728 transitions. Second operand 10 states. [2020-08-22 17:59:40,071 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:41,091 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:41,335 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:41,607 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:41,859 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:42,098 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:42,320 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:42,546 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:42,974 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:44,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:44,616 INFO L93 Difference]: Finished difference Result 1778 states and 2087 transitions. [2020-08-22 17:59:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 17:59:44,617 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-08-22 17:59:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:44,625 INFO L225 Difference]: With dead ends: 1778 [2020-08-22 17:59:44,626 INFO L226 Difference]: Without dead ends: 1238 [2020-08-22 17:59:44,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 17:59:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-08-22 17:59:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1091. [2020-08-22 17:59:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-08-22 17:59:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1217 transitions. [2020-08-22 17:59:44,930 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1217 transitions. Word has length 167 [2020-08-22 17:59:44,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:44,931 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1217 transitions. [2020-08-22 17:59:44,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:59:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1217 transitions. [2020-08-22 17:59:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 17:59:44,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:44,934 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] [2020-08-22 17:59:44,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:59:44,934 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:44,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:44,934 INFO L82 PathProgramCache]: Analyzing trace with hash 611019346, now seen corresponding path program 1 times [2020-08-22 17:59:44,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:44,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881654162] [2020-08-22 17:59:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:44,937 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,198 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 17:59:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:59:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 17:59:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:45,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881654162] [2020-08-22 17:59:45,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:45,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:59:45,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448238832] [2020-08-22 17:59:45,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:59:45,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:59:45,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:59:45,406 INFO L87 Difference]: Start difference. First operand 1091 states and 1217 transitions. Second operand 11 states. [2020-08-22 17:59:45,969 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:47,187 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:47,433 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:47,729 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:47,959 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:48,217 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:48,892 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:49,111 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:49,392 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:50,359 INFO L93 Difference]: Finished difference Result 2337 states and 2719 transitions. [2020-08-22 17:59:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 17:59:50,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-08-22 17:59:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:50,367 INFO L225 Difference]: With dead ends: 2337 [2020-08-22 17:59:50,367 INFO L226 Difference]: Without dead ends: 1361 [2020-08-22 17:59:50,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 17:59:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-08-22 17:59:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1085. [2020-08-22 17:59:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-22 17:59:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1205 transitions. [2020-08-22 17:59:50,665 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1205 transitions. Word has length 172 [2020-08-22 17:59:50,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:50,666 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1205 transitions. [2020-08-22 17:59:50,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:59:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1205 transitions. [2020-08-22 17:59:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 17:59:50,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:50,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:50,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:59:50,671 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:50,672 INFO L82 PathProgramCache]: Analyzing trace with hash -472762249, now seen corresponding path program 1 times [2020-08-22 17:59:50,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:50,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440048492] [2020-08-22 17:59:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:50,675 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,906 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:50,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:59:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:51,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:51,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:59:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:59:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:59:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 17:59:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:59:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:51,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440048492] [2020-08-22 17:59:51,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:51,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:59:51,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140245639] [2020-08-22 17:59:51,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:59:51,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:59:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:59:51,108 INFO L87 Difference]: Start difference. First operand 1085 states and 1205 transitions. Second operand 11 states. [2020-08-22 17:59:52,371 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:52,612 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:52,862 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 17:59:53,119 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:53,383 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:53,606 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:54,872 INFO L93 Difference]: Finished difference Result 2483 states and 2970 transitions. [2020-08-22 17:59:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:59:54,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 218 [2020-08-22 17:59:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:54,884 INFO L225 Difference]: With dead ends: 2483 [2020-08-22 17:59:54,884 INFO L226 Difference]: Without dead ends: 1513 [2020-08-22 17:59:54,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:59:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2020-08-22 17:59:55,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1117. [2020-08-22 17:59:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-08-22 17:59:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1237 transitions. [2020-08-22 17:59:55,216 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1237 transitions. Word has length 218 [2020-08-22 17:59:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:55,216 INFO L479 AbstractCegarLoop]: Abstraction has 1117 states and 1237 transitions. [2020-08-22 17:59:55,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:59:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1237 transitions. [2020-08-22 17:59:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 17:59:55,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:55,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:55,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:59:55,222 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:55,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:55,223 INFO L82 PathProgramCache]: Analyzing trace with hash 967037143, now seen corresponding path program 1 times [2020-08-22 17:59:55,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:55,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962123054] [2020-08-22 17:59:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:55,225 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,463 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:55,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:59:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:59:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:59:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:59:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 17:59:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:59:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:55,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962123054] [2020-08-22 17:59:55,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:55,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 17:59:55,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88154076] [2020-08-22 17:59:55,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 17:59:55,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:55,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 17:59:55,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-08-22 17:59:55,749 INFO L87 Difference]: Start difference. First operand 1117 states and 1237 transitions. Second operand 14 states. [2020-08-22 17:59:56,286 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:56,520 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:56,753 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:56,981 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:57,198 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:58,033 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:58,276 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:58,585 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:58,844 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:59,075 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:00:00,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:00:00,657 INFO L93 Difference]: Finished difference Result 2551 states and 3042 transitions. [2020-08-22 18:00:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 18:00:00,658 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-08-22 18:00:00,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:00:00,666 INFO L225 Difference]: With dead ends: 2551 [2020-08-22 18:00:00,666 INFO L226 Difference]: Without dead ends: 1549 [2020-08-22 18:00:00,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-08-22 18:00:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2020-08-22 18:00:01,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1141. [2020-08-22 18:00:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2020-08-22 18:00:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1261 transitions. [2020-08-22 18:00:01,127 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1261 transitions. Word has length 218 [2020-08-22 18:00:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:00:01,127 INFO L479 AbstractCegarLoop]: Abstraction has 1141 states and 1261 transitions. [2020-08-22 18:00:01,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:00:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1261 transitions. [2020-08-22 18:00:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 18:00:01,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:00:01,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:00:01,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:00:01,131 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:00:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:00:01,132 INFO L82 PathProgramCache]: Analyzing trace with hash 346565396, now seen corresponding path program 1 times [2020-08-22 18:00:01,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:00:01,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42187409] [2020-08-22 18:00:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:00:01,135 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:00:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,410 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:00:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:00:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 18:00:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 18:00:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 18:00:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 18:00:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 18:00:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 18:00:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 18:00:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:00:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:00:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 18:00:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 18:00:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 18:00:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:00:01,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42187409] [2020-08-22 18:00:01,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:00:01,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 18:00:01,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712232525] [2020-08-22 18:00:01,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 18:00:01,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:00:01,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 18:00:01,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:00:01,627 INFO L87 Difference]: Start difference. First operand 1141 states and 1261 transitions. Second operand 8 states. [2020-08-22 18:00:02,101 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:00:02,680 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:00:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:00:05,665 INFO L93 Difference]: Finished difference Result 3759 states and 4568 transitions. [2020-08-22 18:00:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 18:00:05,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-08-22 18:00:05,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:00:05,680 INFO L225 Difference]: With dead ends: 3759 [2020-08-22 18:00:05,680 INFO L226 Difference]: Without dead ends: 2733 [2020-08-22 18:00:05,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-22 18:00:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2020-08-22 18:00:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2183. [2020-08-22 18:00:06,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-08-22 18:00:06,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 2467 transitions. [2020-08-22 18:00:06,360 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 2467 transitions. Word has length 218 [2020-08-22 18:00:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:00:06,361 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 2467 transitions. [2020-08-22 18:00:06,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 18:00:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 2467 transitions. [2020-08-22 18:00:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-08-22 18:00:06,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:00:06,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:00:06,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:00:06,365 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:00:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:00:06,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1445646548, now seen corresponding path program 1 times [2020-08-22 18:00:06,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:00:06,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813886882] [2020-08-22 18:00:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:00:06,369 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:00:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,639 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:00:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:00:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 18:00:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 18:00:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 18:00:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 18:00:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 18:00:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:00:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:00:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:00:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:00:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:00:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:06,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:07,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:07,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 18:00:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-22 18:00:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-08-22 18:00:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:00:07,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813886882] [2020-08-22 18:00:07,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:00:07,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-08-22 18:00:07,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452013393] [2020-08-22 18:00:07,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 18:00:07,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:00:07,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 18:00:07,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-08-22 18:00:07,192 INFO L87 Difference]: Start difference. First operand 2183 states and 2467 transitions. Second operand 21 states. [2020-08-22 18:00:07,704 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:00:08,042 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:00:08,301 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:00:08,552 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:00:08,799 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 18:00:09,044 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:00:09,920 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:00:10,735 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:00:11,059 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 18:00:11,466 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:00:11,770 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 18:00:13,191 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:00:13,537 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 18:00:13,811 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:00:14,114 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 18:00:14,405 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:00:14,834 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 18:00:15,095 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:00:15,385 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 18:00:15,910 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 18:00:16,489 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 193 [2020-08-22 18:00:16,958 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 18:00:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:00:18,971 INFO L93 Difference]: Finished difference Result 4708 states and 5522 transitions. [2020-08-22 18:00:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-08-22 18:00:18,972 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 223 [2020-08-22 18:00:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:00:18,986 INFO L225 Difference]: With dead ends: 4708 [2020-08-22 18:00:18,987 INFO L226 Difference]: Without dead ends: 2640 [2020-08-22 18:00:18,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=793, Invalid=3367, Unknown=0, NotChecked=0, Total=4160 [2020-08-22 18:00:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-08-22 18:00:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2109. [2020-08-22 18:00:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2020-08-22 18:00:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2353 transitions. [2020-08-22 18:00:19,662 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2353 transitions. Word has length 223 [2020-08-22 18:00:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:00:19,663 INFO L479 AbstractCegarLoop]: Abstraction has 2109 states and 2353 transitions. [2020-08-22 18:00:19,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 18:00:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2353 transitions. [2020-08-22 18:00:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-22 18:00:19,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:00:19,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:00:19,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:00:19,668 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:00:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:00:19,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1177290011, now seen corresponding path program 1 times [2020-08-22 18:00:19,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:00:19,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776816800] [2020-08-22 18:00:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:00:19,707 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:00:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:19,976 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:00:19,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:00:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:19,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 18:00:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:19,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 18:00:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:19,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 18:00:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 18:00:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 18:00:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:00:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:00:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:00:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:00:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 18:00:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:00:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-22 18:00:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 18:00:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 18:00:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-22 18:00:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 18:00:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:00:20,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776816800] [2020-08-22 18:00:20,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:00:20,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:00:20,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454741308] [2020-08-22 18:00:20,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:00:20,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:00:20,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:00:20,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:00:20,332 INFO L87 Difference]: Start difference. First operand 2109 states and 2353 transitions. Second operand 9 states. [2020-08-22 18:00:20,799 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:00:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:00:24,062 INFO L93 Difference]: Finished difference Result 4101 states and 4883 transitions. [2020-08-22 18:00:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 18:00:24,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 271 [2020-08-22 18:00:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:00:24,085 INFO L225 Difference]: With dead ends: 4101 [2020-08-22 18:00:24,085 INFO L226 Difference]: Without dead ends: 4098 [2020-08-22 18:00:24,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2020-08-22 18:00:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-08-22 18:00:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3201. [2020-08-22 18:00:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3201 states. [2020-08-22 18:00:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 3579 transitions. [2020-08-22 18:00:25,040 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 3579 transitions. Word has length 271 [2020-08-22 18:00:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:00:25,041 INFO L479 AbstractCegarLoop]: Abstraction has 3201 states and 3579 transitions. [2020-08-22 18:00:25,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:00:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 3579 transitions. [2020-08-22 18:00:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-08-22 18:00:25,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:00:25,050 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:00:25,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 18:00:25,050 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:00:25,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:00:25,051 INFO L82 PathProgramCache]: Analyzing trace with hash 855560626, now seen corresponding path program 1 times [2020-08-22 18:00:25,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:00:25,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811418924] [2020-08-22 18:00:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:00:25,066 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:00:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,328 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:00:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:00:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 18:00:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 18:00:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 18:00:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 18:00:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 18:00:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:00:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:00:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:00:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:00:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 18:00:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:00:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-22 18:00:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 18:00:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:00:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 18:00:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 18:00:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 18:00:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-22 18:00:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 18:00:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:00:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-08-22 18:00:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-22 18:00:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:00:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:00:25,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811418924] [2020-08-22 18:00:25,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:00:25,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 18:00:25,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146866962] [2020-08-22 18:00:25,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 18:00:25,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:00:25,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 18:00:25,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-22 18:00:25,637 INFO L87 Difference]: Start difference. First operand 3201 states and 3579 transitions. Second operand 12 states. [2020-08-22 18:00:26,102 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:00:26,707 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:00:30,283 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:00:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:00:32,266 INFO L93 Difference]: Finished difference Result 8906 states and 10528 transitions. [2020-08-22 18:00:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-22 18:00:32,267 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 329 [2020-08-22 18:00:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:00:32,300 INFO L225 Difference]: With dead ends: 8906 [2020-08-22 18:00:32,300 INFO L226 Difference]: Without dead ends: 6285 [2020-08-22 18:00:32,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=452, Invalid=1440, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 18:00:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2020-08-22 18:00:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 4725. [2020-08-22 18:00:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4725 states. [2020-08-22 18:00:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 5285 transitions. [2020-08-22 18:00:33,709 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 5285 transitions. Word has length 329 [2020-08-22 18:00:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:00:33,710 INFO L479 AbstractCegarLoop]: Abstraction has 4725 states and 5285 transitions. [2020-08-22 18:00:33,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 18:00:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 5285 transitions. [2020-08-22 18:00:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-22 18:00:33,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:00:33,719 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 18:00:33,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 18:00:33,720 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:00:33,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:00:33,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1466953620, now seen corresponding path program 1 times [2020-08-22 18:00:33,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:00:33,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933084244] [2020-08-22 18:00:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:00:33,734 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:00:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:00:33,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:00:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:00:33,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:00:34,134 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:00:34,134 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:00:34,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 18:00:34,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:00:34 BoogieIcfgContainer [2020-08-22 18:00:34,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:00:34,167 INFO L168 Benchmark]: Toolchain (without parser) took 71265.18 ms. Allocated memory was 140.5 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 102.5 MB in the beginning and 644.4 MB in the end (delta: -541.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-08-22 18:00:34,168 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:00:34,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.28 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 169.8 MB in the end (delta: -67.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:00:34,169 INFO L168 Benchmark]: Boogie Preprocessor took 82.07 ms. Allocated memory is still 203.4 MB. Free memory was 169.8 MB in the beginning and 165.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:00:34,170 INFO L168 Benchmark]: RCFGBuilder took 1130.37 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 165.9 MB in the beginning and 169.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:00:34,170 INFO L168 Benchmark]: TraceAbstraction took 69389.12 ms. Allocated memory was 233.8 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 167.8 MB in the beginning and 644.4 MB in the end (delta: -476.6 MB). Peak memory consumption was 988.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:00:34,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.28 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 169.8 MB in the end (delta: -67.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.07 ms. Allocated memory is still 203.4 MB. Free memory was 169.8 MB in the beginning and 165.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1130.37 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 165.9 MB in the beginning and 169.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 69389.12 ms. Allocated memory was 233.8 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 167.8 MB in the beginning and 644.4 MB in the end (delta: -476.6 MB). Peak memory consumption was 988.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 946]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L507] int cleanupTimeShifts = 4; [L648] int methAndRunningLastTime ; [L757] int pumpRunning = 0; [L758] int systemActive = 1; [L588] int retValue_acc ; [L589] int tmp ; [L593] FCALL select_helpers() [L594] FCALL select_features() [L595] CALL, EXPR valid_product() [L637] int retValue_acc ; [L640] retValue_acc = 1 [L641] return (retValue_acc); [L595] RET, EXPR valid_product() [L595] tmp = valid_product() [L597] COND TRUE \read(tmp) [L599] FCALL setup() [L600] CALL runTest() [L578] CALL __utac_acc__Specification2_spec__1() [L653] methAndRunningLastTime = 0 [L578] RET __utac_acc__Specification2_spec__1() [L579] CALL test() [L689] int splverifierCounter ; [L690] int tmp ; [L691] int tmp___0 ; [L692] int tmp___1 ; [L693] int tmp___2 ; [L696] splverifierCounter = 0 [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND TRUE \read(tmp) [L710] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L710] RET waterRise() [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND FALSE !(\read(pumpRunning)) [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND TRUE ! pumpRunning [L798] CALL, EXPR isHighWaterLevel() [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; [L914] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L914] RET, EXPR isHighWaterSensorDry() [L914] tmp = isHighWaterSensorDry() [L916] COND FALSE !(\read(tmp)) [L919] tmp___0 = 1 [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); [L798] RET, EXPR isHighWaterLevel() [L798] tmp = isHighWaterLevel() [L800] COND TRUE \read(tmp) [L802] CALL activatePump() [L827] int tmp ; [L831] CALL, EXPR isMethaneAlarm() [L852] int retValue_acc ; [L856] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] retValue_acc = isMethaneLevelCritical() [L858] return (retValue_acc); [L831] RET, EXPR isMethaneAlarm() [L831] tmp = isMethaneAlarm() [L833] COND FALSE !(\read(tmp)) [L837] CALL activatePump__wrappee__highWaterSensor() [L821] pumpRunning = 1 [L837] RET activatePump__wrappee__highWaterSensor() [L802] RET activatePump() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L681] methAndRunningLastTime = 0 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp___0) [L720] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L720] RET changeMethaneLevel() [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND FALSE !(\read(methAndRunningLastTime)) [L675] methAndRunningLastTime = 1 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND TRUE \read(methAndRunningLastTime) [L672] CALL __automaton_fail() [L946] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 630 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 69.3s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 55.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3136 SDtfs, 9807 SDslu, 6824 SDs, 0 SdLazy, 15220 SolverSat, 2920 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 723 GetRequests, 425 SyntacticMatches, 10 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 22.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4725occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 5081 StatesRemovedByMinimization, 12 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...