/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_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:26:16,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:26:16,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:26:16,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:26:16,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:26:16,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:26:16,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:26:16,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:26:16,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:26:16,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:26:16,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:26:16,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:26:16,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:26:16,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:26:16,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:26:16,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:26:16,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:26:16,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:26:16,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:26:16,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:26:16,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:26:16,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:26:16,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:26:16,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:26:16,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:26:16,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:26:16,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:26:16,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:26:16,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:26:16,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:26:16,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:26:16,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:26:16,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:26:16,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:26:16,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:26:16,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:26:16,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:26:16,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:26:16,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:26:16,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:26:16,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:26:16,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:26:16,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:26:16,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:26:16,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:26:16,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:26:16,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:26:16,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:26:16,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:26:16,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:26:16,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:26:16,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:26:16,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:26:16,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:26:16,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:26:16,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:26:16,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:26:16,659 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:26:16,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:26:16,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:26:16,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:26:16,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:26:16,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:26:16,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:26:16,661 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:26:16,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:26:16,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:26:16,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:26:16,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:26:16,947 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:26:16,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-07-07 12:26:17,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e11c09bd/c9703f042a0548bbaac60f9ce002c333/FLAGc381d323f [2020-07-07 12:26:17,482 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:26:17,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-07-07 12:26:17,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e11c09bd/c9703f042a0548bbaac60f9ce002c333/FLAGc381d323f [2020-07-07 12:26:17,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e11c09bd/c9703f042a0548bbaac60f9ce002c333 [2020-07-07 12:26:17,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:26:17,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:26:17,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:26:17,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:26:17,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:26:17,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:26:17" (1/1) ... [2020-07-07 12:26:17,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e395755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:17, skipping insertion in model container [2020-07-07 12:26:17,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:26:17" (1/1) ... [2020-07-07 12:26:17,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:26:17,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:26:18,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:26:18,400 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:26:18,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:26:18,526 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:26:18,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18 WrapperNode [2020-07-07 12:26:18,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:26:18,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:26:18,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:26:18,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:26:18,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (1/1) ... [2020-07-07 12:26:18,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (1/1) ... [2020-07-07 12:26:18,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (1/1) ... [2020-07-07 12:26:18,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (1/1) ... [2020-07-07 12:26:18,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (1/1) ... [2020-07-07 12:26:18,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (1/1) ... [2020-07-07 12:26:18,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (1/1) ... [2020-07-07 12:26:18,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:26:18,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:26:18,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:26:18,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:26:18,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (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 [2020-07-07 12:26:18,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:26:18,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:26:18,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:26:18,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:26:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:26:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:26:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:26:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:26:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:26:18,676 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:26:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:26:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:26:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:26:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-07 12:26:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:26:18,677 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:26:18,678 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:26:18,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:26:18,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:26:18,678 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:26:18,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:26:18,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-07 12:26:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:26:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:26:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:26:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:26:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:26:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:26:18,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:26:18,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:26:18,680 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:26:18,680 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:26:18,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:26:18,680 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:26:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:26:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:26:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:26:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:26:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:26:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:26:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:26:18,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:26:18,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-07 12:26:18,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:26:18,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:26:18,682 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:26:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:26:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:26:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:26:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:26:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:26:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:26:18,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:26:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:26:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:26:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:26:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:26:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:26:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:26:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:26:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:26:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:26:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:26:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:26:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:26:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:26:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:26:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:26:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:26:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:26:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:26:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-07 12:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-07 12:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-07 12:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:26:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:26:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:26:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:26:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:26:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:26:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:26:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:26:18,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:26:19,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:26:19,763 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:26:19,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:26:19 BoogieIcfgContainer [2020-07-07 12:26:19,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:26:19,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:26:19,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:26:19,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:26:19,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:26:17" (1/3) ... [2020-07-07 12:26:19,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7536aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:26:19, skipping insertion in model container [2020-07-07 12:26:19,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:26:18" (2/3) ... [2020-07-07 12:26:19,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7536aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:26:19, skipping insertion in model container [2020-07-07 12:26:19,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:26:19" (3/3) ... [2020-07-07 12:26:19,777 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-07-07 12:26:19,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:26:19,795 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:26:19,809 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:26:19,830 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:26:19,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:26:19,830 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:26:19,831 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:26:19,831 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:26:19,831 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:26:19,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:26:19,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:26:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2020-07-07 12:26:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:26:19,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:19,874 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] [2020-07-07 12:26:19,875 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:19,881 INFO L82 PathProgramCache]: Analyzing trace with hash 826882234, now seen corresponding path program 1 times [2020-07-07 12:26:19,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:19,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621981712] [2020-07-07 12:26:19,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:20,622 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:20,823 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:20,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621981712] [2020-07-07 12:26:20,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:20,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:26:20,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133341153] [2020-07-07 12:26:20,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:26:20,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:20,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:26:20,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:26:20,852 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 3 states. [2020-07-07 12:26:22,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:22,289 INFO L93 Difference]: Finished difference Result 554 states and 662 transitions. [2020-07-07 12:26:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:26:22,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:26:22,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:22,308 INFO L225 Difference]: With dead ends: 554 [2020-07-07 12:26:22,309 INFO L226 Difference]: Without dead ends: 337 [2020-07-07 12:26:22,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:26:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-07 12:26:22,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 291. [2020-07-07 12:26:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-07-07 12:26:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 320 transitions. [2020-07-07 12:26:22,469 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 320 transitions. Word has length 142 [2020-07-07 12:26:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:22,470 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 320 transitions. [2020-07-07 12:26:22,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:26:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 320 transitions. [2020-07-07 12:26:22,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:26:22,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:22,476 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] [2020-07-07 12:26:22,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:26:22,476 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:22,477 INFO L82 PathProgramCache]: Analyzing trace with hash -820599246, now seen corresponding path program 1 times [2020-07-07 12:26:22,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:22,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111754828] [2020-07-07 12:26:22,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:22,812 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:22,914 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:22,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111754828] [2020-07-07 12:26:22,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:22,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:26:22,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931959088] [2020-07-07 12:26:22,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:26:22,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:22,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:26:22,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:26:22,919 INFO L87 Difference]: Start difference. First operand 291 states and 320 transitions. Second operand 4 states. [2020-07-07 12:26:23,462 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:24,581 INFO L93 Difference]: Finished difference Result 461 states and 525 transitions. [2020-07-07 12:26:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:26:24,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:26:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:24,588 INFO L225 Difference]: With dead ends: 461 [2020-07-07 12:26:24,588 INFO L226 Difference]: Without dead ends: 320 [2020-07-07 12:26:24,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:26:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-07-07 12:26:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 281. [2020-07-07 12:26:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-07-07 12:26:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 307 transitions. [2020-07-07 12:26:24,713 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 307 transitions. Word has length 143 [2020-07-07 12:26:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:24,714 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 307 transitions. [2020-07-07 12:26:24,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:26:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 307 transitions. [2020-07-07 12:26:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-07 12:26:24,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:24,717 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] [2020-07-07 12:26:24,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:26:24,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:24,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1576489327, now seen corresponding path program 1 times [2020-07-07 12:26:24,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:24,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100876084] [2020-07-07 12:26:24,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,004 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:25,155 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:25,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100876084] [2020-07-07 12:26:25,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:25,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:26:25,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659645333] [2020-07-07 12:26:25,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:26:25,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:25,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:26:25,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:26:25,159 INFO L87 Difference]: Start difference. First operand 281 states and 307 transitions. Second operand 10 states. [2020-07-07 12:26:25,644 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:25,959 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:26,196 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:26:26,430 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:26,659 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:26,915 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:27,784 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:30,471 INFO L93 Difference]: Finished difference Result 782 states and 917 transitions. [2020-07-07 12:26:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:26:30,471 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-07 12:26:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:30,477 INFO L225 Difference]: With dead ends: 782 [2020-07-07 12:26:30,477 INFO L226 Difference]: Without dead ends: 611 [2020-07-07 12:26:30,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:26:30,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-07-07 12:26:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 512. [2020-07-07 12:26:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-07-07 12:26:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 578 transitions. [2020-07-07 12:26:30,651 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 578 transitions. Word has length 156 [2020-07-07 12:26:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:30,652 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 578 transitions. [2020-07-07 12:26:30,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:26:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 578 transitions. [2020-07-07 12:26:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:26:30,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:30,655 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] [2020-07-07 12:26:30,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:26:30,656 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:30,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:30,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1953483698, now seen corresponding path program 1 times [2020-07-07 12:26:30,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:30,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871768670] [2020-07-07 12:26:30,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:30,970 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:31,214 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:31,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871768670] [2020-07-07 12:26:31,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:31,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:26:31,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628501618] [2020-07-07 12:26:31,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:26:31,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:31,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:26:31,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:26:31,220 INFO L87 Difference]: Start difference. First operand 512 states and 578 transitions. Second operand 9 states. [2020-07-07 12:26:31,833 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:33,033 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:33,335 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:33,696 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:33,967 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:34,227 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:34,566 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:34,864 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:35,422 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:36,752 INFO L93 Difference]: Finished difference Result 1442 states and 1734 transitions. [2020-07-07 12:26:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:26:36,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-07-07 12:26:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:36,761 INFO L225 Difference]: With dead ends: 1442 [2020-07-07 12:26:36,761 INFO L226 Difference]: Without dead ends: 1040 [2020-07-07 12:26:36,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:26:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-07-07 12:26:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 875. [2020-07-07 12:26:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-07-07 12:26:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1002 transitions. [2020-07-07 12:26:37,082 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1002 transitions. Word has length 161 [2020-07-07 12:26:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:37,082 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 1002 transitions. [2020-07-07 12:26:37,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:26:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1002 transitions. [2020-07-07 12:26:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 12:26:37,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:37,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:37,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:26:37,088 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1356616012, now seen corresponding path program 1 times [2020-07-07 12:26:37,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:37,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412931793] [2020-07-07 12:26:37,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,387 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:37,586 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:37,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412931793] [2020-07-07 12:26:37,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:37,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:26:37,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715598119] [2020-07-07 12:26:37,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:26:37,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:37,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:26:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:26:37,591 INFO L87 Difference]: Start difference. First operand 875 states and 1002 transitions. Second operand 10 states. [2020-07-07 12:26:38,120 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:39,409 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:39,673 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:39,929 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:40,227 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:40,463 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:41,151 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:41,409 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:41,717 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:43,101 INFO L93 Difference]: Finished difference Result 2250 states and 2781 transitions. [2020-07-07 12:26:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:26:43,102 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-07-07 12:26:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:43,111 INFO L225 Difference]: With dead ends: 2250 [2020-07-07 12:26:43,111 INFO L226 Difference]: Without dead ends: 1485 [2020-07-07 12:26:43,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-07-07 12:26:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-07-07 12:26:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1217. [2020-07-07 12:26:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-07-07 12:26:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1409 transitions. [2020-07-07 12:26:43,506 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1409 transitions. Word has length 166 [2020-07-07 12:26:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:43,506 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1409 transitions. [2020-07-07 12:26:43,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:26:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1409 transitions. [2020-07-07 12:26:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-07 12:26:43,510 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:43,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:43,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:26:43,511 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash 515628642, now seen corresponding path program 1 times [2020-07-07 12:26:43,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:43,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137916058] [2020-07-07 12:26:43,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,775 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:43,999 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:43,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137916058] [2020-07-07 12:26:43,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:43,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:26:44,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976945058] [2020-07-07 12:26:44,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:26:44,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:26:44,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:26:44,001 INFO L87 Difference]: Start difference. First operand 1217 states and 1409 transitions. Second operand 14 states. [2020-07-07 12:26:44,550 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:44,782 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:45,007 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:45,231 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:45,481 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:46,461 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:46,697 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:46,952 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:47,226 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:47,477 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:49,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:49,796 INFO L93 Difference]: Finished difference Result 2953 states and 3770 transitions. [2020-07-07 12:26:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:26:49,797 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-07-07 12:26:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:49,878 INFO L225 Difference]: With dead ends: 2953 [2020-07-07 12:26:49,878 INFO L226 Difference]: Without dead ends: 1846 [2020-07-07 12:26:49,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-07-07 12:26:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-07-07 12:26:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1247. [2020-07-07 12:26:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-07-07 12:26:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1441 transitions. [2020-07-07 12:26:50,262 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1441 transitions. Word has length 204 [2020-07-07 12:26:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:50,262 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1441 transitions. [2020-07-07 12:26:50,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:26:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1441 transitions. [2020-07-07 12:26:50,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-07 12:26:50,267 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:50,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:50,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:26:50,267 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:50,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:50,268 INFO L82 PathProgramCache]: Analyzing trace with hash 101997250, now seen corresponding path program 1 times [2020-07-07 12:26:50,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:50,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333259648] [2020-07-07 12:26:50,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,580 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:50,788 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:50,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333259648] [2020-07-07 12:26:50,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:50,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:26:50,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665021615] [2020-07-07 12:26:50,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:26:50,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:26:50,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:26:50,791 INFO L87 Difference]: Start difference. First operand 1247 states and 1441 transitions. Second operand 11 states. [2020-07-07 12:26:52,170 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:52,410 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:52,674 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:26:52,936 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:53,189 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:53,417 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:55,322 INFO L93 Difference]: Finished difference Result 2995 states and 3739 transitions. [2020-07-07 12:26:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:26:55,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-07-07 12:26:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:55,336 INFO L225 Difference]: With dead ends: 2995 [2020-07-07 12:26:55,336 INFO L226 Difference]: Without dead ends: 1858 [2020-07-07 12:26:55,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-07-07 12:26:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-07-07 12:26:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1279. [2020-07-07 12:26:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-07-07 12:26:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1473 transitions. [2020-07-07 12:26:55,702 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1473 transitions. Word has length 204 [2020-07-07 12:26:55,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:55,703 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1473 transitions. [2020-07-07 12:26:55,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:26:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1473 transitions. [2020-07-07 12:26:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-07 12:26:55,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:55,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:55,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:26:55,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash 446110533, now seen corresponding path program 1 times [2020-07-07 12:26:55,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:55,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213144168] [2020-07-07 12:26:55,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,209 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:56,396 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:56,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213144168] [2020-07-07 12:26:56,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:56,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 12:26:56,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926650525] [2020-07-07 12:26:56,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 12:26:56,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:56,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 12:26:56,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 12:26:56,398 INFO L87 Difference]: Start difference. First operand 1279 states and 1473 transitions. Second operand 8 states. [2020-07-07 12:26:56,842 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:57,348 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:27:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:27:01,610 INFO L93 Difference]: Finished difference Result 4593 states and 5883 transitions. [2020-07-07 12:27:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 12:27:01,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-07-07 12:27:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:27:01,635 INFO L225 Difference]: With dead ends: 4593 [2020-07-07 12:27:01,635 INFO L226 Difference]: Without dead ends: 3424 [2020-07-07 12:27:01,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-07-07 12:27:01,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2020-07-07 12:27:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 2499. [2020-07-07 12:27:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-07-07 12:27:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2905 transitions. [2020-07-07 12:27:02,954 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2905 transitions. Word has length 204 [2020-07-07 12:27:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:27:02,955 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 2905 transitions. [2020-07-07 12:27:02,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 12:27:02,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2905 transitions. [2020-07-07 12:27:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-07 12:27:02,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:27:02,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:27:02,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:27:02,962 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:27:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:27:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2057395573, now seen corresponding path program 1 times [2020-07-07 12:27:02,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:27:02,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241114228] [2020-07-07 12:27:02,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:27:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:27:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:27:03,315 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:27:03,316 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:27:03,316 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:27:03,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:27:03,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:27:03 BoogieIcfgContainer [2020-07-07 12:27:03,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:27:03,342 INFO L168 Benchmark]: Toolchain (without parser) took 45498.57 ms. Allocated memory was 142.1 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 98.9 MB in the beginning and 945.4 MB in the end (delta: -846.5 MB). Peak memory consumption was 223.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:27:03,343 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:27:03,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.94 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 98.5 MB in the beginning and 168.9 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-07-07 12:27:03,344 INFO L168 Benchmark]: Boogie Preprocessor took 89.70 ms. Allocated memory is still 200.3 MB. Free memory was 168.9 MB in the beginning and 164.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:27:03,345 INFO L168 Benchmark]: RCFGBuilder took 1152.37 ms. Allocated memory was 200.3 MB in the beginning and 227.5 MB in the end (delta: 27.3 MB). Free memory was 164.5 MB in the beginning and 170.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:27:03,346 INFO L168 Benchmark]: TraceAbstraction took 43569.78 ms. Allocated memory was 227.5 MB in the beginning and 1.2 GB in the end (delta: 984.6 MB). Free memory was 170.2 MB in the beginning and 945.4 MB in the end (delta: -775.1 MB). Peak memory consumption was 209.5 MB. Max. memory is 7.1 GB. [2020-07-07 12:27:03,350 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.94 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 98.5 MB in the beginning and 168.9 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.70 ms. Allocated memory is still 200.3 MB. Free memory was 168.9 MB in the beginning and 164.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1152.37 ms. Allocated memory was 200.3 MB in the beginning and 227.5 MB in the end (delta: 27.3 MB). Free memory was 164.5 MB in the beginning and 170.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43569.78 ms. Allocated memory was 227.5 MB in the beginning and 1.2 GB in the end (delta: 984.6 MB). Free memory was 170.2 MB in the beginning and 945.4 MB in the end (delta: -775.1 MB). Peak memory consumption was 209.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 806]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int pumpRunning = 0; [L491] int systemActive = 1; [L811] int cleanupTimeShifts = 4; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; [L884] int retValue_acc ; [L885] int tmp ; [L889] FCALL select_helpers() [L890] FCALL select_features() [L891] CALL, EXPR valid_product() [L766] int retValue_acc ; [L769] retValue_acc = 1 [L770] return (retValue_acc); [L891] RET, EXPR valid_product() [L891] tmp = valid_product() [L893] COND TRUE \read(tmp) [L895] FCALL setup() [L896] CALL runTest() [L878] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp___0) [L444] CALL changeMethaneLevel() [L938] COND FALSE !(\read(methaneLevelCritical)) [L941] methaneLevelCritical = 1 [L444] RET changeMethaneLevel() [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L454] CALL startSystem() [L732] systemActive = 1 [L454] RET startSystem() [L469] CALL timeShift() [L498] COND FALSE !(\read(pumpRunning)) [L505] COND TRUE \read(systemActive) [L507] CALL processEnvironment() [L579] int tmp ; [L582] COND FALSE !(\read(pumpRunning)) [L597] CALL processEnvironment__wrappee__lowWaterSensor() [L553] int tmp ; [L556] COND FALSE !(\read(pumpRunning)) [L571] CALL processEnvironment__wrappee__highWaterSensor() [L527] int tmp ; [L530] COND TRUE ! pumpRunning [L532] CALL, EXPR isHighWaterLevel() [L676] int retValue_acc ; [L677] int tmp ; [L678] int tmp___0 ; [L682] CALL, EXPR isHighWaterSensorDry() [L988] int retValue_acc ; [L991] COND FALSE !(waterLevel < 2) [L995] retValue_acc = 0 [L996] return (retValue_acc); [L682] RET, EXPR isHighWaterSensorDry() [L682] tmp = isHighWaterSensorDry() [L684] COND FALSE !(\read(tmp)) [L687] tmp___0 = 1 [L689] retValue_acc = tmp___0 [L690] return (retValue_acc); [L532] RET, EXPR isHighWaterLevel() [L532] tmp = isHighWaterLevel() [L534] COND TRUE \read(tmp) [L536] CALL activatePump() [L607] pumpRunning = 1 [L536] RET activatePump() [L571] RET processEnvironment__wrappee__highWaterSensor() [L597] RET processEnvironment__wrappee__lowWaterSensor() [L507] RET processEnvironment() [L513] CALL __utac_acc__Specification1_spec__1() [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isMethaneLevelCritical() [L947] int retValue_acc ; [L950] retValue_acc = methaneLevelCritical [L951] return (retValue_acc); [L782] RET, EXPR isMethaneLevelCritical() [L782] tmp = isMethaneLevelCritical() [L784] COND TRUE \read(tmp) [L786] CALL, EXPR isPumpRunning() [L631] int retValue_acc ; [L634] retValue_acc = pumpRunning [L635] return (retValue_acc); [L786] RET, EXPR isPumpRunning() [L786] tmp___0 = isPumpRunning() [L788] COND TRUE \read(tmp___0) [L790] CALL __automaton_fail() [L806] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 659 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 35.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2250 SDtfs, 4800 SDslu, 4390 SDs, 0 SdLazy, 10298 SolverSat, 1619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2499occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2720 StatesRemovedByMinimization, 8 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...