/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_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:24:52,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:24:52,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:24:52,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:24:52,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:24:52,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:24:52,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:24:52,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:24:52,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:24:52,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:24:52,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:24:52,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:24:52,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:24:52,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:24:52,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:24:52,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:24:52,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:24:52,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:24:52,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:24:52,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:24:52,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:24:52,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:24:52,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:24:52,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:24:52,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:24:52,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:24:52,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:24:52,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:24:52,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:24:52,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:24:52,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:24:52,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:24:52,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:24:52,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:24:52,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:24:52,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:24:52,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:24:52,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:24:52,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:24:52,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:24:52,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:24:52,570 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 12:24:52,582 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:24:52,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:24:52,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:24:52,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:24:52,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:24:52,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:24:52,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:24:52,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:24:52,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:24:52,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:24:52,587 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:24:52,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:24:52,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:24:52,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:24:52,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:24:52,588 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:24:52,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:24:52,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:24:52,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:24:52,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:24:52,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:24:52,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:24:52,590 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:24:52,861 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:24:52,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:24:52,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:24:52,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:24:52,882 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:24:52,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-07 12:24:52,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcdecdf2/3de24a6431b1487995358adf11e2e840/FLAG791e6c0c7 [2020-07-07 12:24:53,489 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:24:53,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-07 12:24:53,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcdecdf2/3de24a6431b1487995358adf11e2e840/FLAG791e6c0c7 [2020-07-07 12:24:53,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcdecdf2/3de24a6431b1487995358adf11e2e840 [2020-07-07 12:24:53,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:24:53,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:24:53,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:24:53,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:24:53,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:24:53,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:24:53" (1/1) ... [2020-07-07 12:24:53,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1caafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:53, skipping insertion in model container [2020-07-07 12:24:53,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:24:53" (1/1) ... [2020-07-07 12:24:53,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:24:53,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:24:54,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:24:54,341 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:24:54,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:24:54,484 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:24:54,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54 WrapperNode [2020-07-07 12:24:54,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:24:54,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:24:54,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:24:54,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:24:54,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (1/1) ... [2020-07-07 12:24:54,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (1/1) ... [2020-07-07 12:24:54,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (1/1) ... [2020-07-07 12:24:54,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (1/1) ... [2020-07-07 12:24:54,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (1/1) ... [2020-07-07 12:24:54,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (1/1) ... [2020-07-07 12:24:54,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (1/1) ... [2020-07-07 12:24:54,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:24:54,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:24:54,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:24:54,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:24:54,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (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 12:24:54,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:24:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:24:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:24:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:24:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:24:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:24:54,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:24:54,639 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:24:54,639 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:24:54,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:24:54,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:24:54,639 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:24:54,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:24:54,640 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:24:54,640 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:24:54,640 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:24:54,640 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:24:54,640 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:24:54,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:24:54,641 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:24:54,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:24:54,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:24:54,641 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:24:54,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:24:54,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:24:54,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:24:54,642 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:24:54,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:24:54,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:24:54,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:24:54,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:24:54,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:24:54,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:24:54,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:24:54,643 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:24:54,644 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:24:54,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:24:54,644 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:24:54,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:24:54,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:24:54,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:24:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:24:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:24:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:24:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:24:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:24:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:24:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:24:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:24:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:24:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:24:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:24:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:24:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:24:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:24:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:24:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:24:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:24:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:24:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:24:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:24:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:24:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:24:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:24:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:24:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:24:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:24:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:24:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:24:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:24:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:24:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:24:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:24:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:24:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:24:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:24:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:24:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:24:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:24:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:24:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:24:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:24:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:24:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:24:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:24:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:24:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:24:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:24:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:24:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:24:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:24:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:24:55,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:24:55,816 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:24:55,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:24:55 BoogieIcfgContainer [2020-07-07 12:24:55,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:24:55,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:24:55,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:24:55,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:24:55,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:24:53" (1/3) ... [2020-07-07 12:24:55,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484e5849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:24:55, skipping insertion in model container [2020-07-07 12:24:55,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:54" (2/3) ... [2020-07-07 12:24:55,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484e5849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:24:55, skipping insertion in model container [2020-07-07 12:24:55,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:24:55" (3/3) ... [2020-07-07 12:24:55,831 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-07-07 12:24:55,842 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:24:55,852 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:24:55,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:24:55,891 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:24:55,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:24:55,891 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:24:55,891 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:24:55,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:24:55,892 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:24:55,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:24:55,892 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:24:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-07-07 12:24:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:24:55,935 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:24:55,936 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 12:24:55,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:24:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:24:55,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1033241294, now seen corresponding path program 1 times [2020-07-07 12:24:55,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:24:55,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152776021] [2020-07-07 12:24:55,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:24:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,722 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:24:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:56,924 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 12:24:56,924 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:24:56,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152776021] [2020-07-07 12:24:56,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:24:56,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:24:56,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377137095] [2020-07-07 12:24:56,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:24:56,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:24:56,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:24:56,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:24:56,960 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 3 states. [2020-07-07 12:24:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:24:58,352 INFO L93 Difference]: Finished difference Result 448 states and 534 transitions. [2020-07-07 12:24:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:24:58,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:24:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:24:58,372 INFO L225 Difference]: With dead ends: 448 [2020-07-07 12:24:58,372 INFO L226 Difference]: Without dead ends: 282 [2020-07-07 12:24:58,378 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 12:24:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-07 12:24:58,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 240. [2020-07-07 12:24:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-07 12:24:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 259 transitions. [2020-07-07 12:24:58,501 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 259 transitions. Word has length 142 [2020-07-07 12:24:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:24:58,502 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 259 transitions. [2020-07-07 12:24:58,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:24:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 259 transitions. [2020-07-07 12:24:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:24:58,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:24:58,507 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 12:24:58,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:24:58,508 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:24:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:24:58,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1951375081, now seen corresponding path program 1 times [2020-07-07 12:24:58,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:24:58,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744849106] [2020-07-07 12:24:58,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:24:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:58,867 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:24:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:24:58,934 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 12:24:58,935 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:24:58,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744849106] [2020-07-07 12:24:58,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:24:58,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:24:58,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143322213] [2020-07-07 12:24:58,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:24:58,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:24:58,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:24:58,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:24:58,938 INFO L87 Difference]: Start difference. First operand 240 states and 259 transitions. Second operand 4 states. [2020-07-07 12:24:59,576 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:00,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:00,371 INFO L93 Difference]: Finished difference Result 352 states and 395 transitions. [2020-07-07 12:25:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:25:00,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:25:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:00,378 INFO L225 Difference]: With dead ends: 352 [2020-07-07 12:25:00,379 INFO L226 Difference]: Without dead ends: 265 [2020-07-07 12:25:00,381 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 12:25:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-07-07 12:25:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 230. [2020-07-07 12:25:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-07 12:25:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 246 transitions. [2020-07-07 12:25:00,485 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 246 transitions. Word has length 143 [2020-07-07 12:25:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:00,486 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 246 transitions. [2020-07-07 12:25:00,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:25:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 246 transitions. [2020-07-07 12:25:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-07 12:25:00,488 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:00,489 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 12:25:00,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:25:00,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:00,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:00,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1408786884, now seen corresponding path program 1 times [2020-07-07 12:25:00,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:00,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301167342] [2020-07-07 12:25:00,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,782 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,954 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 12:25:00,954 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:00,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301167342] [2020-07-07 12:25:00,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:00,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:00,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451879041] [2020-07-07 12:25:00,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:00,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:00,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:00,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:00,958 INFO L87 Difference]: Start difference. First operand 230 states and 246 transitions. Second operand 10 states. [2020-07-07 12:25:01,540 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:01,976 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:02,327 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:25:02,740 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:02,987 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:03,201 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:04,150 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:06,174 INFO L93 Difference]: Finished difference Result 621 states and 722 transitions. [2020-07-07 12:25:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:06,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-07 12:25:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:06,185 INFO L225 Difference]: With dead ends: 621 [2020-07-07 12:25:06,186 INFO L226 Difference]: Without dead ends: 501 [2020-07-07 12:25:06,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:25:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-07-07 12:25:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 398. [2020-07-07 12:25:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-07-07 12:25:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 440 transitions. [2020-07-07 12:25:06,352 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 440 transitions. Word has length 156 [2020-07-07 12:25:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:06,353 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 440 transitions. [2020-07-07 12:25:06,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 440 transitions. [2020-07-07 12:25:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:25:06,356 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:06,356 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 12:25:06,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:25:06,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:06,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:06,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1641209859, now seen corresponding path program 1 times [2020-07-07 12:25:06,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:06,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254687042] [2020-07-07 12:25:06,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,687 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:06,833 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 12:25:06,833 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:06,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254687042] [2020-07-07 12:25:06,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:06,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:06,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743316921] [2020-07-07 12:25:06,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:06,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:06,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:06,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:06,837 INFO L87 Difference]: Start difference. First operand 398 states and 440 transitions. Second operand 9 states. [2020-07-07 12:25:07,279 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:08,610 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:08,864 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:09,157 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:09,415 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:09,692 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:09,927 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:10,167 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:10,539 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:11,469 INFO L93 Difference]: Finished difference Result 1084 states and 1296 transitions. [2020-07-07 12:25:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:11,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-07-07 12:25:11,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:11,476 INFO L225 Difference]: With dead ends: 1084 [2020-07-07 12:25:11,477 INFO L226 Difference]: Without dead ends: 796 [2020-07-07 12:25:11,479 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 12:25:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2020-07-07 12:25:11,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 647. [2020-07-07 12:25:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-07-07 12:25:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 726 transitions. [2020-07-07 12:25:11,670 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 726 transitions. Word has length 161 [2020-07-07 12:25:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:11,671 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 726 transitions. [2020-07-07 12:25:11,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:25:11,671 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 726 transitions. [2020-07-07 12:25:11,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 12:25:11,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:11,674 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 12:25:11,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:25:11,675 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:11,675 INFO L82 PathProgramCache]: Analyzing trace with hash 804799078, now seen corresponding path program 1 times [2020-07-07 12:25:11,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:11,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358919698] [2020-07-07 12:25:11,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:11,945 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:12,193 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 12:25:12,194 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:12,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358919698] [2020-07-07 12:25:12,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:12,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:12,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87851540] [2020-07-07 12:25:12,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:12,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:12,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:12,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:12,197 INFO L87 Difference]: Start difference. First operand 647 states and 726 transitions. Second operand 10 states. [2020-07-07 12:25:12,658 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:13,974 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:14,268 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:14,527 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:14,822 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:15,054 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:15,599 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:15,858 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:16,261 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:17,075 INFO L93 Difference]: Finished difference Result 1719 states and 2093 transitions. [2020-07-07 12:25:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:25:17,076 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-07-07 12:25:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:17,085 INFO L225 Difference]: With dead ends: 1719 [2020-07-07 12:25:17,085 INFO L226 Difference]: Without dead ends: 1182 [2020-07-07 12:25:17,087 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 12:25:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-07-07 12:25:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 937. [2020-07-07 12:25:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-07-07 12:25:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1073 transitions. [2020-07-07 12:25:17,407 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1073 transitions. Word has length 166 [2020-07-07 12:25:17,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:17,408 INFO L479 AbstractCegarLoop]: Abstraction has 937 states and 1073 transitions. [2020-07-07 12:25:17,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:17,408 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1073 transitions. [2020-07-07 12:25:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-07-07 12:25:17,412 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:17,412 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] [2020-07-07 12:25:17,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:25:17,413 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:17,413 INFO L82 PathProgramCache]: Analyzing trace with hash 633475050, now seen corresponding path program 1 times [2020-07-07 12:25:17,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:17,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122069580] [2020-07-07 12:25:17,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,649 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:17,829 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 12:25:17,830 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:17,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122069580] [2020-07-07 12:25:17,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:17,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:25:17,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831925613] [2020-07-07 12:25:17,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:25:17,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:17,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:25:17,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:25:17,833 INFO L87 Difference]: Start difference. First operand 937 states and 1073 transitions. Second operand 11 states. [2020-07-07 12:25:19,229 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:19,493 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:25:19,762 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:25:20,048 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:20,317 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:20,567 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:22,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:22,266 INFO L93 Difference]: Finished difference Result 2368 states and 2969 transitions. [2020-07-07 12:25:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:25:22,267 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2020-07-07 12:25:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:22,278 INFO L225 Difference]: With dead ends: 2368 [2020-07-07 12:25:22,278 INFO L226 Difference]: Without dead ends: 1541 [2020-07-07 12:25:22,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-07-07 12:25:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2020-07-07 12:25:22,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 975. [2020-07-07 12:25:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-07-07 12:25:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1111 transitions. [2020-07-07 12:25:22,619 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1111 transitions. Word has length 194 [2020-07-07 12:25:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:22,619 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1111 transitions. [2020-07-07 12:25:22,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:25:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1111 transitions. [2020-07-07 12:25:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-07-07 12:25:22,623 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:22,624 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] [2020-07-07 12:25:22,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:25:22,624 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash -788765814, now seen corresponding path program 1 times [2020-07-07 12:25:22,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:22,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840205145] [2020-07-07 12:25:22,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,862 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:23,057 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 12:25:23,058 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:23,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840205145] [2020-07-07 12:25:23,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:23,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:25:23,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613149579] [2020-07-07 12:25:23,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:25:23,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:25:23,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:25:23,060 INFO L87 Difference]: Start difference. First operand 975 states and 1111 transitions. Second operand 14 states. [2020-07-07 12:25:23,588 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:23,828 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:25:24,080 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:24,373 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:24,603 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:25,499 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:25,739 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:26,004 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:26,283 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:26,516 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:28,048 INFO L93 Difference]: Finished difference Result 2450 states and 3110 transitions. [2020-07-07 12:25:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:25:28,048 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 194 [2020-07-07 12:25:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:28,059 INFO L225 Difference]: With dead ends: 2450 [2020-07-07 12:25:28,059 INFO L226 Difference]: Without dead ends: 1585 [2020-07-07 12:25:28,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 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 12:25:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2020-07-07 12:25:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 999. [2020-07-07 12:25:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-07-07 12:25:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1135 transitions. [2020-07-07 12:25:28,458 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1135 transitions. Word has length 194 [2020-07-07 12:25:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:28,459 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1135 transitions. [2020-07-07 12:25:28,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:25:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1135 transitions. [2020-07-07 12:25:28,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-07-07 12:25:28,465 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:28,465 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] [2020-07-07 12:25:28,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:25:28,466 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash -580417043, now seen corresponding path program 1 times [2020-07-07 12:25:28,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:28,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769996489] [2020-07-07 12:25:28,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,742 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:28,920 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 12:25:28,921 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:28,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769996489] [2020-07-07 12:25:28,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:28,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 12:25:28,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53127873] [2020-07-07 12:25:28,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 12:25:28,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 12:25:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 12:25:28,924 INFO L87 Difference]: Start difference. First operand 999 states and 1135 transitions. Second operand 8 states. [2020-07-07 12:25:29,433 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:29,947 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:33,802 INFO L93 Difference]: Finished difference Result 3927 states and 5016 transitions. [2020-07-07 12:25:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 12:25:33,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-07-07 12:25:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:33,821 INFO L225 Difference]: With dead ends: 3927 [2020-07-07 12:25:33,821 INFO L226 Difference]: Without dead ends: 3038 [2020-07-07 12:25:33,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-07-07 12:25:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-07-07 12:25:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2139. [2020-07-07 12:25:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-07-07 12:25:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2463 transitions. [2020-07-07 12:25:34,759 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2463 transitions. Word has length 194 [2020-07-07 12:25:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:34,759 INFO L479 AbstractCegarLoop]: Abstraction has 2139 states and 2463 transitions. [2020-07-07 12:25:34,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 12:25:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2463 transitions. [2020-07-07 12:25:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-07 12:25:34,764 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:34,764 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] [2020-07-07 12:25:34,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:25:34,764 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:34,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2090495192, now seen corresponding path program 1 times [2020-07-07 12:25:34,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:34,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242638439] [2020-07-07 12:25:34,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:25:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:25:35,047 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:35,047 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:25:35,047 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:25:35,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:25:35,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:25:35 BoogieIcfgContainer [2020-07-07 12:25:35,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:25:35,076 INFO L168 Benchmark]: Toolchain (without parser) took 41257.39 ms. Allocated memory was 146.3 MB in the beginning and 923.8 MB in the end (delta: 777.5 MB). Free memory was 102.3 MB in the beginning and 225.5 MB in the end (delta: -123.3 MB). Peak memory consumption was 654.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:35,076 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 12:25:35,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.16 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 171.8 MB in the end (delta: -69.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:35,078 INFO L168 Benchmark]: Boogie Preprocessor took 89.59 ms. Allocated memory is still 203.4 MB. Free memory was 171.8 MB in the beginning and 167.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:35,079 INFO L168 Benchmark]: RCFGBuilder took 1247.35 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.9 MB in the beginning and 175.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:35,080 INFO L168 Benchmark]: TraceAbstraction took 39250.29 ms. Allocated memory was 235.4 MB in the beginning and 923.8 MB in the end (delta: 688.4 MB). Free memory was 175.4 MB in the beginning and 225.5 MB in the end (delta: -50.2 MB). Peak memory consumption was 638.2 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:35,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.16 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 171.8 MB in the end (delta: -69.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.59 ms. Allocated memory is still 203.4 MB. Free memory was 171.8 MB in the beginning and 167.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1247.35 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.9 MB in the beginning and 175.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39250.29 ms. Allocated memory was 235.4 MB in the beginning and 923.8 MB in the end (delta: 688.4 MB). Free memory was 175.4 MB in the beginning and 225.5 MB in the end (delta: -50.2 MB). Peak memory consumption was 638.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L376] CALL startSystem() [L231] systemActive = 1 [L376] RET startSystem() [L391] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; [L200] CALL, EXPR isHighWaterSensorDry() [L319] int retValue_acc ; [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); [L200] RET, EXPR isHighWaterSensorDry() [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) [L106] CALL activatePump() [L125] pumpRunning = 1 [L106] RET activatePump() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification1_spec__1() [L808] int tmp ; [L809] int tmp___0 ; [L813] CALL, EXPR isMethaneLevelCritical() [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L813] RET, EXPR isMethaneLevelCritical() [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) [L817] CALL, EXPR isPumpRunning() [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); [L817] RET, EXPR isPumpRunning() [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) [L821] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 616 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 31.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1860 SDtfs, 4352 SDslu, 4158 SDs, 0 SdLazy, 8128 SolverSat, 1462 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2139occurred 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: 2.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 2625 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...