/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:58:50,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:58:50,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:58:50,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:58:50,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:58:50,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:58:50,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:58:50,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:58:50,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:58:50,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:58:50,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:58:50,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:58:50,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:58:50,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:58:50,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:58:50,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:58:50,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:58:50,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:58:50,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:58:50,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:58:50,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:58:50,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:58:50,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:58:50,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:58:50,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:58:50,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:58:50,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:58:50,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:58:50,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:58:50,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:58:50,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:58:50,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:58:50,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:58:50,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:58:50,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:58:50,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:58:50,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:58:50,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:58:50,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:58:50,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:58:50,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:58:50,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:58:50,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:58:50,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:58:50,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:58:50,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:58:50,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:58:50,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:58:50,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:58:50,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:58:50,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:58:50,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:58:50,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:58:50,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:58:50,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:58:50,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:58:50,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:58:50,377 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:58:50,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:58:50,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:58:50,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:58:50,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:58:50,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:58:50,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:58:50,378 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:58:50,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:58:50,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:58:50,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:58:50,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:58:50,681 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:58:50,682 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-22 17:58:50,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ad6673d9/ed4b7fc7b53b4a3789edced3bb78d3d4/FLAG36de56312 [2020-08-22 17:58:51,265 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:58:51,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-22 17:58:51,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ad6673d9/ed4b7fc7b53b4a3789edced3bb78d3d4/FLAG36de56312 [2020-08-22 17:58:51,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ad6673d9/ed4b7fc7b53b4a3789edced3bb78d3d4 [2020-08-22 17:58:51,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:58:51,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:58:51,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:58:51,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:58:51,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:58:51,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:58:51" (1/1) ... [2020-08-22 17:58:51,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9a5625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:51, skipping insertion in model container [2020-08-22 17:58:51,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:58:51" (1/1) ... [2020-08-22 17:58:51,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:58:51,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:58:52,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:58:52,022 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:58:52,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:58:52,158 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:58:52,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52 WrapperNode [2020-08-22 17:58:52,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:58:52,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:58:52,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:58:52,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:58:52,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (1/1) ... [2020-08-22 17:58:52,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (1/1) ... [2020-08-22 17:58:52,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (1/1) ... [2020-08-22 17:58:52,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (1/1) ... [2020-08-22 17:58:52,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (1/1) ... [2020-08-22 17:58:52,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (1/1) ... [2020-08-22 17:58:52,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (1/1) ... [2020-08-22 17:58:52,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:58:52,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:58:52,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:58:52,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:58:52,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:58:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:58:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:58:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:58:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:58:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:58:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:58:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:58:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:58:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:58:52,415 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:58:52,415 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:58:52,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:58:52,416 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:58:52,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:58:52,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:58:52,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:58:52,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 17:58:52,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 17:58:52,417 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:58:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:58:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:58:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:58:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:58:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:58:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:58:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:58:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:58:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:58:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:58:52,422 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 17:58:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:58:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:58:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:58:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:58:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:58:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:58:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:58:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:58:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:58:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:58:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 17:58:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:58:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:58:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:58:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:58:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:58:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:58:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:58:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:58:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:58:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:58:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:58:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:58:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:58:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:58:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 17:58:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:58:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:58:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:58:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:58:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:58:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:58:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:58:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:58:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:58:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:58:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:58:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:58:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:58:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:58:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:58:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:58:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:58:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 17:58:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:58:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:58:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:58:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:58:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:58:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:58:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:58:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:58:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:58:53,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:58:53,495 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:58:53,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:58:53 BoogieIcfgContainer [2020-08-22 17:58:53,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:58:53,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:58:53,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:58:53,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:58:53,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:58:51" (1/3) ... [2020-08-22 17:58:53,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8b6614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:58:53, skipping insertion in model container [2020-08-22 17:58:53,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:58:52" (2/3) ... [2020-08-22 17:58:53,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8b6614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:58:53, skipping insertion in model container [2020-08-22 17:58:53,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:58:53" (3/3) ... [2020-08-22 17:58:53,510 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2020-08-22 17:58:53,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:58:53,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:58:53,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:58:53,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:58:53,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:58:53,565 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:58:53,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:58:53,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:58:53,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:58:53,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:58:53,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:58:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-08-22 17:58:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 17:58:53,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:53,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:58:53,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:53,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:53,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2110285638, now seen corresponding path program 1 times [2020-08-22 17:58:53,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:53,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057930124] [2020-08-22 17:58:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:53,692 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:58:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,286 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:58:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:58:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:58:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:58:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:58:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:58:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:58:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:58:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:58:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:58:54,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057930124] [2020-08-22 17:58:54,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:58:54,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:58:54,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846602048] [2020-08-22 17:58:54,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:58:54,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:58:54,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:58:54,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:58:54,549 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 4 states. [2020-08-22 17:58:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:58:55,732 INFO L93 Difference]: Finished difference Result 442 states and 524 transitions. [2020-08-22 17:58:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 17:58:55,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-22 17:58:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:58:55,751 INFO L225 Difference]: With dead ends: 442 [2020-08-22 17:58:55,751 INFO L226 Difference]: Without dead ends: 287 [2020-08-22 17:58:55,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:58:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-22 17:58:55,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 240. [2020-08-22 17:58:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 17:58:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 259 transitions. [2020-08-22 17:58:55,891 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 259 transitions. Word has length 148 [2020-08-22 17:58:55,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:58:55,892 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 259 transitions. [2020-08-22 17:58:55,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:58:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 259 transitions. [2020-08-22 17:58:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 17:58:55,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:55,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:58:55,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:58:55,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:55,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:55,898 INFO L82 PathProgramCache]: Analyzing trace with hash 16536712, now seen corresponding path program 1 times [2020-08-22 17:58:55,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:55,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866133482] [2020-08-22 17:58:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:55,902 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:58:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,296 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:58:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:58:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:58:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:58:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:58:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:58:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:58:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 17:58:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:58:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:58:56,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866133482] [2020-08-22 17:58:56,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:58:56,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 17:58:56,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636978214] [2020-08-22 17:58:56,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 17:58:56,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:58:56,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 17:58:56,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:58:56,410 INFO L87 Difference]: Start difference. First operand 240 states and 259 transitions. Second operand 5 states. [2020-08-22 17:58:57,075 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:58:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:58:57,874 INFO L93 Difference]: Finished difference Result 367 states and 415 transitions. [2020-08-22 17:58:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 17:58:57,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-08-22 17:58:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:58:57,880 INFO L225 Difference]: With dead ends: 367 [2020-08-22 17:58:57,880 INFO L226 Difference]: Without dead ends: 276 [2020-08-22 17:58:57,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:58:57,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-08-22 17:58:57,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 230. [2020-08-22 17:58:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-22 17:58:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 246 transitions. [2020-08-22 17:58:57,985 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 246 transitions. Word has length 149 [2020-08-22 17:58:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:58:57,986 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 246 transitions. [2020-08-22 17:58:57,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 17:58:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 246 transitions. [2020-08-22 17:58:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 17:58:57,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:58:57,989 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] [2020-08-22 17:58:57,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:58:57,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:58:57,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:58:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1541802730, now seen corresponding path program 1 times [2020-08-22 17:58:57,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:58:57,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362248379] [2020-08-22 17:58:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:58:57,993 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:58:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,313 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:58:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:58:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:58:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:58:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:58:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:58:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:58:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:58:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:58:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:58:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:58:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:58:58,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362248379] [2020-08-22 17:58:58,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:58:58,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:58:58,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375412233] [2020-08-22 17:58:58,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:58:58,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:58:58,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:58:58,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:58:58,499 INFO L87 Difference]: Start difference. First operand 230 states and 246 transitions. Second operand 11 states. [2020-08-22 17:58:59,009 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:58:59,409 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:58:59,765 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 17:59:00,148 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:00,504 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:00,768 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:02,221 INFO L93 Difference]: Finished difference Result 414 states and 480 transitions. [2020-08-22 17:59:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:59:02,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-08-22 17:59:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:02,225 INFO L225 Difference]: With dead ends: 414 [2020-08-22 17:59:02,225 INFO L226 Difference]: Without dead ends: 299 [2020-08-22 17:59:02,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:59:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-08-22 17:59:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 230. [2020-08-22 17:59:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-22 17:59:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 245 transitions. [2020-08-22 17:59:02,301 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 245 transitions. Word has length 162 [2020-08-22 17:59:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:02,301 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 245 transitions. [2020-08-22 17:59:02,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:59:02,302 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 245 transitions. [2020-08-22 17:59:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-22 17:59:02,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:02,304 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] [2020-08-22 17:59:02,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:59:02,305 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:02,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1425032231, now seen corresponding path program 1 times [2020-08-22 17:59:02,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:02,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761351493] [2020-08-22 17:59:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:02,308 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,632 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:02,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:59:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:59:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 17:59:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:59:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:02,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761351493] [2020-08-22 17:59:02,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:02,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 17:59:02,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565206320] [2020-08-22 17:59:02,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 17:59:02,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:02,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 17:59:02,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 17:59:02,799 INFO L87 Difference]: Start difference. First operand 230 states and 245 transitions. Second operand 8 states. [2020-08-22 17:59:03,254 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:04,864 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:05,624 INFO L93 Difference]: Finished difference Result 593 states and 710 transitions. [2020-08-22 17:59:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 17:59:05,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2020-08-22 17:59:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:05,630 INFO L225 Difference]: With dead ends: 593 [2020-08-22 17:59:05,631 INFO L226 Difference]: Without dead ends: 478 [2020-08-22 17:59:05,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:59:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-22 17:59:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 337. [2020-08-22 17:59:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-08-22 17:59:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 364 transitions. [2020-08-22 17:59:05,774 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 364 transitions. Word has length 170 [2020-08-22 17:59:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:05,775 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 364 transitions. [2020-08-22 17:59:05,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 17:59:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 364 transitions. [2020-08-22 17:59:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-08-22 17:59:05,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:05,778 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] [2020-08-22 17:59:05,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:59:05,779 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1572233247, now seen corresponding path program 1 times [2020-08-22 17:59:05,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:05,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021945814] [2020-08-22 17:59:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:05,782 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,089 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:06,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:59:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:59:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:59:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:59:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:06,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021945814] [2020-08-22 17:59:06,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:06,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:59:06,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690227075] [2020-08-22 17:59:06,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:59:06,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:06,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:59:06,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:59:06,298 INFO L87 Difference]: Start difference. First operand 337 states and 364 transitions. Second operand 11 states. [2020-08-22 17:59:06,839 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:08,417 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:08,674 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:08,948 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:09,230 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:09,482 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:09,717 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:09,964 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:10,318 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:11,722 INFO L93 Difference]: Finished difference Result 984 states and 1211 transitions. [2020-08-22 17:59:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 17:59:11,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2020-08-22 17:59:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:11,730 INFO L225 Difference]: With dead ends: 984 [2020-08-22 17:59:11,730 INFO L226 Difference]: Without dead ends: 762 [2020-08-22 17:59:11,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-08-22 17:59:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-08-22 17:59:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 513. [2020-08-22 17:59:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-22 17:59:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 559 transitions. [2020-08-22 17:59:11,905 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 559 transitions. Word has length 194 [2020-08-22 17:59:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:11,906 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 559 transitions. [2020-08-22 17:59:11,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:59:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 559 transitions. [2020-08-22 17:59:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-22 17:59:11,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:11,910 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] [2020-08-22 17:59:11,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:59:11,910 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:11,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:11,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1795239893, now seen corresponding path program 1 times [2020-08-22 17:59:11,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:11,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010088447] [2020-08-22 17:59:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:11,914 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,199 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:59:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:59:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-22 17:59:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-22 17:59:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:12,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010088447] [2020-08-22 17:59:12,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:12,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 17:59:12,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782474050] [2020-08-22 17:59:12,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 17:59:12,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:12,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 17:59:12,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 17:59:12,444 INFO L87 Difference]: Start difference. First operand 513 states and 559 transitions. Second operand 12 states. [2020-08-22 17:59:12,986 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:14,515 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:14,763 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:15,002 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:15,243 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:15,577 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:15,861 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:59:16,093 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:16,336 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:17,878 INFO L93 Difference]: Finished difference Result 1290 states and 1569 transitions. [2020-08-22 17:59:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 17:59:17,879 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 199 [2020-08-22 17:59:17,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:17,887 INFO L225 Difference]: With dead ends: 1290 [2020-08-22 17:59:17,887 INFO L226 Difference]: Without dead ends: 892 [2020-08-22 17:59:17,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 17:59:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-22 17:59:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 511. [2020-08-22 17:59:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-22 17:59:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 555 transitions. [2020-08-22 17:59:18,075 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 555 transitions. Word has length 199 [2020-08-22 17:59:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:18,076 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 555 transitions. [2020-08-22 17:59:18,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 17:59:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 555 transitions. [2020-08-22 17:59:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:59:18,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:18,080 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] [2020-08-22 17:59:18,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:59:18,080 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:18,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1512917738, now seen corresponding path program 1 times [2020-08-22 17:59:18,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:18,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994627660] [2020-08-22 17:59:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:18,084 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,336 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:18,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:59:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:59:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:59:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:59:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:18,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994627660] [2020-08-22 17:59:18,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:18,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 17:59:18,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057269068] [2020-08-22 17:59:18,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 17:59:18,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:18,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 17:59:18,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 17:59:18,530 INFO L87 Difference]: Start difference. First operand 511 states and 555 transitions. Second operand 12 states. [2020-08-22 17:59:19,834 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:20,073 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:20,324 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 17:59:20,601 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:20,840 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:21,069 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:22,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:22,887 INFO L93 Difference]: Finished difference Result 1298 states and 1591 transitions. [2020-08-22 17:59:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 17:59:22,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2020-08-22 17:59:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:22,894 INFO L225 Difference]: With dead ends: 1298 [2020-08-22 17:59:22,895 INFO L226 Difference]: Without dead ends: 902 [2020-08-22 17:59:22,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2020-08-22 17:59:22,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-08-22 17:59:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 527. [2020-08-22 17:59:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-22 17:59:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 571 transitions. [2020-08-22 17:59:23,110 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 571 transitions. Word has length 200 [2020-08-22 17:59:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:23,111 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 571 transitions. [2020-08-22 17:59:23,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 17:59:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 571 transitions. [2020-08-22 17:59:23,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:59:23,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:23,118 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] [2020-08-22 17:59:23,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:59:23,118 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:23,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1642255734, now seen corresponding path program 1 times [2020-08-22 17:59:23,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:23,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042334378] [2020-08-22 17:59:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:23,124 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,398 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:23,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:59:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:59:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:59:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:59:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:23,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042334378] [2020-08-22 17:59:23,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:23,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 17:59:23,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667099481] [2020-08-22 17:59:23,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 17:59:23,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:23,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 17:59:23,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-08-22 17:59:23,626 INFO L87 Difference]: Start difference. First operand 527 states and 571 transitions. Second operand 15 states. [2020-08-22 17:59:24,330 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:59:24,630 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:59:24,854 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:25,143 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:25,358 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:26,220 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:26,455 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:26,715 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:26,969 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:59:27,200 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:59:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:28,977 INFO L93 Difference]: Finished difference Result 1336 states and 1656 transitions. [2020-08-22 17:59:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 17:59:28,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 200 [2020-08-22 17:59:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:28,990 INFO L225 Difference]: With dead ends: 1336 [2020-08-22 17:59:28,990 INFO L226 Difference]: Without dead ends: 924 [2020-08-22 17:59:28,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 17:59:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-08-22 17:59:29,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 539. [2020-08-22 17:59:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-08-22 17:59:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 583 transitions. [2020-08-22 17:59:29,243 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 583 transitions. Word has length 200 [2020-08-22 17:59:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:29,243 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 583 transitions. [2020-08-22 17:59:29,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 17:59:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 583 transitions. [2020-08-22 17:59:29,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:59:29,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:29,247 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] [2020-08-22 17:59:29,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:59:29,248 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash -488866957, now seen corresponding path program 1 times [2020-08-22 17:59:29,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:29,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737208121] [2020-08-22 17:59:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:29,252 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,523 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:29,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:59:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:59:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:59:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:59:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:59:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:29,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737208121] [2020-08-22 17:59:29,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:29,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:59:29,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257133949] [2020-08-22 17:59:29,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:59:29,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:29,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:59:29,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:59:29,727 INFO L87 Difference]: Start difference. First operand 539 states and 583 transitions. Second operand 9 states. [2020-08-22 17:59:30,271 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:31,014 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:34,272 INFO L93 Difference]: Finished difference Result 2025 states and 2572 transitions. [2020-08-22 17:59:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 17:59:34,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2020-08-22 17:59:34,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:34,282 INFO L225 Difference]: With dead ends: 2025 [2020-08-22 17:59:34,283 INFO L226 Difference]: Without dead ends: 1601 [2020-08-22 17:59:34,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 17:59:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2020-08-22 17:59:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 957. [2020-08-22 17:59:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-08-22 17:59:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1063 transitions. [2020-08-22 17:59:34,625 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1063 transitions. Word has length 200 [2020-08-22 17:59:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:34,626 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1063 transitions. [2020-08-22 17:59:34,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:59:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1063 transitions. [2020-08-22 17:59:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-08-22 17:59:34,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:34,629 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] [2020-08-22 17:59:34,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:59:34,629 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:34,629 INFO L82 PathProgramCache]: Analyzing trace with hash -390526145, now seen corresponding path program 1 times [2020-08-22 17:59:34,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:34,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659324492] [2020-08-22 17:59:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:34,632 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,876 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:59:34,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:59:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 17:59:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:59:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 17:59:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 17:59:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 17:59:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:59:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:59:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:59:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 17:59:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:59:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:59:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:59:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 17:59:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-08-22 17:59:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:59:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:59:35,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659324492] [2020-08-22 17:59:35,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:59:35,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:59:35,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275922142] [2020-08-22 17:59:35,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:59:35,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:59:35,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:59:35,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:59:35,020 INFO L87 Difference]: Start difference. First operand 957 states and 1063 transitions. Second operand 9 states. [2020-08-22 17:59:35,538 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:59:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:59:38,749 INFO L93 Difference]: Finished difference Result 2467 states and 3159 transitions. [2020-08-22 17:59:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 17:59:38,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2020-08-22 17:59:38,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:59:38,767 INFO L225 Difference]: With dead ends: 2467 [2020-08-22 17:59:38,767 INFO L226 Difference]: Without dead ends: 2464 [2020-08-22 17:59:38,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 17:59:38,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2020-08-22 17:59:39,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1476. [2020-08-22 17:59:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2020-08-22 17:59:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1655 transitions. [2020-08-22 17:59:39,417 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1655 transitions. Word has length 205 [2020-08-22 17:59:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:59:39,418 INFO L479 AbstractCegarLoop]: Abstraction has 1476 states and 1655 transitions. [2020-08-22 17:59:39,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:59:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1655 transitions. [2020-08-22 17:59:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-08-22 17:59:39,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:59:39,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:59:39,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:59:39,424 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:59:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:59:39,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1476221887, now seen corresponding path program 1 times [2020-08-22 17:59:39,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:59:39,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912835355] [2020-08-22 17:59:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:59:39,470 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:59:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:59:39,531 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:59:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:59:39,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:59:39,955 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:59:39,955 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:59:39,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 17:59:39,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:59:39 BoogieIcfgContainer [2020-08-22 17:59:39,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:59:39,992 INFO L168 Benchmark]: Toolchain (without parser) took 48441.51 ms. Allocated memory was 139.5 MB in the beginning and 888.7 MB in the end (delta: 749.2 MB). Free memory was 102.3 MB in the beginning and 602.5 MB in the end (delta: -500.2 MB). Peak memory consumption was 249.0 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:39,993 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 17:59:39,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.13 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 172.1 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:39,994 INFO L168 Benchmark]: Boogie Preprocessor took 163.29 ms. Allocated memory is still 203.9 MB. Free memory was 172.1 MB in the beginning and 167.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:39,995 INFO L168 Benchmark]: RCFGBuilder took 1178.48 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 167.6 MB in the beginning and 177.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:39,996 INFO L168 Benchmark]: TraceAbstraction took 46487.48 ms. Allocated memory was 236.5 MB in the beginning and 888.7 MB in the end (delta: 652.2 MB). Free memory was 175.6 MB in the beginning and 602.5 MB in the end (delta: -426.9 MB). Peak memory consumption was 225.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:59:39,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 607.13 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 172.1 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.29 ms. Allocated memory is still 203.9 MB. Free memory was 172.1 MB in the beginning and 167.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1178.48 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 167.6 MB in the beginning and 177.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46487.48 ms. Allocated memory was 236.5 MB in the beginning and 888.7 MB in the end (delta: 652.2 MB). Free memory was 175.6 MB in the beginning and 602.5 MB in the end (delta: -426.9 MB). Peak memory consumption was 225.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 249]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L255] int methAndRunningLastTime ; [L498] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int pumpRunning = 0; [L766] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L320] int retValue_acc ; [L323] retValue_acc = 1 [L324] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L113] CALL __utac_acc__Specification2_spec__1() [L260] methAndRunningLastTime = 0 [L113] RET __utac_acc__Specification2_spec__1() [L114] CALL test() [L697] int splverifierCounter ; [L698] int tmp ; [L699] int tmp___0 ; [L700] int tmp___1 ; [L701] int tmp___2 ; [L704] splverifierCounter = 0 [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp) [L718] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L718] RET waterRise() [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___0) [L728] CALL changeMethaneLevel() [L181] COND FALSE !(\read(methaneLevelCritical)) [L184] methaneLevelCritical = 1 [L728] RET changeMethaneLevel() [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND TRUE \read(tmp___2) [L738] CALL startSystem() [L920] systemActive = 1 [L738] RET startSystem() [L751] CALL timeShift() [L772] COND FALSE !(\read(pumpRunning)) [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND TRUE ! pumpRunning [L806] CALL, EXPR isHighWaterLevel() [L898] int retValue_acc ; [L899] int tmp ; [L900] int tmp___0 ; [L904] CALL, EXPR isHighWaterSensorDry() [L231] int retValue_acc ; [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); [L904] RET, EXPR isHighWaterSensorDry() [L904] tmp = isHighWaterSensorDry() [L906] COND FALSE !(\read(tmp)) [L909] tmp___0 = 1 [L911] retValue_acc = tmp___0 [L912] return (retValue_acc); [L806] RET, EXPR isHighWaterLevel() [L806] tmp = isHighWaterLevel() [L808] COND TRUE \read(tmp) [L810] CALL activatePump() [L829] pumpRunning = 1 [L810] RET activatePump() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND FALSE !(\read(methAndRunningLastTime)) [L282] methAndRunningLastTime = 1 [L787] RET __utac_acc__Specification2_spec__2() [L751] RET timeShift() [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp)) [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp___0)) [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND TRUE \read(tmp___2) [L738] CALL startSystem() [L920] systemActive = 1 [L738] RET startSystem() [L751] CALL timeShift() [L772] COND TRUE \read(pumpRunning) [L774] CALL lowerWaterLevel() [L157] COND TRUE waterLevel > 0 [L158] waterLevel = waterLevel - 1 [L774] RET lowerWaterLevel() [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND FALSE !(! pumpRunning) [L819] FCALL processEnvironment__wrappee__base() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND TRUE \read(methAndRunningLastTime) [L279] CALL __automaton_fail() [L249] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 619 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.3s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 38.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2274 SDtfs, 8327 SDslu, 4945 SDs, 0 SdLazy, 9731 SolverSat, 2332 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 542 GetRequests, 300 SyntacticMatches, 2 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1476occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 3325 StatesRemovedByMinimization, 10 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...