/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:55:28,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:55:28,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:55:28,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:55:28,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:55:28,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:55:28,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:55:28,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:55:28,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:55:28,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:55:28,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:55:28,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:55:28,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:55:28,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:55:28,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:55:28,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:55:28,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:55:28,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:55:28,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:55:28,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:55:28,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:55:28,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:55:28,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:55:28,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:55:28,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:55:28,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:55:28,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:55:28,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:55:28,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:55:28,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:55:28,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:55:28,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:55:28,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:55:28,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:55:28,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:55:28,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:55:28,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:55:28,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:55:28,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:55:28,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:55:28,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:55:28,144 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 17:55:28,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:55:28,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:55:28,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:55:28,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:55:28,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:55:28,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:55:28,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:55:28,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:55:28,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:55:28,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:55:28,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:55:28,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:55:28,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:55:28,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:55:28,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:55:28,157 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:55:28,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:55:28,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:55:28,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:55:28,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:55:28,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:55:28,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:55:28,159 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:55:28,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:55:28,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:55:28,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:55:28,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:55:28,500 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:55:28,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-08-22 17:55:28,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb26637fe/73f70da4c6154837b843ef7d0b2185c2/FLAG4dfe24b54 [2020-08-22 17:55:29,114 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:55:29,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-08-22 17:55:29,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb26637fe/73f70da4c6154837b843ef7d0b2185c2/FLAG4dfe24b54 [2020-08-22 17:55:29,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb26637fe/73f70da4c6154837b843ef7d0b2185c2 [2020-08-22 17:55:29,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:55:29,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:55:29,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:55:29,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:55:29,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:55:29,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:55:29" (1/1) ... [2020-08-22 17:55:29,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47743781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:29, skipping insertion in model container [2020-08-22 17:55:29,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:55:29" (1/1) ... [2020-08-22 17:55:29,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:55:29,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:55:29,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:55:30,004 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:55:30,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:55:30,133 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:55:30,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30 WrapperNode [2020-08-22 17:55:30,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:55:30,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:55:30,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:55:30,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:55:30,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:55:30,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:55:30,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:55:30,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:55:30,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (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 17:55:30,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:55:30,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:55:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:55:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:55:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:55:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:55:30,325 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:55:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:55:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:55:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:55:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 17:55:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 17:55:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:55:30,327 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:55:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:55:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:55:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:55:30,328 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:55:30,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:55:30,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 17:55:30,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 17:55:30,330 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:55:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:55:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:55:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:55:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:55:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:55:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:55:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 17:55:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:55:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:55:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:55:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:55:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:55:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:55:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:55:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:55:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:55:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:55:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:55:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:55:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:55:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:55:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:55:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:55:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:55:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:55:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:55:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:55:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:55:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:55:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 17:55:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:55:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:55:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:55:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:55:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:55:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:55:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:55:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 17:55:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:55:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:55:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:55:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:55:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:55:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:55:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:55:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:55:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 17:55:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 17:55:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 17:55:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:55:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:55:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:55:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:55:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:55:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:55:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:55:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:55:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:55:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:55:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:55:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:55:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:55:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:55:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:55:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:55:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:55:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:55:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:55:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:55:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:55:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:55:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:55:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:55:30,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:55:30,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:55:30,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:55:31,545 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:55:31,545 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:55:31,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:55:31 BoogieIcfgContainer [2020-08-22 17:55:31,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:55:31,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:55:31,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:55:31,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:55:31,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:55:29" (1/3) ... [2020-08-22 17:55:31,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbce1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:55:31, skipping insertion in model container [2020-08-22 17:55:31,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30" (2/3) ... [2020-08-22 17:55:31,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbce1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:55:31, skipping insertion in model container [2020-08-22 17:55:31,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:55:31" (3/3) ... [2020-08-22 17:55:31,567 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-08-22 17:55:31,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:55:31,587 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:55:31,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:55:31,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:55:31,615 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:55:31,615 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:55:31,615 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:55:31,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:55:31,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:55:31,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:55:31,616 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:55:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2020-08-22 17:55:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 17:55:31,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:31,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:31,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:31,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:31,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2046718669, now seen corresponding path program 1 times [2020-08-22 17:55:31,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:31,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879460588] [2020-08-22 17:55:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:31,737 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:32,374 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:32,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:32,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:32,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:32,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:55:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:32,575 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 17:55:32,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879460588] [2020-08-22 17:55:32,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:32,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 17:55:32,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226738975] [2020-08-22 17:55:32,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 17:55:32,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:32,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 17:55:32,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:55:32,614 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 3 states. [2020-08-22 17:55:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:34,081 INFO L93 Difference]: Finished difference Result 545 states and 652 transitions. [2020-08-22 17:55:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 17:55:34,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 17:55:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:34,102 INFO L225 Difference]: With dead ends: 545 [2020-08-22 17:55:34,102 INFO L226 Difference]: Without dead ends: 332 [2020-08-22 17:55:34,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:55:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-22 17:55:34,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 287. [2020-08-22 17:55:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-08-22 17:55:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 316 transitions. [2020-08-22 17:55:34,268 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 316 transitions. Word has length 142 [2020-08-22 17:55:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:34,269 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 316 transitions. [2020-08-22 17:55:34,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 17:55:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 316 transitions. [2020-08-22 17:55:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 17:55:34,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:34,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:34,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:55:34,275 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:34,275 INFO L82 PathProgramCache]: Analyzing trace with hash 69871948, now seen corresponding path program 1 times [2020-08-22 17:55:34,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:34,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837257930] [2020-08-22 17:55:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:34,280 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:34,624 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:34,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:34,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:55:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:55:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:34,720 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 17:55:34,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837257930] [2020-08-22 17:55:34,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:34,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:55:34,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194917987] [2020-08-22 17:55:34,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:55:34,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:34,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:55:34,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:55:34,724 INFO L87 Difference]: Start difference. First operand 287 states and 316 transitions. Second operand 4 states. [2020-08-22 17:55:35,278 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:36,452 INFO L93 Difference]: Finished difference Result 456 states and 519 transitions. [2020-08-22 17:55:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:55:36,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 17:55:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:36,461 INFO L225 Difference]: With dead ends: 456 [2020-08-22 17:55:36,461 INFO L226 Difference]: Without dead ends: 315 [2020-08-22 17:55:36,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:55:36,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-08-22 17:55:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 277. [2020-08-22 17:55:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-22 17:55:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 303 transitions. [2020-08-22 17:55:36,571 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 303 transitions. Word has length 143 [2020-08-22 17:55:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:36,572 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 303 transitions. [2020-08-22 17:55:36,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:55:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 303 transitions. [2020-08-22 17:55:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 17:55:36,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:36,575 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] [2020-08-22 17:55:36,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:55:36,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:36,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:36,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1405476844, now seen corresponding path program 1 times [2020-08-22 17:55:36,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:36,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285876690] [2020-08-22 17:55:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:36,579 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,930 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:36,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:55:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 17:55:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:37,063 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 17:55:37,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285876690] [2020-08-22 17:55:37,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:37,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:55:37,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089137379] [2020-08-22 17:55:37,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:55:37,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:37,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:55:37,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:55:37,066 INFO L87 Difference]: Start difference. First operand 277 states and 303 transitions. Second operand 9 states. [2020-08-22 17:55:37,583 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:37,900 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:38,135 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:38,386 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:38,627 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:38,887 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:39,790 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:42,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:42,487 INFO L93 Difference]: Finished difference Result 746 states and 866 transitions. [2020-08-22 17:55:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 17:55:42,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-08-22 17:55:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:42,495 INFO L225 Difference]: With dead ends: 746 [2020-08-22 17:55:42,495 INFO L226 Difference]: Without dead ends: 579 [2020-08-22 17:55:42,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-08-22 17:55:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-08-22 17:55:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 508. [2020-08-22 17:55:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-08-22 17:55:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 574 transitions. [2020-08-22 17:55:42,675 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 574 transitions. Word has length 152 [2020-08-22 17:55:42,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:42,675 INFO L479 AbstractCegarLoop]: Abstraction has 508 states and 574 transitions. [2020-08-22 17:55:42,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:55:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 574 transitions. [2020-08-22 17:55:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 17:55:42,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:42,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:42,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:55:42,680 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:42,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1864711332, now seen corresponding path program 1 times [2020-08-22 17:55:42,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:42,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188733624] [2020-08-22 17:55:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:42,683 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:42,962 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:42,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:43,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:43,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:43,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 17:55:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:43,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:55:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:55:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:43,091 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 17:55:43,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188733624] [2020-08-22 17:55:43,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:43,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:55:43,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119099850] [2020-08-22 17:55:43,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:55:43,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:43,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:55:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:55:43,096 INFO L87 Difference]: Start difference. First operand 508 states and 574 transitions. Second operand 9 states. [2020-08-22 17:55:43,796 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:45,152 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:45,432 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:45,923 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:46,193 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:46,730 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:47,104 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:47,383 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:47,954 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:49,163 INFO L93 Difference]: Finished difference Result 1427 states and 1716 transitions. [2020-08-22 17:55:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:55:49,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-08-22 17:55:49,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:49,179 INFO L225 Difference]: With dead ends: 1427 [2020-08-22 17:55:49,179 INFO L226 Difference]: Without dead ends: 1029 [2020-08-22 17:55:49,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-08-22 17:55:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-08-22 17:55:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 867. [2020-08-22 17:55:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-22 17:55:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 994 transitions. [2020-08-22 17:55:49,687 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 994 transitions. Word has length 161 [2020-08-22 17:55:49,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:49,689 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 994 transitions. [2020-08-22 17:55:49,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:55:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 994 transitions. [2020-08-22 17:55:49,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 17:55:49,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:49,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:49,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:55:49,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:49,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:49,704 INFO L82 PathProgramCache]: Analyzing trace with hash 206285744, now seen corresponding path program 1 times [2020-08-22 17:55:49,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:49,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588445919] [2020-08-22 17:55:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:49,708 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,031 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:55:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:55:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 17:55:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:50,192 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 17:55:50,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588445919] [2020-08-22 17:55:50,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:50,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:55:50,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554341643] [2020-08-22 17:55:50,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:55:50,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:50,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:55:50,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:55:50,196 INFO L87 Difference]: Start difference. First operand 867 states and 994 transitions. Second operand 10 states. [2020-08-22 17:55:50,739 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:52,004 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:52,246 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:52,490 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:52,763 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:53,005 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:53,715 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:53,953 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:54,287 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:55,729 INFO L93 Difference]: Finished difference Result 2220 states and 2745 transitions. [2020-08-22 17:55:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 17:55:55,730 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-08-22 17:55:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:55,740 INFO L225 Difference]: With dead ends: 2220 [2020-08-22 17:55:55,740 INFO L226 Difference]: Without dead ends: 1463 [2020-08-22 17:55:55,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-08-22 17:55:55,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-08-22 17:55:56,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1201. [2020-08-22 17:55:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-08-22 17:55:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1393 transitions. [2020-08-22 17:55:56,159 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1393 transitions. Word has length 166 [2020-08-22 17:55:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:56,160 INFO L479 AbstractCegarLoop]: Abstraction has 1201 states and 1393 transitions. [2020-08-22 17:55:56,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1393 transitions. [2020-08-22 17:55:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:55:56,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:56,165 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 17:55:56,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:55:56,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:56,166 INFO L82 PathProgramCache]: Analyzing trace with hash -543136798, now seen corresponding path program 1 times [2020-08-22 17:55:56,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:56,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992287021] [2020-08-22 17:55:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:56,169 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,441 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:55:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 17:55:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 17:55:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:56,648 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 17:55:56,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992287021] [2020-08-22 17:55:56,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:56,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 17:55:56,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979111143] [2020-08-22 17:55:56,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 17:55:56,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:56,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 17:55:56,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-08-22 17:55:56,651 INFO L87 Difference]: Start difference. First operand 1201 states and 1393 transitions. Second operand 13 states. [2020-08-22 17:55:57,201 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:57,498 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:57,726 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:57,953 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:58,168 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:59,064 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:59,313 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:59,591 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:59,857 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:56:00,138 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:01,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:56:01,820 INFO L93 Difference]: Finished difference Result 2708 states and 3381 transitions. [2020-08-22 17:56:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:56:01,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2020-08-22 17:56:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:56:01,831 INFO L225 Difference]: With dead ends: 2708 [2020-08-22 17:56:01,832 INFO L226 Difference]: Without dead ends: 1617 [2020-08-22 17:56:01,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-08-22 17:56:01,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2020-08-22 17:56:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1231. [2020-08-22 17:56:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-08-22 17:56:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1425 transitions. [2020-08-22 17:56:02,317 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1425 transitions. Word has length 200 [2020-08-22 17:56:02,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:56:02,317 INFO L479 AbstractCegarLoop]: Abstraction has 1231 states and 1425 transitions. [2020-08-22 17:56:02,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 17:56:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1425 transitions. [2020-08-22 17:56:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:56:02,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:56:02,322 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 17:56:02,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:56:02,322 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:56:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:56:02,323 INFO L82 PathProgramCache]: Analyzing trace with hash -956768190, now seen corresponding path program 1 times [2020-08-22 17:56:02,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:56:02,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222212445] [2020-08-22 17:56:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:56:02,325 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:56:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,557 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:56:02,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:56:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:56:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:56:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:56:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:56:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:56:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:56:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:56:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:56:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 17:56:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 17:56:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:02,733 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 17:56:02,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222212445] [2020-08-22 17:56:02,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:56:02,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:56:02,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945556713] [2020-08-22 17:56:02,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:56:02,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:56:02,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:56:02,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:56:02,736 INFO L87 Difference]: Start difference. First operand 1231 states and 1425 transitions. Second operand 10 states. [2020-08-22 17:56:04,074 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:56:04,331 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:56:04,673 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:56:04,943 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:05,233 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:56:05,473 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:56:07,029 INFO L93 Difference]: Finished difference Result 2750 states and 3362 transitions. [2020-08-22 17:56:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 17:56:07,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-08-22 17:56:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:56:07,039 INFO L225 Difference]: With dead ends: 2750 [2020-08-22 17:56:07,040 INFO L226 Difference]: Without dead ends: 1629 [2020-08-22 17:56:07,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-08-22 17:56:07,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-08-22 17:56:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1263. [2020-08-22 17:56:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-08-22 17:56:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1457 transitions. [2020-08-22 17:56:07,573 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1457 transitions. Word has length 200 [2020-08-22 17:56:07,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:56:07,574 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1457 transitions. [2020-08-22 17:56:07,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:56:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1457 transitions. [2020-08-22 17:56:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:56:07,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:56:07,579 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 17:56:07,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:56:07,579 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:56:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:56:07,580 INFO L82 PathProgramCache]: Analyzing trace with hash -612654907, now seen corresponding path program 1 times [2020-08-22 17:56:07,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:56:07,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569663805] [2020-08-22 17:56:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:56:07,584 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:56:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,856 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:56:07,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:56:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:56:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:56:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:56:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:56:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:56:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:56:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:56:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:56:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 17:56:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 17:56:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:08,051 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 17:56:08,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569663805] [2020-08-22 17:56:08,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:56:08,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 17:56:08,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070054852] [2020-08-22 17:56:08,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 17:56:08,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:56:08,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 17:56:08,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:56:08,054 INFO L87 Difference]: Start difference. First operand 1263 states and 1457 transitions. Second operand 7 states. [2020-08-22 17:56:08,543 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:56:09,066 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:56:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:56:12,386 INFO L93 Difference]: Finished difference Result 4116 states and 5135 transitions. [2020-08-22 17:56:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:56:12,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-08-22 17:56:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:56:12,403 INFO L225 Difference]: With dead ends: 4116 [2020-08-22 17:56:12,403 INFO L226 Difference]: Without dead ends: 2963 [2020-08-22 17:56:12,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-08-22 17:56:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-08-22 17:56:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2459. [2020-08-22 17:56:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2020-08-22 17:56:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 2865 transitions. [2020-08-22 17:56:13,453 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 2865 transitions. Word has length 200 [2020-08-22 17:56:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:56:13,454 INFO L479 AbstractCegarLoop]: Abstraction has 2459 states and 2865 transitions. [2020-08-22 17:56:13,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 17:56:13,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 2865 transitions. [2020-08-22 17:56:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-08-22 17:56:13,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:56:13,458 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 17:56:13,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:56:13,459 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:56:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:56:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1591834572, now seen corresponding path program 1 times [2020-08-22 17:56:13,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:56:13,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703088117] [2020-08-22 17:56:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:56:13,462 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:56:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:56:13,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:56:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:56:13,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:56:13,777 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:56:13,777 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:56:13,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:56:13,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:56:13 BoogieIcfgContainer [2020-08-22 17:56:13,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:56:13,821 INFO L168 Benchmark]: Toolchain (without parser) took 44391.50 ms. Allocated memory was 137.4 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 100.4 MB in the beginning and 859.7 MB in the end (delta: -759.3 MB). Peak memory consumption was 278.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:13,824 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 17:56:13,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.34 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 167.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:13,831 INFO L168 Benchmark]: Boogie Preprocessor took 105.79 ms. Allocated memory is still 200.3 MB. Free memory was 167.4 MB in the beginning and 163.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:13,832 INFO L168 Benchmark]: RCFGBuilder took 1312.08 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 163.4 MB in the beginning and 170.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:13,835 INFO L168 Benchmark]: TraceAbstraction took 42265.11 ms. Allocated memory was 230.7 MB in the beginning and 1.2 GB in the end (delta: 944.2 MB). Free memory was 170.2 MB in the beginning and 859.7 MB in the end (delta: -689.5 MB). Peak memory consumption was 254.8 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:13,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.34 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 167.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.79 ms. Allocated memory is still 200.3 MB. Free memory was 167.4 MB in the beginning and 163.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1312.08 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 163.4 MB in the beginning and 170.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42265.11 ms. Allocated memory was 230.7 MB in the beginning and 1.2 GB in the end (delta: 944.2 MB). Free memory was 170.2 MB in the beginning and 859.7 MB in the end (delta: -689.5 MB). Peak memory consumption was 254.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L159] int pumpRunning = 0; [L160] int systemActive = 1; [L399] int waterLevel = 1; [L400] int methaneLevelCritical = 0; [L511] int cleanupTimeShifts = 4; [L802] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L584] int retValue_acc ; [L585] int tmp ; [L589] FCALL select_helpers() [L590] FCALL select_features() [L591] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L591] RET, EXPR valid_product() [L591] tmp = valid_product() [L593] COND TRUE \read(tmp) [L595] FCALL setup() [L596] CALL runTest() [L578] CALL test() [L84] int splverifierCounter ; [L85] int tmp ; [L86] int tmp___0 ; [L87] int tmp___1 ; [L88] int tmp___2 ; [L91] splverifierCounter = 0 [L93] COND TRUE 1 [L95] COND TRUE splverifierCounter < 4 [L101] tmp = __VERIFIER_nondet_int() [L103] COND TRUE \read(tmp) [L105] CALL waterRise() [L417] COND TRUE waterLevel < 2 [L418] waterLevel = waterLevel + 1 [L105] RET waterRise() [L111] tmp___0 = __VERIFIER_nondet_int() [L113] COND TRUE \read(tmp___0) [L115] CALL changeMethaneLevel() [L429] COND FALSE !(\read(methaneLevelCritical)) [L432] methaneLevelCritical = 1 [L115] RET changeMethaneLevel() [L121] tmp___2 = __VERIFIER_nondet_int() [L123] COND TRUE \read(tmp___2) [L138] CALL timeShift() [L167] COND FALSE !(\read(pumpRunning)) [L174] COND TRUE \read(systemActive) [L176] CALL processEnvironment() [L248] int tmp ; [L251] COND FALSE !(\read(pumpRunning)) [L266] CALL processEnvironment__wrappee__lowWaterSensor() [L222] int tmp ; [L225] COND FALSE !(\read(pumpRunning)) [L240] CALL processEnvironment__wrappee__highWaterSensor() [L196] int tmp ; [L199] COND TRUE ! pumpRunning [L201] CALL, EXPR isHighWaterLevel() [L345] int retValue_acc ; [L346] int tmp ; [L347] int tmp___0 ; [L351] CALL, EXPR isHighWaterSensorDry() [L479] int retValue_acc ; [L482] COND FALSE !(waterLevel < 2) [L486] retValue_acc = 0 [L487] return (retValue_acc); [L351] RET, EXPR isHighWaterSensorDry() [L351] tmp = isHighWaterSensorDry() [L353] COND FALSE !(\read(tmp)) [L356] tmp___0 = 1 [L358] retValue_acc = tmp___0 [L359] return (retValue_acc); [L201] RET, EXPR isHighWaterLevel() [L201] tmp = isHighWaterLevel() [L203] COND TRUE \read(tmp) [L205] CALL activatePump() [L276] pumpRunning = 1 [L205] RET activatePump() [L240] RET processEnvironment__wrappee__highWaterSensor() [L266] RET processEnvironment__wrappee__lowWaterSensor() [L176] RET processEnvironment() [L182] CALL __utac_acc__Specification1_spec__1() [L608] int tmp ; [L609] int tmp___0 ; [L613] CALL, EXPR isMethaneLevelCritical() [L438] int retValue_acc ; [L441] retValue_acc = methaneLevelCritical [L442] return (retValue_acc); [L613] RET, EXPR isMethaneLevelCritical() [L613] tmp = isMethaneLevelCritical() [L615] COND TRUE \read(tmp) [L617] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L617] RET, EXPR isPumpRunning() [L617] tmp___0 = isPumpRunning() [L619] COND TRUE \read(tmp___0) [L621] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 655 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 34.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2186 SDtfs, 4078 SDslu, 3924 SDs, 0 SdLazy, 9152 SolverSat, 1331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2459occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1834 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...