/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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:24:56,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:24:56,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:24:56,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:24:56,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:24:56,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:24:56,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:24:56,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:24:56,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:24:56,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:24:56,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:24:56,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:24:56,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:24:56,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:24:56,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:24:56,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:24:56,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:24:56,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:24:56,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:24:56,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:24:56,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:24:56,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:24:56,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:24:56,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:24:56,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:24:56,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:24:56,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:24:56,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:24:56,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:24:56,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:24:56,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:24:56,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:24:56,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:24:56,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:24:56,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:24:56,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:24:56,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:24:56,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:24:56,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:24:56,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:24:56,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:24:56,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:24:56,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:24:56,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:24:56,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:24:56,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:24:56,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:24:56,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:24:56,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:24:56,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:24:56,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:24:56,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:24:56,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:24:56,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:24:56,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:24:56,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:24:56,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:24:56,177 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:24:56,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:24:56,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:24:56,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:24:56,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:24:56,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:24:56,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:24:56,179 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:24:56,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:24:56,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:24:56,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:24:56,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:24:56,461 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:24:56,461 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-07-07 12:24:56,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a293d79/6669cffe4a3f4fe9857998e4ff50b804/FLAG0607078c1 [2020-07-07 12:24:57,066 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:24:57,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-07-07 12:24:57,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a293d79/6669cffe4a3f4fe9857998e4ff50b804/FLAG0607078c1 [2020-07-07 12:24:57,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a293d79/6669cffe4a3f4fe9857998e4ff50b804 [2020-07-07 12:24:57,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:24:57,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:24:57,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:24:57,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:24:57,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:24:57,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:24:57" (1/1) ... [2020-07-07 12:24:57,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b4a5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:57, skipping insertion in model container [2020-07-07 12:24:57,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:24:57" (1/1) ... [2020-07-07 12:24:57,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:24:57,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:24:57,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:24:57,863 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:24:58,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:24:58,058 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:24:58,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58 WrapperNode [2020-07-07 12:24:58,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:24:58,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:24:58,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:24:58,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:24:58,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (1/1) ... [2020-07-07 12:24:58,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (1/1) ... [2020-07-07 12:24:58,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (1/1) ... [2020-07-07 12:24:58,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (1/1) ... [2020-07-07 12:24:58,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (1/1) ... [2020-07-07 12:24:58,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (1/1) ... [2020-07-07 12:24:58,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (1/1) ... [2020-07-07 12:24:58,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:24:58,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:24:58,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:24:58,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:24:58,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:24:58,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:24:58,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:24:58,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:24:58,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:24:58,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:24:58,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:24:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:24:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:24:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:24:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:24:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:24:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:24:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:24:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:24:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:24:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:24:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:24:58,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:24:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:24:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:24:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:24:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:24:58,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:24:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:24:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:24:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:24:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:24:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:24:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:24:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:24:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:24:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:24:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:24:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:24:58,223 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:24:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:24:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:24:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:24:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:24:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:24:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:24:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:24:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:24:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:24:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:24:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:24:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:24:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:24:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:24:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:24:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:24:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:24:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:24:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:24:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:24:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:24:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:24:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:24:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:24:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:24:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:24:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:24:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:24:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:24:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:24:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:24:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:24:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:24:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:24:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:24:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:24:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:24:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:24:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:24:58,231 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:24:58,231 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:24:58,231 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:24:58,231 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:24:58,232 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:24:58,232 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:24:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:24:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:24:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:24:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:24:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:24:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:24:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:24:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:24:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:24:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:24:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:24:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:24:59,357 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:24:59,357 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:24:59,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:24:59 BoogieIcfgContainer [2020-07-07 12:24:59,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:24:59,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:24:59,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:24:59,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:24:59,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:24:57" (1/3) ... [2020-07-07 12:24:59,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136c5b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:24:59, skipping insertion in model container [2020-07-07 12:24:59,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:24:58" (2/3) ... [2020-07-07 12:24:59,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136c5b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:24:59, skipping insertion in model container [2020-07-07 12:24:59,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:24:59" (3/3) ... [2020-07-07 12:24:59,371 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-07-07 12:24:59,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:24:59,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:24:59,405 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:24:59,425 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:24:59,425 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:24:59,425 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:24:59,425 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:24:59,425 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:24:59,426 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:24:59,426 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:24:59,426 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:24:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states. [2020-07-07 12:24:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:24:59,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:24:59,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:24:59,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:24:59,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:24:59,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1299916906, now seen corresponding path program 1 times [2020-07-07 12:24:59,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:24:59,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168324912] [2020-07-07 12:24:59,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:24:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,225 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:00,401 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:00,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168324912] [2020-07-07 12:25:00,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:00,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:25:00,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620390955] [2020-07-07 12:25:00,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:25:00,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:00,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:25:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:00,435 INFO L87 Difference]: Start difference. First operand 307 states. Second operand 3 states. [2020-07-07 12:25:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:01,843 INFO L93 Difference]: Finished difference Result 481 states and 577 transitions. [2020-07-07 12:25:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:25:01,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:25:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:01,865 INFO L225 Difference]: With dead ends: 481 [2020-07-07 12:25:01,865 INFO L226 Difference]: Without dead ends: 299 [2020-07-07 12:25:01,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-07-07 12:25:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 256. [2020-07-07 12:25:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-07 12:25:02,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 280 transitions. [2020-07-07 12:25:02,016 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 280 transitions. Word has length 142 [2020-07-07 12:25:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:02,017 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 280 transitions. [2020-07-07 12:25:02,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:25:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 280 transitions. [2020-07-07 12:25:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:25:02,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:02,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:02,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:25:02,023 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:02,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1066330747, now seen corresponding path program 1 times [2020-07-07 12:25:02,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:02,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630775597] [2020-07-07 12:25:02,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:02,439 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:02,538 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:02,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630775597] [2020-07-07 12:25:02,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:02,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:25:02,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110174589] [2020-07-07 12:25:02,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:25:02,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:02,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:25:02,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:25:02,544 INFO L87 Difference]: Start difference. First operand 256 states and 280 transitions. Second operand 4 states. [2020-07-07 12:25:03,181 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:04,177 INFO L93 Difference]: Finished difference Result 392 states and 444 transitions. [2020-07-07 12:25:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:25:04,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:25:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:04,183 INFO L225 Difference]: With dead ends: 392 [2020-07-07 12:25:04,183 INFO L226 Difference]: Without dead ends: 282 [2020-07-07 12:25:04,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:25:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-07 12:25:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 246. [2020-07-07 12:25:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-07-07 12:25:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 267 transitions. [2020-07-07 12:25:04,272 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 267 transitions. Word has length 143 [2020-07-07 12:25:04,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:04,272 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 267 transitions. [2020-07-07 12:25:04,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:25:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 267 transitions. [2020-07-07 12:25:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-07 12:25:04,275 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:04,275 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] [2020-07-07 12:25:04,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:25:04,276 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:04,276 INFO L82 PathProgramCache]: Analyzing trace with hash 449926668, now seen corresponding path program 1 times [2020-07-07 12:25:04,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:04,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29328987] [2020-07-07 12:25:04,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:04,605 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:04,823 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:04,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29328987] [2020-07-07 12:25:04,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:04,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:04,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970616862] [2020-07-07 12:25:04,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:04,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:04,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:04,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:04,828 INFO L87 Difference]: Start difference. First operand 246 states and 267 transitions. Second operand 9 states. [2020-07-07 12:25:05,497 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:05,813 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:06,053 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:25:06,357 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:06,655 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:06,895 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:07,805 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:09,826 INFO L93 Difference]: Finished difference Result 649 states and 752 transitions. [2020-07-07 12:25:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:25:09,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-07-07 12:25:09,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:09,833 INFO L225 Difference]: With dead ends: 649 [2020-07-07 12:25:09,833 INFO L226 Difference]: Without dead ends: 513 [2020-07-07 12:25:09,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-07-07 12:25:09,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-07-07 12:25:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 446. [2020-07-07 12:25:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-07-07 12:25:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 502 transitions. [2020-07-07 12:25:09,975 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 502 transitions. Word has length 152 [2020-07-07 12:25:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:09,976 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 502 transitions. [2020-07-07 12:25:09,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:25:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 502 transitions. [2020-07-07 12:25:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:25:09,979 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:09,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:09,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:25:09,980 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1074396656, now seen corresponding path program 1 times [2020-07-07 12:25:09,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:09,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768174395] [2020-07-07 12:25:09,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,308 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:10,497 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:10,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768174395] [2020-07-07 12:25:10,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:10,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:10,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107783091] [2020-07-07 12:25:10,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:10,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:10,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:10,501 INFO L87 Difference]: Start difference. First operand 446 states and 502 transitions. Second operand 9 states. [2020-07-07 12:25:10,932 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:12,011 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:12,304 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:12,673 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:12,946 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:13,377 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:13,656 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:13,907 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:14,338 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:15,315 INFO L93 Difference]: Finished difference Result 1233 states and 1488 transitions. [2020-07-07 12:25:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:15,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-07-07 12:25:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:15,324 INFO L225 Difference]: With dead ends: 1233 [2020-07-07 12:25:15,325 INFO L226 Difference]: Without dead ends: 897 [2020-07-07 12:25:15,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:25:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-07-07 12:25:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 743. [2020-07-07 12:25:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-07-07 12:25:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 850 transitions. [2020-07-07 12:25:15,567 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 850 transitions. Word has length 161 [2020-07-07 12:25:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:15,567 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 850 transitions. [2020-07-07 12:25:15,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:25:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 850 transitions. [2020-07-07 12:25:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 12:25:15,571 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:15,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:15,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:25:15,572 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:15,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:15,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1527739392, now seen corresponding path program 1 times [2020-07-07 12:25:15,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:15,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912384253] [2020-07-07 12:25:15,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,854 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:16,063 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:16,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912384253] [2020-07-07 12:25:16,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:16,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:16,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335579044] [2020-07-07 12:25:16,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:16,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:16,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:16,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:16,065 INFO L87 Difference]: Start difference. First operand 743 states and 850 transitions. Second operand 10 states. [2020-07-07 12:25:16,563 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:17,759 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:18,044 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:18,314 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:18,587 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:18,829 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:19,398 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:19,628 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:20,075 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:21,183 INFO L93 Difference]: Finished difference Result 1940 states and 2409 transitions. [2020-07-07 12:25:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:25:21,184 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-07-07 12:25:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:21,193 INFO L225 Difference]: With dead ends: 1940 [2020-07-07 12:25:21,193 INFO L226 Difference]: Without dead ends: 1307 [2020-07-07 12:25:21,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-07-07 12:25:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2020-07-07 12:25:21,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1045. [2020-07-07 12:25:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-07-07 12:25:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1213 transitions. [2020-07-07 12:25:21,592 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1213 transitions. Word has length 166 [2020-07-07 12:25:21,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:21,593 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1213 transitions. [2020-07-07 12:25:21,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:21,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1213 transitions. [2020-07-07 12:25:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 12:25:21,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:21,597 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] [2020-07-07 12:25:21,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:25:21,597 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:21,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:21,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1570026786, now seen corresponding path program 1 times [2020-07-07 12:25:21,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:21,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696994343] [2020-07-07 12:25:21,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,849 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:22,036 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:22,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696994343] [2020-07-07 12:25:22,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:22,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:22,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437266701] [2020-07-07 12:25:22,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:22,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:22,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:22,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:22,039 INFO L87 Difference]: Start difference. First operand 1045 states and 1213 transitions. Second operand 10 states. [2020-07-07 12:25:23,471 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:23,728 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:25:23,988 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:25:24,254 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:24,526 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:24,775 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:26,131 INFO L93 Difference]: Finished difference Result 2384 states and 2938 transitions. [2020-07-07 12:25:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:25:26,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-07-07 12:25:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:26,147 INFO L225 Difference]: With dead ends: 2384 [2020-07-07 12:25:26,147 INFO L226 Difference]: Without dead ends: 1449 [2020-07-07 12:25:26,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-07-07 12:25:26,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2020-07-07 12:25:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1083. [2020-07-07 12:25:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-07-07 12:25:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1253 transitions. [2020-07-07 12:25:26,525 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1253 transitions. Word has length 195 [2020-07-07 12:25:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:26,526 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1253 transitions. [2020-07-07 12:25:26,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1253 transitions. [2020-07-07 12:25:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 12:25:26,540 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:26,540 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] [2020-07-07 12:25:26,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:25:26,540 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:26,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:26,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1751070334, now seen corresponding path program 1 times [2020-07-07 12:25:26,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:26,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043150213] [2020-07-07 12:25:26,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,812 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:26,985 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:26,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043150213] [2020-07-07 12:25:26,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:26,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 12:25:26,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375016540] [2020-07-07 12:25:26,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 12:25:26,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:26,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 12:25:26,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-07-07 12:25:26,987 INFO L87 Difference]: Start difference. First operand 1083 states and 1253 transitions. Second operand 13 states. [2020-07-07 12:25:27,562 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:27,812 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:25:28,059 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:28,310 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:28,544 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:29,466 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:29,725 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:30,007 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:30,291 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:30,541 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:32,160 INFO L93 Difference]: Finished difference Result 2466 states and 3077 transitions. [2020-07-07 12:25:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:25:32,160 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2020-07-07 12:25:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:32,170 INFO L225 Difference]: With dead ends: 2466 [2020-07-07 12:25:32,171 INFO L226 Difference]: Without dead ends: 1493 [2020-07-07 12:25:32,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-07-07 12:25:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2020-07-07 12:25:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1107. [2020-07-07 12:25:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2020-07-07 12:25:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1277 transitions. [2020-07-07 12:25:32,491 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1277 transitions. Word has length 195 [2020-07-07 12:25:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:32,492 INFO L479 AbstractCegarLoop]: Abstraction has 1107 states and 1277 transitions. [2020-07-07 12:25:32,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 12:25:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1277 transitions. [2020-07-07 12:25:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 12:25:32,495 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:32,496 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] [2020-07-07 12:25:32,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:25:32,496 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:32,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:32,497 INFO L82 PathProgramCache]: Analyzing trace with hash 110776353, now seen corresponding path program 1 times [2020-07-07 12:25:32,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:32,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555692233] [2020-07-07 12:25:32,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,882 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:33,078 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:33,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555692233] [2020-07-07 12:25:33,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:33,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 12:25:33,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906014186] [2020-07-07 12:25:33,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 12:25:33,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:33,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 12:25:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 12:25:33,080 INFO L87 Difference]: Start difference. First operand 1107 states and 1277 transitions. Second operand 7 states. [2020-07-07 12:25:33,519 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:34,040 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:37,019 INFO L93 Difference]: Finished difference Result 3764 states and 4711 transitions. [2020-07-07 12:25:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:37,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-07-07 12:25:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:37,040 INFO L225 Difference]: With dead ends: 3764 [2020-07-07 12:25:37,041 INFO L226 Difference]: Without dead ends: 2767 [2020-07-07 12:25:37,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:25:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2020-07-07 12:25:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2263. [2020-07-07 12:25:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2020-07-07 12:25:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 2633 transitions. [2020-07-07 12:25:38,126 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 2633 transitions. Word has length 195 [2020-07-07 12:25:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:38,127 INFO L479 AbstractCegarLoop]: Abstraction has 2263 states and 2633 transitions. [2020-07-07 12:25:38,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 12:25:38,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 2633 transitions. [2020-07-07 12:25:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 12:25:38,131 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:38,131 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] [2020-07-07 12:25:38,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:25:38,132 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1026625680, now seen corresponding path program 1 times [2020-07-07 12:25:38,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:38,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874365950] [2020-07-07 12:25:38,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:25:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:25:38,631 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:38,631 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:25:38,631 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:25:38,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:25:38,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:25:38 BoogieIcfgContainer [2020-07-07 12:25:38,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:25:38,667 INFO L168 Benchmark]: Toolchain (without parser) took 41332.80 ms. Allocated memory was 145.2 MB in the beginning and 1.0 GB in the end (delta: 864.6 MB). Free memory was 102.1 MB in the beginning and 849.0 MB in the end (delta: -746.9 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:38,668 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 12:25:38,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.50 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.9 MB in the beginning and 171.6 MB in the end (delta: -69.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:38,670 INFO L168 Benchmark]: Boogie Preprocessor took 88.89 ms. Allocated memory is still 203.4 MB. Free memory was 171.6 MB in the beginning and 167.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:38,671 INFO L168 Benchmark]: RCFGBuilder took 1215.10 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.4 MB in the beginning and 176.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:38,671 INFO L168 Benchmark]: TraceAbstraction took 39300.23 ms. Allocated memory was 235.9 MB in the beginning and 1.0 GB in the end (delta: 773.8 MB). Free memory was 176.4 MB in the beginning and 849.0 MB in the end (delta: -672.6 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:38,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.50 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.9 MB in the beginning and 171.6 MB in the end (delta: -69.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.89 ms. Allocated memory is still 203.4 MB. Free memory was 171.6 MB in the beginning and 167.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1215.10 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.4 MB in the beginning and 176.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39300.23 ms. Allocated memory was 235.9 MB in the beginning and 1.0 GB in the end (delta: 773.8 MB). Free memory was 176.4 MB in the beginning and 849.0 MB in the end (delta: -672.6 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 624 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1953 SDtfs, 3515 SDslu, 3706 SDs, 0 SdLazy, 7896 SolverSat, 1127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2263occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 1818 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...