/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_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:09:22,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:09:22,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:09:22,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:09:22,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:09:22,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:09:22,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:09:22,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:09:22,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:09:22,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:09:22,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:09:22,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:09:22,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:09:22,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:09:22,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:09:22,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:09:22,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:09:22,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:09:22,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:09:22,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:09:22,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:09:22,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:09:22,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:09:22,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:09:22,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:09:22,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:09:22,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:09:22,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:09:22,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:09:22,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:09:22,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:09:22,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:09:22,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:09:22,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:09:22,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:09:22,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:09:22,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:09:22,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:09:22,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:09:22,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:09:22,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:09:22,186 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 18:09:22,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:09:22,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:09:22,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:09:22,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:09:22,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:09:22,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:09:22,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:09:22,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:09:22,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:09:22,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:09:22,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:09:22,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:09:22,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:09:22,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:09:22,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:09:22,206 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:09:22,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:09:22,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:09:22,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:09:22,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:09:22,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:09:22,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:09:22,207 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:09:22,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:09:22,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:09:22,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:09:22,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:09:22,519 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:09:22,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-08-22 18:09:22,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677189b89/5f76f0121b2f49b7b03d23c1643a991f/FLAGd9e097cbf [2020-08-22 18:09:23,116 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:09:23,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-08-22 18:09:23,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677189b89/5f76f0121b2f49b7b03d23c1643a991f/FLAGd9e097cbf [2020-08-22 18:09:23,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677189b89/5f76f0121b2f49b7b03d23c1643a991f [2020-08-22 18:09:23,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:09:23,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:09:23,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:09:23,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:09:23,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:09:23,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:23" (1/1) ... [2020-08-22 18:09:23,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304cdd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:23, skipping insertion in model container [2020-08-22 18:09:23,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:23" (1/1) ... [2020-08-22 18:09:23,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:09:23,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:09:23,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:09:23,813 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:09:24,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:09:24,057 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:09:24,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24 WrapperNode [2020-08-22 18:09:24,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:09:24,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:09:24,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:09:24,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:09:24,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (1/1) ... [2020-08-22 18:09:24,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (1/1) ... [2020-08-22 18:09:24,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (1/1) ... [2020-08-22 18:09:24,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (1/1) ... [2020-08-22 18:09:24,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (1/1) ... [2020-08-22 18:09:24,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (1/1) ... [2020-08-22 18:09:24,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (1/1) ... [2020-08-22 18:09:24,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:09:24,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:09:24,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:09:24,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:09:24,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (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 18:09:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:09:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:09:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:09:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:09:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:09:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:09:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:09:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:09:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:09:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:09:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:09:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:09:24,209 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:09:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:09:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:09:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:09:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:09:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:09:24,211 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:09:24,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:09:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:09:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:09:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 18:09:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 18:09:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:09:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:09:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:09:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:09:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:09:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:09:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 18:09:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:09:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:09:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:09:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:09:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:09:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:09:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:09:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:09:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:09:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:09:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:09:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:09:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:09:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:09:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:09:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:09:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:09:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:09:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:09:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:09:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:09:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:09:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:09:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:09:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:09:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:09:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:09:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:09:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:09:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:09:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:09:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:09:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:09:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:09:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:09:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:09:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:09:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:09:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:09:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:09:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:09:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:09:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:09:25,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:09:25,279 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:09:25,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:25 BoogieIcfgContainer [2020-08-22 18:09:25,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:09:25,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:09:25,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:09:25,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:09:25,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:09:23" (1/3) ... [2020-08-22 18:09:25,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364090fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:25, skipping insertion in model container [2020-08-22 18:09:25,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:24" (2/3) ... [2020-08-22 18:09:25,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364090fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:25, skipping insertion in model container [2020-08-22 18:09:25,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:25" (3/3) ... [2020-08-22 18:09:25,294 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2020-08-22 18:09:25,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:09:25,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:09:25,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:09:25,348 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:09:25,348 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:09:25,348 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:09:25,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:09:25,349 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:09:25,349 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:09:25,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:09:25,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:09:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-08-22 18:09:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 18:09:25,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:25,390 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 18:09:25,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:25,396 INFO L82 PathProgramCache]: Analyzing trace with hash -769806534, now seen corresponding path program 1 times [2020-08-22 18:09:25,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:25,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915512583] [2020-08-22 18:09:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:25,465 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:26,109 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:26,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:26,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 18:09:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:09:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:26,361 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 18:09:26,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915512583] [2020-08-22 18:09:26,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:26,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:09:26,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534939738] [2020-08-22 18:09:26,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:09:26,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:26,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:09:26,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:09:26,405 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 3 states. [2020-08-22 18:09:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:27,610 INFO L93 Difference]: Finished difference Result 428 states and 511 transitions. [2020-08-22 18:09:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:09:27,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 18:09:27,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:27,631 INFO L225 Difference]: With dead ends: 428 [2020-08-22 18:09:27,632 INFO L226 Difference]: Without dead ends: 271 [2020-08-22 18:09:27,637 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 18:09:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-22 18:09:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 231. [2020-08-22 18:09:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-22 18:09:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 249 transitions. [2020-08-22 18:09:27,759 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 249 transitions. Word has length 142 [2020-08-22 18:09:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:27,760 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 249 transitions. [2020-08-22 18:09:27,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:09:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 249 transitions. [2020-08-22 18:09:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 18:09:27,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:27,765 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 18:09:27,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:09:27,766 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:27,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1944569918, now seen corresponding path program 1 times [2020-08-22 18:09:27,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:27,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132445364] [2020-08-22 18:09:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:27,770 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:28,063 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:28,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:09:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:28,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:09:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:28,158 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 18:09:28,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132445364] [2020-08-22 18:09:28,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:28,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:09:28,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713656469] [2020-08-22 18:09:28,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:09:28,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:09:28,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:09:28,162 INFO L87 Difference]: Start difference. First operand 231 states and 249 transitions. Second operand 4 states. [2020-08-22 18:09:28,780 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:29,518 INFO L93 Difference]: Finished difference Result 341 states and 382 transitions. [2020-08-22 18:09:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:09:29,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 18:09:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:29,525 INFO L225 Difference]: With dead ends: 341 [2020-08-22 18:09:29,525 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 18:09:29,527 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 18:09:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 18:09:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 221. [2020-08-22 18:09:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-08-22 18:09:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 236 transitions. [2020-08-22 18:09:29,598 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 236 transitions. Word has length 143 [2020-08-22 18:09:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:29,599 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 236 transitions. [2020-08-22 18:09:29,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:09:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 236 transitions. [2020-08-22 18:09:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 18:09:29,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:29,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:29,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:09:29,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:29,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2135572125, now seen corresponding path program 1 times [2020-08-22 18:09:29,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:29,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46191766] [2020-08-22 18:09:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:29,607 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,021 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:30,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:09:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:09:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 18:09:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:30,185 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 18:09:30,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46191766] [2020-08-22 18:09:30,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:30,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:09:30,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957854878] [2020-08-22 18:09:30,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:09:30,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:30,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:09:30,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:09:30,190 INFO L87 Difference]: Start difference. First operand 221 states and 236 transitions. Second operand 10 states. [2020-08-22 18:09:30,669 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:30,991 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:31,224 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:09:31,458 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:31,717 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:31,933 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:33,175 INFO L93 Difference]: Finished difference Result 387 states and 444 transitions. [2020-08-22 18:09:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:09:33,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-22 18:09:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:33,185 INFO L225 Difference]: With dead ends: 387 [2020-08-22 18:09:33,185 INFO L226 Difference]: Without dead ends: 276 [2020-08-22 18:09:33,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 18:09:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-08-22 18:09:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 221. [2020-08-22 18:09:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-08-22 18:09:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 235 transitions. [2020-08-22 18:09:33,248 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 235 transitions. Word has length 156 [2020-08-22 18:09:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:33,249 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 235 transitions. [2020-08-22 18:09:33,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:09:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 235 transitions. [2020-08-22 18:09:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-22 18:09:33,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:33,252 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] [2020-08-22 18:09:33,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:09:33,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:33,253 INFO L82 PathProgramCache]: Analyzing trace with hash -653127714, now seen corresponding path program 1 times [2020-08-22 18:09:33,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:33,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432998483] [2020-08-22 18:09:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:33,255 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,540 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:09:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:09:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:09:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-22 18:09:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,677 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 18:09:33,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432998483] [2020-08-22 18:09:33,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:33,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 18:09:33,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593058934] [2020-08-22 18:09:33,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 18:09:33,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:33,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 18:09:33,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:09:33,680 INFO L87 Difference]: Start difference. First operand 221 states and 235 transitions. Second operand 7 states. [2020-08-22 18:09:34,343 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:35,905 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:36,466 INFO L93 Difference]: Finished difference Result 558 states and 661 transitions. [2020-08-22 18:09:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 18:09:36,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-22 18:09:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:36,473 INFO L225 Difference]: With dead ends: 558 [2020-08-22 18:09:36,474 INFO L226 Difference]: Without dead ends: 447 [2020-08-22 18:09:36,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:09:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-08-22 18:09:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 320. [2020-08-22 18:09:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-22 18:09:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 344 transitions. [2020-08-22 18:09:36,617 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 344 transitions. Word has length 164 [2020-08-22 18:09:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:36,618 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 344 transitions. [2020-08-22 18:09:36,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 18:09:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 344 transitions. [2020-08-22 18:09:36,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-22 18:09:36,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:36,621 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] [2020-08-22 18:09:36,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:09:36,621 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:36,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:36,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1981324929, now seen corresponding path program 1 times [2020-08-22 18:09:36,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:36,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010573841] [2020-08-22 18:09:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:36,625 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:36,931 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:36,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:36,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:09:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:09:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 18:09:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-22 18:09:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,214 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 18:09:37,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010573841] [2020-08-22 18:09:37,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:37,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:09:37,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626288887] [2020-08-22 18:09:37,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:09:37,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:37,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:09:37,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:09:37,218 INFO L87 Difference]: Start difference. First operand 320 states and 344 transitions. Second operand 15 states. [2020-08-22 18:09:37,848 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:38,289 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:38,601 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:38,953 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:39,209 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:39,424 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:40,044 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:41,227 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:41,473 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:41,709 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:41,943 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:42,166 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:42,416 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:42,673 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:42,931 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:43,211 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:43,481 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:44,844 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:45,084 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:45,415 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:46,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:46,520 INFO L93 Difference]: Finished difference Result 1150 states and 1457 transitions. [2020-08-22 18:09:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 18:09:46,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 188 [2020-08-22 18:09:46,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:46,528 INFO L225 Difference]: With dead ends: 1150 [2020-08-22 18:09:46,528 INFO L226 Difference]: Without dead ends: 940 [2020-08-22 18:09:46,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 18:09:46,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-08-22 18:09:46,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 641. [2020-08-22 18:09:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-08-22 18:09:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 711 transitions. [2020-08-22 18:09:46,769 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 711 transitions. Word has length 188 [2020-08-22 18:09:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:46,769 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 711 transitions. [2020-08-22 18:09:46,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:09:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 711 transitions. [2020-08-22 18:09:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-08-22 18:09:46,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:46,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:09:46,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:09:46,776 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1409876955, now seen corresponding path program 1 times [2020-08-22 18:09:46,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:46,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692643949] [2020-08-22 18:09:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:46,812 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,090 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:09:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:09:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 18:09:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 18:09:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-08-22 18:09:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 18:09:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 18:09:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 18:09:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 18:09:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 18:09:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:47,455 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 18:09:47,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692643949] [2020-08-22 18:09:47,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:47,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:09:47,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709828175] [2020-08-22 18:09:47,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:09:47,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:47,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:09:47,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:09:47,458 INFO L87 Difference]: Start difference. First operand 641 states and 711 transitions. Second operand 15 states. [2020-08-22 18:09:48,018 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:48,822 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:49,639 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:49,898 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:50,175 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:09:50,493 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:50,753 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:51,020 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:51,259 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:51,537 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:09:51,783 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:52,051 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:52,347 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:52,629 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:54,253 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:54,485 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:54,739 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 18:09:54,999 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:55,234 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:55,462 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:56,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:56,115 INFO L93 Difference]: Finished difference Result 1502 states and 1854 transitions. [2020-08-22 18:09:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 18:09:56,115 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 249 [2020-08-22 18:09:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:56,123 INFO L225 Difference]: With dead ends: 1502 [2020-08-22 18:09:56,123 INFO L226 Difference]: Without dead ends: 971 [2020-08-22 18:09:56,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=497, Invalid=2053, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 18:09:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-08-22 18:09:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 637. [2020-08-22 18:09:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2020-08-22 18:09:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 707 transitions. [2020-08-22 18:09:56,326 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 707 transitions. Word has length 249 [2020-08-22 18:09:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:56,327 INFO L479 AbstractCegarLoop]: Abstraction has 637 states and 707 transitions. [2020-08-22 18:09:56,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:09:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 707 transitions. [2020-08-22 18:09:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-08-22 18:09:56,332 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:56,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:09:56,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:09:56,332 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:56,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:56,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1097275968, now seen corresponding path program 1 times [2020-08-22 18:09:56,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:56,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038359441] [2020-08-22 18:09:56,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:56,350 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,661 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:09:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:09:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 18:09:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 18:09:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-22 18:09:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-08-22 18:09:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-22 18:09:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 18:09:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 18:09:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:56,925 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 18:09:56,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038359441] [2020-08-22 18:09:56,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:56,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:09:56,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145052965] [2020-08-22 18:09:56,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:09:56,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:56,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:09:56,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:09:56,928 INFO L87 Difference]: Start difference. First operand 637 states and 707 transitions. Second operand 14 states. [2020-08-22 18:09:57,382 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:58,082 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:59,250 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:59,468 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:59,723 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:59,964 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:00,198 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:00,440 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:00,673 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:00,921 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:01,198 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:01,445 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:02,557 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:02,780 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:04,789 INFO L93 Difference]: Finished difference Result 1750 states and 2205 transitions. [2020-08-22 18:10:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 18:10:04,790 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 245 [2020-08-22 18:10:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:04,798 INFO L225 Difference]: With dead ends: 1750 [2020-08-22 18:10:04,799 INFO L226 Difference]: Without dead ends: 1375 [2020-08-22 18:10:04,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=574, Invalid=1496, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 18:10:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-08-22 18:10:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 820. [2020-08-22 18:10:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-08-22 18:10:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 919 transitions. [2020-08-22 18:10:05,184 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 919 transitions. Word has length 245 [2020-08-22 18:10:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:05,185 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 919 transitions. [2020-08-22 18:10:05,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:10:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 919 transitions. [2020-08-22 18:10:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-22 18:10:05,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:05,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:05,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:10:05,191 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:05,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:05,192 INFO L82 PathProgramCache]: Analyzing trace with hash 35871520, now seen corresponding path program 1 times [2020-08-22 18:10:05,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:05,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134309847] [2020-08-22 18:10:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:05,210 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,476 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:05,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:10:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:10:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 18:10:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 18:10:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 18:10:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 18:10:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-22 18:10:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 18:10:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:05,749 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 18:10:05,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134309847] [2020-08-22 18:10:05,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:05,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:10:05,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447782280] [2020-08-22 18:10:05,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:10:05,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:05,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:10:05,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:10:05,752 INFO L87 Difference]: Start difference. First operand 820 states and 919 transitions. Second operand 15 states. [2020-08-22 18:10:06,380 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:06,623 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:06,874 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:07,123 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:07,335 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:08,119 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:08,341 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:08,590 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:08,848 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:09,079 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:10,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:10,492 INFO L93 Difference]: Finished difference Result 1609 states and 1922 transitions. [2020-08-22 18:10:10,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 18:10:10,494 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 240 [2020-08-22 18:10:10,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:10,500 INFO L225 Difference]: With dead ends: 1609 [2020-08-22 18:10:10,500 INFO L226 Difference]: Without dead ends: 899 [2020-08-22 18:10:10,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-08-22 18:10:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-08-22 18:10:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 679. [2020-08-22 18:10:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-08-22 18:10:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 759 transitions. [2020-08-22 18:10:10,737 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 759 transitions. Word has length 240 [2020-08-22 18:10:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:10,737 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 759 transitions. [2020-08-22 18:10:10,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:10:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 759 transitions. [2020-08-22 18:10:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-08-22 18:10:10,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:10,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:10,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:10:10,741 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:10,741 INFO L82 PathProgramCache]: Analyzing trace with hash -413355322, now seen corresponding path program 2 times [2020-08-22 18:10:10,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:10,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316186630] [2020-08-22 18:10:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:10,750 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:10:10,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:10:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:10:10,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:10:11,096 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:10:11,097 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:10:11,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:10:11,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:10:11 BoogieIcfgContainer [2020-08-22 18:10:11,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:10:11,131 INFO L168 Benchmark]: Toolchain (without parser) took 47715.52 ms. Allocated memory was 140.0 MB in the beginning and 833.6 MB in the end (delta: 693.6 MB). Free memory was 103.1 MB in the beginning and 646.8 MB in the end (delta: -543.7 MB). Peak memory consumption was 149.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:11,132 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:10:11,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.77 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 174.3 MB in the end (delta: -71.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:11,133 INFO L168 Benchmark]: Boogie Preprocessor took 84.37 ms. Allocated memory is still 203.9 MB. Free memory was 174.3 MB in the beginning and 169.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:11,135 INFO L168 Benchmark]: RCFGBuilder took 1143.30 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 169.8 MB in the beginning and 180.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:11,135 INFO L168 Benchmark]: TraceAbstraction took 45842.22 ms. Allocated memory was 237.0 MB in the beginning and 833.6 MB in the end (delta: 596.6 MB). Free memory was 180.1 MB in the beginning and 646.8 MB in the end (delta: -466.8 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:11,139 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.77 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 174.3 MB in the end (delta: -71.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.37 ms. Allocated memory is still 203.9 MB. Free memory was 174.3 MB in the beginning and 169.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1143.30 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 169.8 MB in the beginning and 180.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45842.22 ms. Allocated memory was 237.0 MB in the beginning and 833.6 MB in the end (delta: 596.6 MB). Free memory was 180.1 MB in the beginning and 646.8 MB in the end (delta: -466.8 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L282] int pumpRunning = 0; [L283] int systemActive = 1; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L199] int retValue_acc ; [L202] retValue_acc = 1 [L203] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L210] int splverifierCounter ; [L211] int tmp ; [L212] int tmp___0 ; [L213] int tmp___1 ; [L214] int tmp___2 ; [L217] splverifierCounter = 0 [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND TRUE \read(tmp) [L231] CALL waterRise() [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 [L231] RET waterRise() [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L251] CALL startSystem() [L437] systemActive = 1 [L251] RET startSystem() [L264] CALL timeShift() [L289] COND FALSE !(\read(pumpRunning)) [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND TRUE ! pumpRunning [L323] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L522] int retValue_acc ; [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L323] RET, EXPR isHighWaterLevel() [L323] tmp = isHighWaterLevel() [L325] COND TRUE \read(tmp) [L327] CALL activatePump() [L346] pumpRunning = 1 [L327] RET activatePump() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L304] RET __utac_acc__Specification4_spec__1() [L264] RET timeShift() [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L251] CALL startSystem() [L437] systemActive = 1 [L251] RET startSystem() [L264] CALL timeShift() [L289] COND TRUE \read(pumpRunning) [L291] CALL lowerWaterLevel() [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 [L291] RET lowerWaterLevel() [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(! pumpRunning) [L336] FCALL processEnvironment__wrappee__base() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L304] RET __utac_acc__Specification4_spec__1() [L264] RET timeShift() [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L251] CALL startSystem() [L437] systemActive = 1 [L251] RET startSystem() [L264] CALL timeShift() [L289] COND TRUE \read(pumpRunning) [L291] CALL lowerWaterLevel() [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 [L291] RET lowerWaterLevel() [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(! pumpRunning) [L336] FCALL processEnvironment__wrappee__base() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L540] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 610 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.7s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 39.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1843 SDtfs, 5164 SDslu, 5258 SDs, 0 SdLazy, 10481 SolverSat, 1765 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 263 SyntacticMatches, 6 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=820occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 1663 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...