/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:06:30,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:06:30,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:06:30,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:06:30,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:06:30,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:06:30,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:06:30,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:06:30,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:06:30,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:06:30,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:06:30,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:06:30,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:06:30,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:06:30,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:06:30,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:06:30,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:06:30,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:06:30,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:06:30,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:06:30,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:06:30,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:06:30,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:06:30,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:06:30,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:06:30,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:06:30,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:06:30,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:06:30,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:06:30,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:06:30,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:06:30,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:06:30,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:06:30,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:06:30,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:06:30,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:06:30,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:06:30,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:06:30,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:06:30,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:06:30,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:06:30,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:06:30,249 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:06:30,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:06:30,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:06:30,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:06:30,252 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:06:30,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:06:30,252 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:06:30,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:06:30,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:06:30,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:06:30,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:06:30,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:06:30,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:06:30,255 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:06:30,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:06:30,256 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:06:30,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:06:30,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:06:30,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:06:30,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:06:30,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:06:30,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:06:30,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:06:30,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:06:30,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:06:30,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:06:30,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:06:30,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:06:30,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:06:30,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:06:30,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:06:30,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:06:30,558 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:06:30,561 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:06:30,562 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2019-11-06 22:06:30,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c097169/648a9d4f0d23479fb0f7af85e6c90aa6/FLAG00141bc21 [2019-11-06 22:06:31,221 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:06:31,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2019-11-06 22:06:31,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c097169/648a9d4f0d23479fb0f7af85e6c90aa6/FLAG00141bc21 [2019-11-06 22:06:31,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c097169/648a9d4f0d23479fb0f7af85e6c90aa6 [2019-11-06 22:06:31,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:06:31,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:06:31,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:06:31,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:06:31,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:06:31,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:06:31" (1/1) ... [2019-11-06 22:06:31,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16372189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:31, skipping insertion in model container [2019-11-06 22:06:31,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:06:31" (1/1) ... [2019-11-06 22:06:31,565 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:06:31,621 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:06:32,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:06:32,029 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:06:32,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:06:32,164 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:06:32,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32 WrapperNode [2019-11-06 22:06:32,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:06:32,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:06:32,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:06:32,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:06:32,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (1/1) ... [2019-11-06 22:06:32,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (1/1) ... [2019-11-06 22:06:32,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (1/1) ... [2019-11-06 22:06:32,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (1/1) ... [2019-11-06 22:06:32,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (1/1) ... [2019-11-06 22:06:32,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (1/1) ... [2019-11-06 22:06:32,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (1/1) ... [2019-11-06 22:06:32,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:06:32,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:06:32,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:06:32,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:06:32,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (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 [2019-11-06 22:06:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:06:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:06:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:06:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:06:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:06:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:06:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:06:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:06:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:06:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:06:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:06:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:06:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:06:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:06:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:06:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:06:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:06:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:06:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 22:06:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:06:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:06:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:06:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:06:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:06:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:06:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:06:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:06:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:06:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:06:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:06:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:06:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:06:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:06:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:06:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:06:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:06:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:06:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:06:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:06:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:06:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:06:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:06:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:06:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:06:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:06:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:06:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:06:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:06:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:06:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:06:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:06:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:06:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:06:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:06:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:06:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:06:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:06:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:06:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:06:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 22:06:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:06:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:06:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:06:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:06:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:06:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:06:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:06:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:06:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:06:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:06:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:06:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:06:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:06:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:06:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:06:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:06:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:06:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:06:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:06:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:06:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:06:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:06:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:06:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:06:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:06:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:06:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:06:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:06:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:06:32,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:06:32,397 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:06:32,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:06:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:06:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:06:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:06:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:06:33,466 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:06:33,467 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:06:33,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:33 BoogieIcfgContainer [2019-11-06 22:06:33,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:06:33,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:06:33,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:06:33,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:06:33,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:06:31" (1/3) ... [2019-11-06 22:06:33,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddb79c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:06:33, skipping insertion in model container [2019-11-06 22:06:33,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:32" (2/3) ... [2019-11-06 22:06:33,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddb79c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:06:33, skipping insertion in model container [2019-11-06 22:06:33,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:33" (3/3) ... [2019-11-06 22:06:33,478 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2019-11-06 22:06:33,489 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:06:33,499 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:06:33,511 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:06:33,550 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:06:33,550 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:06:33,550 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:06:33,550 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:06:33,551 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:06:33,551 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:06:33,551 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:06:33,551 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:06:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2019-11-06 22:06:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:06:33,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:06:33,598 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:06:33,600 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:06:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:06:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451371, now seen corresponding path program 1 times [2019-11-06 22:06:33,615 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:06:33,615 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988169874] [2019-11-06 22:06:33,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:06:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,360 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:06:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:06:34,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988169874] [2019-11-06 22:06:34,494 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:06:34,495 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:06:34,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995352412] [2019-11-06 22:06:34,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:06:34,504 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:06:34,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:06:34,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:06:34,522 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2019-11-06 22:06:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:06:35,639 INFO L93 Difference]: Finished difference Result 286 states and 369 transitions. [2019-11-06 22:06:35,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:06:35,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-11-06 22:06:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:06:35,656 INFO L225 Difference]: With dead ends: 286 [2019-11-06 22:06:35,656 INFO L226 Difference]: Without dead ends: 159 [2019-11-06 22:06:35,661 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:06:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-06 22:06:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2019-11-06 22:06:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-11-06 22:06:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2019-11-06 22:06:35,780 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 59 [2019-11-06 22:06:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:06:35,781 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2019-11-06 22:06:35,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:06:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2019-11-06 22:06:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:06:35,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:06:35,788 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:06:35,788 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:06:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:06:35,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1343962066, now seen corresponding path program 1 times [2019-11-06 22:06:35,789 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:06:35,789 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035814921] [2019-11-06 22:06:35,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:06:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,191 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:06:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:06:36,244 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035814921] [2019-11-06 22:06:36,244 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:06:36,244 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:06:36,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930916954] [2019-11-06 22:06:36,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:06:36,246 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:06:36,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:06:36,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:06:36,247 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 5 states. [2019-11-06 22:06:36,801 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:06:37,657 INFO L93 Difference]: Finished difference Result 218 states and 267 transitions. [2019-11-06 22:06:37,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:06:37,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-06 22:06:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:06:37,661 INFO L225 Difference]: With dead ends: 218 [2019-11-06 22:06:37,661 INFO L226 Difference]: Without dead ends: 149 [2019-11-06 22:06:37,662 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:06:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-11-06 22:06:37,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2019-11-06 22:06:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-06 22:06:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2019-11-06 22:06:37,697 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 60 [2019-11-06 22:06:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:06:37,698 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2019-11-06 22:06:37,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:06:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2019-11-06 22:06:37,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-06 22:06:37,700 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:06:37,700 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:06:37,700 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:06:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:06:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1988567769, now seen corresponding path program 1 times [2019-11-06 22:06:37,701 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:06:37,701 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347832845] [2019-11-06 22:06:37,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:06:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,058 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:06:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:06:38,176 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347832845] [2019-11-06 22:06:38,177 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:06:38,177 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:06:38,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310063694] [2019-11-06 22:06:38,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:06:38,178 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:06:38,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:06:38,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:06:38,179 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 9 states. [2019-11-06 22:06:38,659 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:06:39,048 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:06:39,343 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:39,627 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:40,619 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:41,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:06:41,847 INFO L93 Difference]: Finished difference Result 402 states and 496 transitions. [2019-11-06 22:06:41,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:06:41,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2019-11-06 22:06:41,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:06:41,852 INFO L225 Difference]: With dead ends: 402 [2019-11-06 22:06:41,853 INFO L226 Difference]: Without dead ends: 311 [2019-11-06 22:06:41,854 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:06:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2019-11-06 22:06:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 242. [2019-11-06 22:06:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-11-06 22:06:41,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2019-11-06 22:06:41,914 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 65 [2019-11-06 22:06:41,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:06:41,915 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2019-11-06 22:06:41,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:06:41,915 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2019-11-06 22:06:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:06:41,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:06:41,918 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:06:41,918 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:06:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:06:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash 827482166, now seen corresponding path program 1 times [2019-11-06 22:06:41,919 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:06:41,919 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828405868] [2019-11-06 22:06:41,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:06:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,239 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:06:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:06:42,311 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828405868] [2019-11-06 22:06:42,312 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:06:42,312 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:06:42,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664939773] [2019-11-06 22:06:42,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:06:42,313 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:06:42,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:06:42,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:06:42,313 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand 9 states. [2019-11-06 22:06:42,896 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:06:43,647 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:44,509 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:06:44,870 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:45,155 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:45,443 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:46,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:06:46,029 INFO L93 Difference]: Finished difference Result 631 states and 816 transitions. [2019-11-06 22:06:46,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:06:46,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-11-06 22:06:46,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:06:46,035 INFO L225 Difference]: With dead ends: 631 [2019-11-06 22:06:46,035 INFO L226 Difference]: Without dead ends: 417 [2019-11-06 22:06:46,038 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:06:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2019-11-06 22:06:46,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 353. [2019-11-06 22:06:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2019-11-06 22:06:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 423 transitions. [2019-11-06 22:06:46,110 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 423 transitions. Word has length 70 [2019-11-06 22:06:46,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:06:46,111 INFO L462 AbstractCegarLoop]: Abstraction has 353 states and 423 transitions. [2019-11-06 22:06:46,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:06:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 423 transitions. [2019-11-06 22:06:46,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:06:46,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:06:46,114 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:06:46,114 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:06:46,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:06:46,115 INFO L82 PathProgramCache]: Analyzing trace with hash 361073596, now seen corresponding path program 1 times [2019-11-06 22:06:46,115 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:06:46,115 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432195841] [2019-11-06 22:06:46,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:06:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,419 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:06:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:06:46,580 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432195841] [2019-11-06 22:06:46,580 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:06:46,580 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:06:46,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681052005] [2019-11-06 22:06:46,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:06:46,582 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:06:46,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:06:46,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:06:46,584 INFO L87 Difference]: Start difference. First operand 353 states and 423 transitions. Second operand 9 states. [2019-11-06 22:06:47,112 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:06:48,180 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:48,470 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:06:48,779 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:49,078 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:06:49,997 INFO L93 Difference]: Finished difference Result 1112 states and 1489 transitions. [2019-11-06 22:06:49,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:06:49,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2019-11-06 22:06:50,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:06:50,008 INFO L225 Difference]: With dead ends: 1112 [2019-11-06 22:06:50,008 INFO L226 Difference]: Without dead ends: 787 [2019-11-06 22:06:50,010 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:06:50,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2019-11-06 22:06:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 665. [2019-11-06 22:06:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-11-06 22:06:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 802 transitions. [2019-11-06 22:06:50,196 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 802 transitions. Word has length 88 [2019-11-06 22:06:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:06:50,197 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 802 transitions. [2019-11-06 22:06:50,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:06:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 802 transitions. [2019-11-06 22:06:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:06:50,200 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:06:50,200 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:06:50,201 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:06:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:06:50,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1750216773, now seen corresponding path program 1 times [2019-11-06 22:06:50,201 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:06:50,202 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765442816] [2019-11-06 22:06:50,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:06:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,467 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:06:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:06:50,576 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765442816] [2019-11-06 22:06:50,576 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:06:50,577 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:06:50,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705731499] [2019-11-06 22:06:50,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:06:50,577 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:06:50,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:06:50,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:06:50,578 INFO L87 Difference]: Start difference. First operand 665 states and 802 transitions. Second operand 9 states. [2019-11-06 22:06:51,753 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:52,051 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:06:52,329 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:52,587 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:53,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:06:53,062 INFO L93 Difference]: Finished difference Result 1429 states and 1823 transitions. [2019-11-06 22:06:53,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:06:53,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2019-11-06 22:06:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:06:53,069 INFO L225 Difference]: With dead ends: 1429 [2019-11-06 22:06:53,069 INFO L226 Difference]: Without dead ends: 792 [2019-11-06 22:06:53,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:06:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-11-06 22:06:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 685. [2019-11-06 22:06:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2019-11-06 22:06:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 822 transitions. [2019-11-06 22:06:53,224 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 822 transitions. Word has length 88 [2019-11-06 22:06:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:06:53,227 INFO L462 AbstractCegarLoop]: Abstraction has 685 states and 822 transitions. [2019-11-06 22:06:53,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:06:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 822 transitions. [2019-11-06 22:06:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:06:53,233 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:06:53,233 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:06:53,233 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:06:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:06:53,234 INFO L82 PathProgramCache]: Analyzing trace with hash -364013379, now seen corresponding path program 1 times [2019-11-06 22:06:53,234 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:06:53,235 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370744925] [2019-11-06 22:06:53,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:06:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,552 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:06:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:06:53,675 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370744925] [2019-11-06 22:06:53,675 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:06:53,675 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:06:53,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370096498] [2019-11-06 22:06:53,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:06:53,677 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:06:53,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:06:53,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:06:53,679 INFO L87 Difference]: Start difference. First operand 685 states and 822 transitions. Second operand 11 states. [2019-11-06 22:06:54,472 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:06:54,745 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:54,998 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:56,012 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:56,368 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:56,634 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:06:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:06:57,442 INFO L93 Difference]: Finished difference Result 1290 states and 1630 transitions. [2019-11-06 22:06:57,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 22:06:57,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2019-11-06 22:06:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:06:57,447 INFO L225 Difference]: With dead ends: 1290 [2019-11-06 22:06:57,447 INFO L226 Difference]: Without dead ends: 633 [2019-11-06 22:06:57,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:06:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-11-06 22:06:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 556. [2019-11-06 22:06:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-11-06 22:06:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 650 transitions. [2019-11-06 22:06:57,539 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 650 transitions. Word has length 88 [2019-11-06 22:06:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:06:57,539 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 650 transitions. [2019-11-06 22:06:57,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:06:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 650 transitions. [2019-11-06 22:06:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 22:06:57,541 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:06:57,542 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:06:57,542 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:06:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:06:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1797836392, now seen corresponding path program 1 times [2019-11-06 22:06:57,542 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:06:57,543 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116217631] [2019-11-06 22:06:57,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:06:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:57,927 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:06:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:06:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:06:58,090 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116217631] [2019-11-06 22:06:58,090 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:06:58,090 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:06:58,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747770349] [2019-11-06 22:06:58,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:06:58,091 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:06:58,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:06:58,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:06:58,092 INFO L87 Difference]: Start difference. First operand 556 states and 650 transitions. Second operand 12 states. [2019-11-06 22:06:58,653 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:06:59,395 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:00,203 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:00,574 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:00,842 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:07:01,154 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:01,453 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:02,936 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:03,233 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:03,790 INFO L93 Difference]: Finished difference Result 1629 states and 2065 transitions. [2019-11-06 22:07:03,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-06 22:07:03,790 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2019-11-06 22:07:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:03,798 INFO L225 Difference]: With dead ends: 1629 [2019-11-06 22:07:03,799 INFO L226 Difference]: Without dead ends: 1277 [2019-11-06 22:07:03,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-11-06 22:07:03,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2019-11-06 22:07:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1157. [2019-11-06 22:07:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2019-11-06 22:07:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1355 transitions. [2019-11-06 22:07:03,985 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1355 transitions. Word has length 92 [2019-11-06 22:07:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:03,989 INFO L462 AbstractCegarLoop]: Abstraction has 1157 states and 1355 transitions. [2019-11-06 22:07:03,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:07:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1355 transitions. [2019-11-06 22:07:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-06 22:07:03,993 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:03,993 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-06 22:07:03,994 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:03,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1966372220, now seen corresponding path program 1 times [2019-11-06 22:07:03,995 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:03,997 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081011089] [2019-11-06 22:07:03,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,355 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-06 22:07:04,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081011089] [2019-11-06 22:07:04,637 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468880224] [2019-11-06 22:07:04,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:07:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:04,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-06 22:07:04,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:07:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:07:05,048 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:07:05,048 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-11-06 22:07:05,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905038633] [2019-11-06 22:07:05,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 22:07:05,050 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:05,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 22:07:05,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:07:05,050 INFO L87 Difference]: Start difference. First operand 1157 states and 1355 transitions. Second operand 20 states. [2019-11-06 22:07:06,165 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:07:06,553 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-11-06 22:07:06,852 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-11-06 22:07:07,140 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-11-06 22:07:07,983 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-11-06 22:07:08,339 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:08,711 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:07:09,133 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 196