/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_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:00:45,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:00:45,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:00:45,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:00:45,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:00:45,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:00:45,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:00:45,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:00:45,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:00:45,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:00:45,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:00:45,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:00:45,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:00:45,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:00:45,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:00:45,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:00:45,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:00:45,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:00:45,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:00:45,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:00:45,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:00:45,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:00:45,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:00:45,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:00:45,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:00:45,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:00:45,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:00:45,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:00:45,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:00:45,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:00:45,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:00:45,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:00:45,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:00:45,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:00:45,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:00:45,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:00:45,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:00:45,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:00:45,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:00:45,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:00:45,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:00:45,344 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 22:00:45,377 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:00:45,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:00:45,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:00:45,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:00:45,381 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:00:45,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:00:45,381 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:00:45,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:00:45,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:00:45,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:00:45,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:00:45,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:00:45,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:00:45,382 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:00:45,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:00:45,385 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:00:45,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:00:45,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:00:45,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:00:45,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:00:45,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:00:45,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:45,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:00:45,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:00:45,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:00:45,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:00:45,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:00:45,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:00:45,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:00:45,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:00:45,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:00:45,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:00:45,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:00:45,681 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:00:45,685 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2019-11-06 22:00:45,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76a3376c8/56d25191a17049e1ac86a71937ef9691/FLAGaf226bcb5 [2019-11-06 22:00:46,270 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:00:46,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2019-11-06 22:00:46,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76a3376c8/56d25191a17049e1ac86a71937ef9691/FLAGaf226bcb5 [2019-11-06 22:00:46,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76a3376c8/56d25191a17049e1ac86a71937ef9691 [2019-11-06 22:00:46,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:00:46,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:00:46,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:46,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:00:46,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:00:46,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:46" (1/1) ... [2019-11-06 22:00:46,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e5aa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46, skipping insertion in model container [2019-11-06 22:00:46,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:46" (1/1) ... [2019-11-06 22:00:46,597 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:00:46,645 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:00:47,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:47,080 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:00:47,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:47,208 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:00:47,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47 WrapperNode [2019-11-06 22:00:47,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:47,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:00:47,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:00:47,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:00:47,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (1/1) ... [2019-11-06 22:00:47,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (1/1) ... [2019-11-06 22:00:47,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (1/1) ... [2019-11-06 22:00:47,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (1/1) ... [2019-11-06 22:00:47,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (1/1) ... [2019-11-06 22:00:47,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (1/1) ... [2019-11-06 22:00:47,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (1/1) ... [2019-11-06 22:00:47,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:00:47,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:00:47,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:00:47,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:00:47,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (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 22:00:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:00:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:00:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:00:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:00:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:00:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:00:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:00:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:00:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:00:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:00:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:00:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:00:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:00:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:00:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:00:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:00:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:00:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:00:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:00:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:00:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:00:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:00:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:00:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:00:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:00:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:00:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:00:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:00:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 22:00:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:00:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:00:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:00:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:00:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:00:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:00:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:00:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:00:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:00:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:00:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:00:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:00:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:00:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:00:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:00:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:00:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:00:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:00:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:00:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:00:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:00:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:00:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:00:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:00:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:00:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:00:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:00:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:00:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:00:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 22:00:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:00:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:00:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:00:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:00:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:00:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:00:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-06 22:00:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:00:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:00:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:00:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:00:48,529 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:00:48,530 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:00:48,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:48 BoogieIcfgContainer [2019-11-06 22:00:48,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:00:48,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:00:48,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:00:48,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:00:48,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:46" (1/3) ... [2019-11-06 22:00:48,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37237d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:48, skipping insertion in model container [2019-11-06 22:00:48,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:47" (2/3) ... [2019-11-06 22:00:48,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37237d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:48, skipping insertion in model container [2019-11-06 22:00:48,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:48" (3/3) ... [2019-11-06 22:00:48,540 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2019-11-06 22:00:48,549 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:00:48,558 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:00:48,570 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:00:48,599 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:00:48,599 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:00:48,599 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:00:48,599 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:00:48,599 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:00:48,599 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:00:48,600 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:00:48,600 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:00:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-11-06 22:00:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:00:48,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:48,637 INFO L410 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] [2019-11-06 22:00:48,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:48,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:48,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2019-11-06 22:00:48,653 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:48,653 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701234496] [2019-11-06 22:00:48,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,363 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:49,442 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701234496] [2019-11-06 22:00:49,448 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:49,449 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:00:49,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182013977] [2019-11-06 22:00:49,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:00:49,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:49,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:00:49,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:49,475 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2019-11-06 22:00:50,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:50,785 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2019-11-06 22:00:50,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:00:50,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:00:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:50,824 INFO L225 Difference]: With dead ends: 350 [2019-11-06 22:00:50,824 INFO L226 Difference]: Without dead ends: 188 [2019-11-06 22:00:50,833 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-11-06 22:00:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2019-11-06 22:00:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-06 22:00:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2019-11-06 22:00:51,030 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2019-11-06 22:00:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:51,032 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2019-11-06 22:00:51,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:00:51,032 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2019-11-06 22:00:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:00:51,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:51,044 INFO L410 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] [2019-11-06 22:00:51,045 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:51,045 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2019-11-06 22:00:51,045 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:51,046 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368491179] [2019-11-06 22:00:51,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,453 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:51,508 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368491179] [2019-11-06 22:00:51,509 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:51,509 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:00:51,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438266366] [2019-11-06 22:00:51,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:00:51,511 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:51,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:00:51,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:00:51,512 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2019-11-06 22:00:52,088 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:53,150 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2019-11-06 22:00:53,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:00:53,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-06 22:00:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:53,153 INFO L225 Difference]: With dead ends: 279 [2019-11-06 22:00:53,153 INFO L226 Difference]: Without dead ends: 172 [2019-11-06 22:00:53,155 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:00:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-06 22:00:53,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2019-11-06 22:00:53,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-06 22:00:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2019-11-06 22:00:53,198 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2019-11-06 22:00:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:53,199 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2019-11-06 22:00:53,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:00:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2019-11-06 22:00:53,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-06 22:00:53,201 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:53,201 INFO L410 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] [2019-11-06 22:00:53,201 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:53,202 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2019-11-06 22:00:53,202 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:53,202 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927637573] [2019-11-06 22:00:53,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,563 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:53,669 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927637573] [2019-11-06 22:00:53,669 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:53,669 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:53,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453390814] [2019-11-06 22:00:53,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:53,670 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:53,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:53,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:53,671 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2019-11-06 22:00:54,142 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:54,489 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:54,763 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:55,043 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:56,590 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2019-11-06 22:00:56,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:00:56,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-11-06 22:00:56,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:56,595 INFO L225 Difference]: With dead ends: 292 [2019-11-06 22:00:56,595 INFO L226 Difference]: Without dead ends: 172 [2019-11-06 22:00:56,596 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-06 22:00:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2019-11-06 22:00:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-06 22:00:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2019-11-06 22:00:56,632 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2019-11-06 22:00:56,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:56,633 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2019-11-06 22:00:56,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2019-11-06 22:00:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-06 22:00:56,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:56,635 INFO L410 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] [2019-11-06 22:00:56,635 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:56,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2019-11-06 22:00:56,636 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:56,636 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180720400] [2019-11-06 22:00:56,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,926 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:57,021 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180720400] [2019-11-06 22:00:57,021 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:57,021 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:00:57,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625532303] [2019-11-06 22:00:57,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:00:57,022 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:57,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:00:57,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:00:57,023 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2019-11-06 22:00:57,407 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:58,724 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:59,586 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2019-11-06 22:00:59,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:00:59,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2019-11-06 22:00:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:59,590 INFO L225 Difference]: With dead ends: 407 [2019-11-06 22:00:59,590 INFO L226 Difference]: Without dead ends: 287 [2019-11-06 22:00:59,591 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:00:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2019-11-06 22:00:59,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2019-11-06 22:00:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2019-11-06 22:00:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2019-11-06 22:00:59,644 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2019-11-06 22:00:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:59,645 INFO L462 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2019-11-06 22:00:59,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:00:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2019-11-06 22:00:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-06 22:00:59,646 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:59,647 INFO L410 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] [2019-11-06 22:00:59,647 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2019-11-06 22:00:59,647 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:59,648 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709777666] [2019-11-06 22:00:59,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,962 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:00,109 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709777666] [2019-11-06 22:01:00,110 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:00,110 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:01:00,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834336259] [2019-11-06 22:01:00,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:00,112 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:00,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:00,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:01:00,113 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2019-11-06 22:01:00,548 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:02,129 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:02,460 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:02,745 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:03,008 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:03,991 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2019-11-06 22:01:03,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:01:03,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2019-11-06 22:01:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:03,994 INFO L225 Difference]: With dead ends: 641 [2019-11-06 22:01:03,994 INFO L226 Difference]: Without dead ends: 421 [2019-11-06 22:01:03,996 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:01:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2019-11-06 22:01:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2019-11-06 22:01:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2019-11-06 22:01:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2019-11-06 22:01:04,062 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2019-11-06 22:01:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:04,062 INFO L462 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2019-11-06 22:01:04,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2019-11-06 22:01:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-06 22:01:04,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:04,064 INFO L410 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] [2019-11-06 22:01:04,065 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2019-11-06 22:01:04,065 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:04,066 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483760314] [2019-11-06 22:01:04,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,362 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:04,512 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483760314] [2019-11-06 22:01:04,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:04,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:01:04,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623996865] [2019-11-06 22:01:04,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:01:04,515 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:04,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:01:04,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:01:04,516 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 10 states. [2019-11-06 22:01:05,119 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:06,707 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:07,028 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:07,315 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:07,555 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:07,936 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:09,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:09,546 INFO L93 Difference]: Finished difference Result 875 states and 1097 transitions. [2019-11-06 22:01:09,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:01:09,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-11-06 22:01:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:09,551 INFO L225 Difference]: With dead ends: 875 [2019-11-06 22:01:09,552 INFO L226 Difference]: Without dead ends: 644 [2019-11-06 22:01:09,553 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:01:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-06 22:01:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 572. [2019-11-06 22:01:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-11-06 22:01:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 671 transitions. [2019-11-06 22:01:09,660 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 671 transitions. Word has length 94 [2019-11-06 22:01:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:09,660 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 671 transitions. [2019-11-06 22:01:09,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:01:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 671 transitions. [2019-11-06 22:01:09,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-06 22:01:09,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:09,663 INFO L410 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] [2019-11-06 22:01:09,663 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:09,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:09,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2019-11-06 22:01:09,664 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:09,664 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167574713] [2019-11-06 22:01:09,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,924 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:10,031 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167574713] [2019-11-06 22:01:10,031 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:10,031 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:01:10,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163834344] [2019-11-06 22:01:10,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:10,032 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:10,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:10,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:01:10,033 INFO L87 Difference]: Start difference. First operand 572 states and 671 transitions. Second operand 8 states. [2019-11-06 22:01:11,053 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:11,296 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:11,570 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:12,858 INFO L93 Difference]: Finished difference Result 1061 states and 1294 transitions. [2019-11-06 22:01:12,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:01:12,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2019-11-06 22:01:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:12,864 INFO L225 Difference]: With dead ends: 1061 [2019-11-06 22:01:12,864 INFO L226 Difference]: Without dead ends: 632 [2019-11-06 22:01:12,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:01:12,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-11-06 22:01:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 572. [2019-11-06 22:01:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-11-06 22:01:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 670 transitions. [2019-11-06 22:01:12,998 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 670 transitions. Word has length 94 [2019-11-06 22:01:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:12,999 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 670 transitions. [2019-11-06 22:01:12,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:12,999 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 670 transitions. [2019-11-06 22:01:13,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-06 22:01:13,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:13,003 INFO L410 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] [2019-11-06 22:01:13,004 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:13,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2019-11-06 22:01:13,004 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:13,004 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304842418] [2019-11-06 22:01:13,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,284 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:13,433 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304842418] [2019-11-06 22:01:13,433 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:13,434 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:01:13,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566913580] [2019-11-06 22:01:13,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:01:13,439 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:13,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:01:13,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:01:13,442 INFO L87 Difference]: Start difference. First operand 572 states and 670 transitions. Second operand 12 states. [2019-11-06 22:01:14,153 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:14,438 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:14,728 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:15,567 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:15,829 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:01:16,109 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:16,365 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:17,888 INFO L93 Difference]: Finished difference Result 1167 states and 1426 transitions. [2019-11-06 22:01:17,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:01:17,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2019-11-06 22:01:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:17,898 INFO L225 Difference]: With dead ends: 1167 [2019-11-06 22:01:17,898 INFO L226 Difference]: Without dead ends: 619 [2019-11-06 22:01:17,902 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:01:17,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-11-06 22:01:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 570. [2019-11-06 22:01:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2019-11-06 22:01:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 666 transitions. [2019-11-06 22:01:18,045 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 666 transitions. Word has length 94 [2019-11-06 22:01:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:18,045 INFO L462 AbstractCegarLoop]: Abstraction has 570 states and 666 transitions. [2019-11-06 22:01:18,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:01:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 666 transitions. [2019-11-06 22:01:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-06 22:01:18,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:18,051 INFO L410 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] [2019-11-06 22:01:18,051 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2019-11-06 22:01:18,052 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:18,052 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667527371] [2019-11-06 22:01:18,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,478 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:18,603 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667527371] [2019-11-06 22:01:18,604 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:18,604 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 22:01:18,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034461458] [2019-11-06 22:01:18,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 22:01:18,605 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:18,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 22:01:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:01:18,605 INFO L87 Difference]: Start difference. First operand 570 states and 666 transitions. Second operand 13 states. [2019-11-06 22:01:19,460 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:19,744 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:20,004 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:21,228 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:22,011 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:22,373 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:22,681 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:23,641 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:23,998 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:24,455 INFO L93 Difference]: Finished difference Result 1158 states and 1378 transitions. [2019-11-06 22:01:24,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 22:01:24,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2019-11-06 22:01:24,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:24,464 INFO L225 Difference]: With dead ends: 1158 [2019-11-06 22:01:24,464 INFO L226 Difference]: Without dead ends: 612 [2019-11-06 22:01:24,466 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-11-06 22:01:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-11-06 22:01:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 570. [2019-11-06 22:01:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2019-11-06 22:01:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 654 transitions. [2019-11-06 22:01:24,553 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 654 transitions. Word has length 95 [2019-11-06 22:01:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:24,554 INFO L462 AbstractCegarLoop]: Abstraction has 570 states and 654 transitions. [2019-11-06 22:01:24,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 22:01:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 654 transitions. [2019-11-06 22:01:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-06 22:01:24,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:24,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:24,557 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:24,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:24,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2019-11-06 22:01:24,558 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:24,558 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448244254] [2019-11-06 22:01:24,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,878 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 22:01:25,054 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448244254] [2019-11-06 22:01:25,055 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463205073] [2019-11-06 22:01:25,055 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 22:01:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:25,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-06 22:01:25,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:01:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 22:01:25,545 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:01:25,545 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-11-06 22:01:25,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248933822] [2019-11-06 22:01:25,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-06 22:01:25,547 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:25,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-06 22:01:25,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:01:25,547 INFO L87 Difference]: Start difference. First operand 570 states and 654 transitions. Second operand 19 states.