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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:34,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:34,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:34,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:34,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:34,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:34,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:34,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:34,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:34,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:34,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:34,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:34,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:34,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:34,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:34,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:34,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:34,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:34,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:34,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:34,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:34,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:34,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:34,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:34,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:34,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:34,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:34,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:34,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:34,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:34,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:34,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:34,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:34,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:34,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:34,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:34,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:34,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:34,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:34,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:34,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:34,399 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 [2019-09-20 13:07:34,414 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:34,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:34,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:34,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:34,416 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:34,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:34,416 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:34,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:34,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:34,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:34,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:34,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:34,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:34,417 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:34,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:34,418 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:34,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:34,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:34,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:34,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:34,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:34,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:34,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:34,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:34,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:34,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:34,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:34,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:34,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:34,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:34,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:34,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:34,489 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:34,490 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:34,490 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-09-20 13:07:34,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27a7c607/185b76171b204771bc891d9b3fd34b6a/FLAG042c25399 [2019-09-20 13:07:35,134 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:35,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-09-20 13:07:35,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27a7c607/185b76171b204771bc891d9b3fd34b6a/FLAG042c25399 [2019-09-20 13:07:35,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27a7c607/185b76171b204771bc891d9b3fd34b6a [2019-09-20 13:07:35,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:35,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:35,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:35,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:35,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:35,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:35" (1/1) ... [2019-09-20 13:07:35,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46270ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:35, skipping insertion in model container [2019-09-20 13:07:35,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:35" (1/1) ... [2019-09-20 13:07:35,409 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:35,477 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:35,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:35,976 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:36,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:36,128 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:36,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36 WrapperNode [2019-09-20 13:07:36,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:36,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:36,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:36,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:36,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (1/1) ... [2019-09-20 13:07:36,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (1/1) ... [2019-09-20 13:07:36,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (1/1) ... [2019-09-20 13:07:36,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (1/1) ... [2019-09-20 13:07:36,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (1/1) ... [2019-09-20 13:07:36,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (1/1) ... [2019-09-20 13:07:36,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (1/1) ... [2019-09-20 13:07:36,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:36,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:36,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:36,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:36,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (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 [2019-09-20 13:07:36,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:36,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:36,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:36,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:36,300 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:36,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:36,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:07:36,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:36,302 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:07:36,302 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:36,302 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:36,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:36,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:36,304 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:36,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:36,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:07:36,307 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:36,308 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:36,308 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:36,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:36,308 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:36,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:36,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:36,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:36,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:36,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:36,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:07:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:07:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:07:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:36,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:36,319 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:36,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:36,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:36,320 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:36,320 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:36,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:36,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:37,554 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:37,555 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:37,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:37 BoogieIcfgContainer [2019-09-20 13:07:37,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:37,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:37,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:37,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:37,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:35" (1/3) ... [2019-09-20 13:07:37,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d28f8c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:37, skipping insertion in model container [2019-09-20 13:07:37,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:36" (2/3) ... [2019-09-20 13:07:37,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d28f8c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:37, skipping insertion in model container [2019-09-20 13:07:37,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:37" (3/3) ... [2019-09-20 13:07:37,567 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2019-09-20 13:07:37,578 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:37,592 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:37,611 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:37,650 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:37,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:37,651 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:37,651 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:37,651 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:37,651 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:37,651 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:37,651 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:37,652 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2019-09-20 13:07:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:37,685 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:37,687 INFO L407 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] [2019-09-20 13:07:37,690 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:37,698 INFO L82 PathProgramCache]: Analyzing trace with hash -981984858, now seen corresponding path program 1 times [2019-09-20 13:07:37,700 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:37,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:37,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:37,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:37,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:38,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:38,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:38,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:38,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:38,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:38,150 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2019-09-20 13:07:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:38,249 INFO L93 Difference]: Finished difference Result 294 states and 365 transitions. [2019-09-20 13:07:38,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:38,256 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:38,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:38,282 INFO L225 Difference]: With dead ends: 294 [2019-09-20 13:07:38,283 INFO L226 Difference]: Without dead ends: 149 [2019-09-20 13:07:38,300 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-20 13:07:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-09-20 13:07:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-09-20 13:07:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2019-09-20 13:07:38,401 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 59 [2019-09-20 13:07:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:38,402 INFO L475 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2019-09-20 13:07:38,403 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:38,403 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2019-09-20 13:07:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:38,416 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:38,416 INFO L407 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] [2019-09-20 13:07:38,416 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash 598368098, now seen corresponding path program 1 times [2019-09-20 13:07:38,417 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:38,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:38,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:38,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:38,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:38,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:38,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:38,602 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:38,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:38,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:38,604 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 3 states. [2019-09-20 13:07:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:38,645 INFO L93 Difference]: Finished difference Result 237 states and 279 transitions. [2019-09-20 13:07:38,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:38,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:38,653 INFO L225 Difference]: With dead ends: 237 [2019-09-20 13:07:38,654 INFO L226 Difference]: Without dead ends: 140 [2019-09-20 13:07:38,656 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-20 13:07:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-20 13:07:38,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-20 13:07:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-09-20 13:07:38,684 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 60 [2019-09-20 13:07:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:38,684 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-09-20 13:07:38,685 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-09-20 13:07:38,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:07:38,687 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:38,687 INFO L407 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] [2019-09-20 13:07:38,687 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:38,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:38,688 INFO L82 PathProgramCache]: Analyzing trace with hash 75711308, now seen corresponding path program 1 times [2019-09-20 13:07:38,688 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:38,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:38,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:38,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:38,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:38,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:38,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:38,938 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:38,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:38,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:38,940 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 7 states. [2019-09-20 13:07:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:39,526 INFO L93 Difference]: Finished difference Result 420 states and 510 transitions. [2019-09-20 13:07:39,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:39,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:07:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:39,537 INFO L225 Difference]: With dead ends: 420 [2019-09-20 13:07:39,537 INFO L226 Difference]: Without dead ends: 308 [2019-09-20 13:07:39,540 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:07:39,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2019-09-20 13:07:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 300. [2019-09-20 13:07:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-09-20 13:07:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 364 transitions. [2019-09-20 13:07:39,612 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 364 transitions. Word has length 64 [2019-09-20 13:07:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:39,615 INFO L475 AbstractCegarLoop]: Abstraction has 300 states and 364 transitions. [2019-09-20 13:07:39,615 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 364 transitions. [2019-09-20 13:07:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:07:39,618 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:39,619 INFO L407 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] [2019-09-20 13:07:39,619 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:39,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1055869647, now seen corresponding path program 1 times [2019-09-20 13:07:39,620 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:39,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:39,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:39,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:39,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:07:39,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:39,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:39,759 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:39,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:39,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:39,760 INFO L87 Difference]: Start difference. First operand 300 states and 364 transitions. Second operand 7 states. [2019-09-20 13:07:40,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:40,489 INFO L93 Difference]: Finished difference Result 771 states and 996 transitions. [2019-09-20 13:07:40,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:40,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:07:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:40,495 INFO L225 Difference]: With dead ends: 771 [2019-09-20 13:07:40,496 INFO L226 Difference]: Without dead ends: 499 [2019-09-20 13:07:40,498 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-09-20 13:07:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 446. [2019-09-20 13:07:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-09-20 13:07:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 533 transitions. [2019-09-20 13:07:40,551 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 533 transitions. Word has length 70 [2019-09-20 13:07:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:40,552 INFO L475 AbstractCegarLoop]: Abstraction has 446 states and 533 transitions. [2019-09-20 13:07:40,552 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 533 transitions. [2019-09-20 13:07:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:07:40,559 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:40,559 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:40,560 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:40,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2082867985, now seen corresponding path program 1 times [2019-09-20 13:07:40,567 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:40,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:40,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:40,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:40,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:40,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:40,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:40,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:40,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:40,740 INFO L87 Difference]: Start difference. First operand 446 states and 533 transitions. Second operand 4 states. [2019-09-20 13:07:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:41,068 INFO L93 Difference]: Finished difference Result 1618 states and 2050 transitions. [2019-09-20 13:07:41,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:41,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-09-20 13:07:41,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:41,077 INFO L225 Difference]: With dead ends: 1618 [2019-09-20 13:07:41,077 INFO L226 Difference]: Without dead ends: 1200 [2019-09-20 13:07:41,079 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2019-09-20 13:07:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1174. [2019-09-20 13:07:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2019-09-20 13:07:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1455 transitions. [2019-09-20 13:07:41,168 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1455 transitions. Word has length 107 [2019-09-20 13:07:41,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:41,169 INFO L475 AbstractCegarLoop]: Abstraction has 1174 states and 1455 transitions. [2019-09-20 13:07:41,169 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1455 transitions. [2019-09-20 13:07:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:07:41,173 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:41,173 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:41,174 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:41,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1842327856, now seen corresponding path program 1 times [2019-09-20 13:07:41,174 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:41,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:41,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:41,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:41,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:41,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:41,270 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:41,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:41,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:41,271 INFO L87 Difference]: Start difference. First operand 1174 states and 1455 transitions. Second operand 6 states. [2019-09-20 13:07:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:41,355 INFO L93 Difference]: Finished difference Result 2362 states and 3044 transitions. [2019-09-20 13:07:41,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:41,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-20 13:07:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:41,365 INFO L225 Difference]: With dead ends: 2362 [2019-09-20 13:07:41,365 INFO L226 Difference]: Without dead ends: 1216 [2019-09-20 13:07:41,370 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2019-09-20 13:07:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1204. [2019-09-20 13:07:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-09-20 13:07:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1487 transitions. [2019-09-20 13:07:41,459 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1487 transitions. Word has length 107 [2019-09-20 13:07:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:41,462 INFO L475 AbstractCegarLoop]: Abstraction has 1204 states and 1487 transitions. [2019-09-20 13:07:41,462 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1487 transitions. [2019-09-20 13:07:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:07:41,466 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:41,466 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:41,466 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:41,467 INFO L82 PathProgramCache]: Analyzing trace with hash 85944846, now seen corresponding path program 1 times [2019-09-20 13:07:41,467 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:41,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:41,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:41,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:41,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:41,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:41,617 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:41,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:41,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:41,618 INFO L87 Difference]: Start difference. First operand 1204 states and 1487 transitions. Second operand 8 states. [2019-09-20 13:07:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:41,713 INFO L93 Difference]: Finished difference Result 2173 states and 2763 transitions. [2019-09-20 13:07:41,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:41,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-09-20 13:07:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:41,723 INFO L225 Difference]: With dead ends: 2173 [2019-09-20 13:07:41,723 INFO L226 Difference]: Without dead ends: 997 [2019-09-20 13:07:41,728 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:41,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2019-09-20 13:07:41,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2019-09-20 13:07:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2019-09-20 13:07:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1218 transitions. [2019-09-20 13:07:41,798 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1218 transitions. Word has length 107 [2019-09-20 13:07:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:41,799 INFO L475 AbstractCegarLoop]: Abstraction has 997 states and 1218 transitions. [2019-09-20 13:07:41,799 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1218 transitions. [2019-09-20 13:07:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-20 13:07:41,804 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:41,804 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:41,804 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:41,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1945052595, now seen corresponding path program 1 times [2019-09-20 13:07:41,805 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:41,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:41,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:41,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:42,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:42,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:42,065 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:42,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:42,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:42,067 INFO L87 Difference]: Start difference. First operand 997 states and 1218 transitions. Second operand 9 states. [2019-09-20 13:07:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:43,426 INFO L93 Difference]: Finished difference Result 2728 states and 3492 transitions. [2019-09-20 13:07:43,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:43,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-20 13:07:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:43,439 INFO L225 Difference]: With dead ends: 2728 [2019-09-20 13:07:43,439 INFO L226 Difference]: Without dead ends: 1941 [2019-09-20 13:07:43,444 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2019-09-20 13:07:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1716. [2019-09-20 13:07:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1716 states. [2019-09-20 13:07:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2065 transitions. [2019-09-20 13:07:43,600 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2065 transitions. Word has length 111 [2019-09-20 13:07:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:43,601 INFO L475 AbstractCegarLoop]: Abstraction has 1716 states and 2065 transitions. [2019-09-20 13:07:43,601 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2065 transitions. [2019-09-20 13:07:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-20 13:07:43,608 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:43,608 INFO L407 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, 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] [2019-09-20 13:07:43,609 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash -451795391, now seen corresponding path program 1 times [2019-09-20 13:07:43,609 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:43,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:43,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:43,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-20 13:07:43,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:43,811 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:43,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:44,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:44,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:07:44,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:44,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:44,381 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:44,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:44,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:44,384 INFO L87 Difference]: Start difference. First operand 1716 states and 2065 transitions. Second operand 16 states. [2019-09-20 13:07:45,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:45,919 INFO L93 Difference]: Finished difference Result 3903 states and 4906 transitions. [2019-09-20 13:07:45,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:45,920 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 170 [2019-09-20 13:07:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:45,943 INFO L225 Difference]: With dead ends: 3903 [2019-09-20 13:07:45,944 INFO L226 Difference]: Without dead ends: 2391 [2019-09-20 13:07:45,954 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:07:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2019-09-20 13:07:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2145. [2019-09-20 13:07:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2019-09-20 13:07:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2555 transitions. [2019-09-20 13:07:46,185 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2555 transitions. Word has length 170 [2019-09-20 13:07:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:46,186 INFO L475 AbstractCegarLoop]: Abstraction has 2145 states and 2555 transitions. [2019-09-20 13:07:46,186 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2555 transitions. [2019-09-20 13:07:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2019-09-20 13:07:46,201 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:46,202 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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] [2019-09-20 13:07:46,202 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:46,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2132265714, now seen corresponding path program 1 times [2019-09-20 13:07:46,203 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:46,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:46,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2019-09-20 13:07:46,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:46,617 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:46,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:46,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 230 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:47,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:47,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:07:47,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:07:47,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:07:47,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:47,187 INFO L87 Difference]: Start difference. First operand 2145 states and 2555 transitions. Second operand 19 states. [2019-09-20 13:07:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:54,341 INFO L93 Difference]: Finished difference Result 8331 states and 11939 transitions. [2019-09-20 13:07:54,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-20 13:07:54,342 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 303 [2019-09-20 13:07:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:54,380 INFO L225 Difference]: With dead ends: 8331 [2019-09-20 13:07:54,380 INFO L226 Difference]: Without dead ends: 6222 [2019-09-20 13:07:54,393 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=679, Invalid=4577, Unknown=0, NotChecked=0, Total=5256 [2019-09-20 13:07:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2019-09-20 13:07:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 4417. [2019-09-20 13:07:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4417 states. [2019-09-20 13:07:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 5075 transitions. [2019-09-20 13:07:54,744 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 5075 transitions. Word has length 303 [2019-09-20 13:07:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:54,745 INFO L475 AbstractCegarLoop]: Abstraction has 4417 states and 5075 transitions. [2019-09-20 13:07:54,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:07:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 5075 transitions. [2019-09-20 13:07:54,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-09-20 13:07:54,764 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:54,765 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:54,765 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:54,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:54,766 INFO L82 PathProgramCache]: Analyzing trace with hash 611991244, now seen corresponding path program 1 times [2019-09-20 13:07:54,766 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:54,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:54,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:54,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:54,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 93 proven. 55 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2019-09-20 13:07:55,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:55,019 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:55,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:55,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:55,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 264 proven. 16 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:55,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:55,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:55,549 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:55,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:55,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:55,551 INFO L87 Difference]: Start difference. First operand 4417 states and 5075 transitions. Second operand 20 states. [2019-09-20 13:07:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:57,308 INFO L93 Difference]: Finished difference Result 8420 states and 9734 transitions. [2019-09-20 13:07:57,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:57,309 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 319 [2019-09-20 13:07:57,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:57,345 INFO L225 Difference]: With dead ends: 8420 [2019-09-20 13:07:57,345 INFO L226 Difference]: Without dead ends: 4433 [2019-09-20 13:07:57,362 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:57,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2019-09-20 13:07:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4421. [2019-09-20 13:07:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4421 states. [2019-09-20 13:07:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 5069 transitions. [2019-09-20 13:07:57,685 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 5069 transitions. Word has length 319 [2019-09-20 13:07:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:57,686 INFO L475 AbstractCegarLoop]: Abstraction has 4421 states and 5069 transitions. [2019-09-20 13:07:57,686 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 5069 transitions. [2019-09-20 13:07:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-09-20 13:07:57,702 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:57,702 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:57,703 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:57,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1601869462, now seen corresponding path program 1 times [2019-09-20 13:07:57,703 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:57,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:57,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:57,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:57,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-09-20 13:07:57,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:57,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-20 13:07:57,935 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:07:57,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:07:57,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:57,935 INFO L87 Difference]: Start difference. First operand 4421 states and 5069 transitions. Second operand 13 states. [2019-09-20 13:07:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:59,091 INFO L93 Difference]: Finished difference Result 8216 states and 9490 transitions. [2019-09-20 13:07:59,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:07:59,091 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 320 [2019-09-20 13:07:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:59,116 INFO L225 Difference]: With dead ends: 8216 [2019-09-20 13:07:59,116 INFO L226 Difference]: Without dead ends: 4225 [2019-09-20 13:07:59,128 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-09-20 13:07:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2019-09-20 13:07:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4181. [2019-09-20 13:07:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4181 states. [2019-09-20 13:07:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 4774 transitions. [2019-09-20 13:07:59,348 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 4774 transitions. Word has length 320 [2019-09-20 13:07:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:59,350 INFO L475 AbstractCegarLoop]: Abstraction has 4181 states and 4774 transitions. [2019-09-20 13:07:59,350 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:07:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 4774 transitions. [2019-09-20 13:07:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2019-09-20 13:07:59,369 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:59,369 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:59,370 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:59,370 INFO L82 PathProgramCache]: Analyzing trace with hash -18569412, now seen corresponding path program 1 times [2019-09-20 13:07:59,370 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:59,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:59,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:59,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:59,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 91 proven. 44 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-09-20 13:07:59,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:59,874 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:59,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:00,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:00,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 193 proven. 16 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-09-20 13:08:00,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:00,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:00,366 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:00,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:00,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:00,367 INFO L87 Difference]: Start difference. First operand 4181 states and 4774 transitions. Second operand 14 states. [2019-09-20 13:08:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:03,389 INFO L93 Difference]: Finished difference Result 9428 states and 11780 transitions. [2019-09-20 13:08:03,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:03,393 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 324 [2019-09-20 13:08:03,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:03,434 INFO L225 Difference]: With dead ends: 9428 [2019-09-20 13:08:03,434 INFO L226 Difference]: Without dead ends: 6953 [2019-09-20 13:08:03,445 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6953 states. [2019-09-20 13:08:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 5118. [2019-09-20 13:08:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5118 states. [2019-09-20 13:08:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 5850 transitions. [2019-09-20 13:08:03,772 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 5850 transitions. Word has length 324 [2019-09-20 13:08:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:03,773 INFO L475 AbstractCegarLoop]: Abstraction has 5118 states and 5850 transitions. [2019-09-20 13:08:03,773 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 5850 transitions. [2019-09-20 13:08:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2019-09-20 13:08:03,799 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:03,799 INFO L407 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:03,800 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:03,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1818045292, now seen corresponding path program 1 times [2019-09-20 13:08:03,801 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:03,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:03,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:03,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:03,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2019-09-20 13:08:04,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:04,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:04,079 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:04,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:04,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:04,080 INFO L87 Difference]: Start difference. First operand 5118 states and 5850 transitions. Second operand 4 states. [2019-09-20 13:08:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:04,427 INFO L93 Difference]: Finished difference Result 6236 states and 7172 transitions. [2019-09-20 13:08:04,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:04,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 435 [2019-09-20 13:08:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:04,448 INFO L225 Difference]: With dead ends: 6236 [2019-09-20 13:08:04,448 INFO L226 Difference]: Without dead ends: 2032 [2019-09-20 13:08:04,461 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2019-09-20 13:08:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1986. [2019-09-20 13:08:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1986 states. [2019-09-20 13:08:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2194 transitions. [2019-09-20 13:08:04,576 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2194 transitions. Word has length 435 [2019-09-20 13:08:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:04,577 INFO L475 AbstractCegarLoop]: Abstraction has 1986 states and 2194 transitions. [2019-09-20 13:08:04,577 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2194 transitions. [2019-09-20 13:08:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2019-09-20 13:08:04,589 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:04,589 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:04,589 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:04,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2080283791, now seen corresponding path program 1 times [2019-09-20 13:08:04,590 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:04,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:04,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:04,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 171 proven. 23 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-09-20 13:08:04,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:04,935 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:05,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-20 13:08:05,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 243 proven. 49 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2019-09-20 13:08:05,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:05,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2019-09-20 13:08:05,532 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:05,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:05,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:05,532 INFO L87 Difference]: Start difference. First operand 1986 states and 2194 transitions. Second operand 20 states.