/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:25:44,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:25:44,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:25:44,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:25:44,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:25:44,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:25:44,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:25:44,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:25:44,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:25:44,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:25:44,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:25:44,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:25:44,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:25:44,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:25:44,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:25:44,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:25:44,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:25:44,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:25:44,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:25:44,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:25:44,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:25:44,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:25:44,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:25:44,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:25:44,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:25:44,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:25:44,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:25:44,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:25:44,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:25:44,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:25:44,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:25:44,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:25:44,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:25:44,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:25:44,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:25:44,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:25:44,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:25:44,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:25:44,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:25:44,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:25:44,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:25:44,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:25:44,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:25:44,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:25:44,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:25:44,249 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:25:44,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:25:44,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:25:44,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:25:44,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:25:44,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:25:44,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:25:44,252 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:25:44,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:25:44,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:25:44,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:25:44,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:25:44,253 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:25:44,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:25:44,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:25:44,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:25:44,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:25:44,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:25:44,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:25:44,254 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:25:44,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:25:44,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:25:44,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:25:44,710 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:25:44,710 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:25:44,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2021-02-23 16:25:44,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2675dfb7/bf1c7c56ec2a482d96e90de06549a7f8/FLAG5dba7c2e5 [2021-02-23 16:25:45,329 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:25:45,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2021-02-23 16:25:45,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2675dfb7/bf1c7c56ec2a482d96e90de06549a7f8/FLAG5dba7c2e5 [2021-02-23 16:25:45,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2675dfb7/bf1c7c56ec2a482d96e90de06549a7f8 [2021-02-23 16:25:45,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:25:45,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:25:45,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:25:45,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:25:45,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:25:45,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:25:45" (1/1) ... [2021-02-23 16:25:45,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f70c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:45, skipping insertion in model container [2021-02-23 16:25:45,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:25:45" (1/1) ... [2021-02-23 16:25:45,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:25:45,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:25:45,974 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c[2573,2586] [2021-02-23 16:25:46,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:25:46,087 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:25:46,112 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c[2573,2586] [2021-02-23 16:25:46,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:25:46,283 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:25:46,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46 WrapperNode [2021-02-23 16:25:46,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:25:46,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:25:46,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:25:46,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:25:46,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (1/1) ... [2021-02-23 16:25:46,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (1/1) ... [2021-02-23 16:25:46,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (1/1) ... [2021-02-23 16:25:46,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (1/1) ... [2021-02-23 16:25:46,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (1/1) ... [2021-02-23 16:25:46,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (1/1) ... [2021-02-23 16:25:46,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (1/1) ... [2021-02-23 16:25:46,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:25:46,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:25:46,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:25:46,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:25:46,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (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 [2021-02-23 16:25:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:25:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:25:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:25:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:25:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:25:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:25:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:25:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:25:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:25:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:25:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:25:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:25:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:25:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:25:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:25:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:25:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:25:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:25:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:25:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:25:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:25:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:25:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:25:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:25:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:25:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:25:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:25:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:25:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:25:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:25:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:25:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:25:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:25:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:25:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:25:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:25:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:25:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:25:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:25:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:25:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:25:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:25:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:25:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:25:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:25:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:25:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:25:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:25:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:25:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:25:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:25:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:25:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:25:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:25:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:25:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:25:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:25:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:25:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:25:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:25:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:25:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:25:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:25:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:25:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:25:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:25:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:25:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:25:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:25:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:25:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:25:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:25:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:25:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:25:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:25:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:25:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:25:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:25:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-23 16:25:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:25:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:25:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:25:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:25:48,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:25:48,303 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:25:48,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:25:48 BoogieIcfgContainer [2021-02-23 16:25:48,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:25:48,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:25:48,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:25:48,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:25:48,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:25:45" (1/3) ... [2021-02-23 16:25:48,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1249eb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:25:48, skipping insertion in model container [2021-02-23 16:25:48,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:46" (2/3) ... [2021-02-23 16:25:48,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1249eb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:25:48, skipping insertion in model container [2021-02-23 16:25:48,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:25:48" (3/3) ... [2021-02-23 16:25:48,315 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2021-02-23 16:25:48,322 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:25:48,328 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:25:48,346 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:25:48,370 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:25:48,370 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:25:48,370 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:25:48,370 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:25:48,370 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:25:48,371 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:25:48,371 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:25:48,371 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:25:48,394 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states. [2021-02-23 16:25:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:25:48,413 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:48,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:25:48,415 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:48,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:48,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1496528977, now seen corresponding path program 1 times [2021-02-23 16:25:48,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:48,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567645820] [2021-02-23 16:25:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:48,512 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:48,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:48,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:48,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:48,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,385 WARN L202 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:49,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:49,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:49,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:49,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:49,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:49,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:49,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:49,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:49,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:49,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:25:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:49,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:49,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:25:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:49,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:49,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:25:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:49,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:49,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:49,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567645820] [2021-02-23 16:25:49,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:49,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:25:49,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725125186] [2021-02-23 16:25:49,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:25:49,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:49,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:25:49,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:25:49,613 INFO L87 Difference]: Start difference. First operand 321 states. Second operand 3 states. [2021-02-23 16:25:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:51,256 INFO L93 Difference]: Finished difference Result 503 states and 594 transitions. [2021-02-23 16:25:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:25:51,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:25:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:51,287 INFO L225 Difference]: With dead ends: 503 [2021-02-23 16:25:51,288 INFO L226 Difference]: Without dead ends: 312 [2021-02-23 16:25:51,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:25:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-23 16:25:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 269. [2021-02-23 16:25:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2021-02-23 16:25:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2021-02-23 16:25:51,493 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 158 [2021-02-23 16:25:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:51,494 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2021-02-23 16:25:51,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:25:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2021-02-23 16:25:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:25:51,499 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:51,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:25:51,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:25:51,500 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:51,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1512702236, now seen corresponding path program 1 times [2021-02-23 16:25:51,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:51,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670159313] [2021-02-23 16:25:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:51,505 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:51,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,887 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:51,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:25:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:25:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:25:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:51,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:51,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:52,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670159313] [2021-02-23 16:25:52,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:52,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:25:52,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045134369] [2021-02-23 16:25:52,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:25:52,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:52,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:25:52,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:25:52,015 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 4 states. [2021-02-23 16:25:52,734 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:25:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:53,816 INFO L93 Difference]: Finished difference Result 410 states and 458 transitions. [2021-02-23 16:25:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:25:53,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:25:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:53,822 INFO L225 Difference]: With dead ends: 410 [2021-02-23 16:25:53,822 INFO L226 Difference]: Without dead ends: 295 [2021-02-23 16:25:53,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:25:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-23 16:25:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 259. [2021-02-23 16:25:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-02-23 16:25:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 278 transitions. [2021-02-23 16:25:53,944 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 278 transitions. Word has length 159 [2021-02-23 16:25:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:53,944 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 278 transitions. [2021-02-23 16:25:53,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:25:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 278 transitions. [2021-02-23 16:25:53,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:25:53,947 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:53,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:25:53,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:25:53,948 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:53,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:53,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1024484371, now seen corresponding path program 1 times [2021-02-23 16:25:53,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:53,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749392266] [2021-02-23 16:25:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:53,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:54,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:54,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:54,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:54,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:25:54,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:25:54,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:25:54,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,380 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:25:54,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:25:54,488 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:25:54,489 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:25:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:25:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:25:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:25:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:54,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:54,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:54,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749392266] [2021-02-23 16:25:54,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:54,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:25:54,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893079170] [2021-02-23 16:25:54,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:25:54,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:54,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:25:54,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:25:54,595 INFO L87 Difference]: Start difference. First operand 259 states and 278 transitions. Second operand 9 states. [2021-02-23 16:25:55,185 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:25:55,619 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:25:55,986 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:25:56,366 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:56,757 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:25:57,107 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:58,102 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:26:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:00,379 INFO L93 Difference]: Finished difference Result 689 states and 785 transitions. [2021-02-23 16:26:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:26:00,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:26:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:00,387 INFO L225 Difference]: With dead ends: 689 [2021-02-23 16:26:00,387 INFO L226 Difference]: Without dead ends: 545 [2021-02-23 16:26:00,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:26:00,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-02-23 16:26:00,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 466. [2021-02-23 16:26:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2021-02-23 16:26:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 515 transitions. [2021-02-23 16:26:00,635 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 515 transitions. Word has length 168 [2021-02-23 16:26:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:00,636 INFO L480 AbstractCegarLoop]: Abstraction has 466 states and 515 transitions. [2021-02-23 16:26:00,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:26:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 515 transitions. [2021-02-23 16:26:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 16:26:00,640 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:00,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:26:00,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:26:00,641 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash -751554570, now seen corresponding path program 1 times [2021-02-23 16:26:00,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:00,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011782833] [2021-02-23 16:26:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:00,646 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:00,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:00,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:00,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:00,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:00,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:00,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:00,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:00,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:00,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:00,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:00,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:00,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,013 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:01,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:26:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:01,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:26:01,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:26:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:26:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:26:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:26:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:01,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:01,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:26:01,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011782833] [2021-02-23 16:26:01,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:01,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:26:01,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444578944] [2021-02-23 16:26:01,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:26:01,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:01,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:26:01,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:26:01,231 INFO L87 Difference]: Start difference. First operand 466 states and 515 transitions. Second operand 6 states. [2021-02-23 16:26:01,857 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:03,717 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:26:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:04,490 INFO L93 Difference]: Finished difference Result 1171 states and 1362 transitions. [2021-02-23 16:26:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:26:04,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2021-02-23 16:26:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:04,500 INFO L225 Difference]: With dead ends: 1171 [2021-02-23 16:26:04,500 INFO L226 Difference]: Without dead ends: 820 [2021-02-23 16:26:04,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:26:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-02-23 16:26:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 704. [2021-02-23 16:26:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2021-02-23 16:26:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 777 transitions. [2021-02-23 16:26:04,851 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 777 transitions. Word has length 176 [2021-02-23 16:26:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:04,852 INFO L480 AbstractCegarLoop]: Abstraction has 704 states and 777 transitions. [2021-02-23 16:26:04,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:26:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 777 transitions. [2021-02-23 16:26:04,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:26:04,855 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:04,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:26:04,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:26:04,855 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:04,856 INFO L82 PathProgramCache]: Analyzing trace with hash -775423515, now seen corresponding path program 1 times [2021-02-23 16:26:04,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:04,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964965464] [2021-02-23 16:26:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:04,859 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:04,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:04,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:04,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:04,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:04,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:04,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:04,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:04,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:04,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:04,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:04,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:04,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:04,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:04,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:04,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:04,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,222 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:26:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:26:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:26:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-23 16:26:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:05,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:05,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-23 16:26:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:05,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:05,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:26:05,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964965464] [2021-02-23 16:26:05,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:05,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:26:05,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272621801] [2021-02-23 16:26:05,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:26:05,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:05,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:26:05,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:26:05,379 INFO L87 Difference]: Start difference. First operand 704 states and 777 transitions. Second operand 9 states. [2021-02-23 16:26:05,999 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:07,585 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:07,972 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:26:08,404 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:08,815 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:09,182 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:26:09,551 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:09,920 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:11,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:11,566 INFO L93 Difference]: Finished difference Result 1817 states and 2106 transitions. [2021-02-23 16:26:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:26:11,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-23 16:26:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:11,576 INFO L225 Difference]: With dead ends: 1817 [2021-02-23 16:26:11,576 INFO L226 Difference]: Without dead ends: 1228 [2021-02-23 16:26:11,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:26:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-02-23 16:26:12,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1145. [2021-02-23 16:26:12,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2021-02-23 16:26:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1280 transitions. [2021-02-23 16:26:12,113 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1280 transitions. Word has length 177 [2021-02-23 16:26:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:12,114 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 1280 transitions. [2021-02-23 16:26:12,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:26:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1280 transitions. [2021-02-23 16:26:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:26:12,118 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:12,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:26:12,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:26:12,118 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:12,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1051388138, now seen corresponding path program 1 times [2021-02-23 16:26:12,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:12,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197017166] [2021-02-23 16:26:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:12,122 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:26:12,195 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:26:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:26:12,274 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:26:12,491 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:26:12,492 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:26:12,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:26:12,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:26:12 BoogieIcfgContainer [2021-02-23 16:26:12,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:26:12,517 INFO L168 Benchmark]: Toolchain (without parser) took 26849.69 ms. Allocated memory was 154.1 MB in the beginning and 644.9 MB in the end (delta: 490.7 MB). Free memory was 137.7 MB in the beginning and 528.4 MB in the end (delta: -390.7 MB). Peak memory consumption was 99.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:12,518 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:26:12,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.09 ms. Allocated memory is still 154.1 MB. Free memory was 136.6 MB in the beginning and 115.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:12,518 INFO L168 Benchmark]: Boogie Preprocessor took 219.60 ms. Allocated memory is still 154.1 MB. Free memory was 115.8 MB in the beginning and 133.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:12,519 INFO L168 Benchmark]: RCFGBuilder took 1800.12 ms. Allocated memory was 154.1 MB in the beginning and 196.1 MB in the end (delta: 41.9 MB). Free memory was 133.1 MB in the beginning and 116.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 60.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:12,519 INFO L168 Benchmark]: TraceAbstraction took 24208.42 ms. Allocated memory was 196.1 MB in the beginning and 644.9 MB in the end (delta: 448.8 MB). Free memory was 116.1 MB in the beginning and 528.4 MB in the end (delta: -412.3 MB). Peak memory consumption was 36.4 MB. Max. memory is 8.0 GB. [2021-02-23 16:26:12,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 600.09 ms. Allocated memory is still 154.1 MB. Free memory was 136.6 MB in the beginning and 115.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 219.60 ms. Allocated memory is still 154.1 MB. Free memory was 115.8 MB in the beginning and 133.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1800.12 ms. Allocated memory was 154.1 MB in the beginning and 196.1 MB in the end (delta: 41.9 MB). Free memory was 133.1 MB in the beginning and 116.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 60.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24208.42 ms. Allocated memory was 196.1 MB in the beginning and 644.9 MB in the end (delta: 448.8 MB). Free memory was 116.1 MB in the beginning and 528.4 MB in the end (delta: -412.3 MB). Peak memory consumption was 36.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L361] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L599] int pumpRunning = 0; [L600] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L785] int splverifierCounter ; [L786] int tmp ; [L787] int tmp___0 ; [L788] int tmp___1 ; [L789] int tmp___2 ; [L792] splverifierCounter = 0 [L794] COND TRUE 1 [L796] COND TRUE splverifierCounter < 4 [L802] tmp = __VERIFIER_nondet_int() [L804] COND TRUE \read(tmp) [L806] CALL waterRise() [L869] COND TRUE waterLevel < 2 [L870] waterLevel = waterLevel + 1 [L806] RET waterRise() [L812] tmp___0 = __VERIFIER_nondet_int() [L814] COND FALSE !(\read(tmp___0)) [L822] tmp___2 = __VERIFIER_nondet_int() [L824] COND FALSE !(\read(tmp___2)) [L828] tmp___1 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___1) [L832] CALL stopSystem() [L772] COND FALSE !(\read(pumpRunning)) [L779] systemActive = 0 [L832] RET stopSystem() [L839] CALL timeShift() [L606] COND FALSE !(\read(pumpRunning)) [L613] COND FALSE !(\read(systemActive)) [L621] CALL __utac_acc__Specification3_spec__1() [L159] int tmp ; [L160] int tmp___0 ; [L161] int tmp___1 ; [L165] CALL, EXPR isMethaneLevelCritical() [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); [L165] RET, EXPR isMethaneLevelCritical() [L165] tmp = isMethaneLevelCritical() [L167] COND FALSE !(\read(tmp)) [L171] CALL, EXPR getWaterLevel() [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp___0 = getWaterLevel() [L173] COND TRUE tmp___0 == 2 [L175] CALL, EXPR isPumpRunning() [L705] int retValue_acc ; [L708] retValue_acc = pumpRunning [L709] return (retValue_acc); [L175] RET, EXPR isPumpRunning() [L175] tmp___1 = isPumpRunning() [L177] COND FALSE !(\read(tmp___1)) [L181] CALL __automaton_fail() [L150] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 636 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 18.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1285 SDtfs, 1749 SDslu, 1693 SDs, 0 SdLazy, 3644 SolverSat, 547 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1145occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 357 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...