/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:54:44,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:54:44,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:54:44,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:54:44,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:54:44,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:54:44,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:54:44,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:54:44,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:54:44,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:54:44,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:54:44,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:54:44,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:54:44,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:54:44,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:54:44,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:54:44,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:54:44,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:54:44,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:54:44,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:54:44,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:54:44,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:54:44,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:54:44,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:54:45,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:54:45,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:54:45,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:54:45,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:54:45,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:54:45,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:54:45,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:54:45,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:54:45,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:54:45,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:54:45,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:54:45,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:54:45,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:54:45,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:54:45,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:54:45,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:54:45,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:54:45,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:54:45,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:54:45,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:54:45,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:54:45,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:54:45,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:54:45,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:54:45,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:54:45,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:54:45,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:54:45,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:54:45,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:54:45,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:54:45,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:54:45,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:54:45,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:54:45,037 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:54:45,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:54:45,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:54:45,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:54:45,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:54:45,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:54:45,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:54:45,039 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:54:45,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:54:45,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:54:45,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:54:45,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:54:45,388 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:54:45,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-22 17:54:45,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ef980bf/f0bafca91db649dc97ed6149a37cdd88/FLAGc907144ff [2020-08-22 17:54:46,008 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:54:46,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-22 17:54:46,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ef980bf/f0bafca91db649dc97ed6149a37cdd88/FLAGc907144ff [2020-08-22 17:54:46,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ef980bf/f0bafca91db649dc97ed6149a37cdd88 [2020-08-22 17:54:46,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:54:46,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:54:46,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:46,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:54:46,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:54:46,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:46" (1/1) ... [2020-08-22 17:54:46,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:46, skipping insertion in model container [2020-08-22 17:54:46,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:46" (1/1) ... [2020-08-22 17:54:46,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:54:46,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:54:46,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:46,890 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:54:47,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:47,036 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:54:47,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47 WrapperNode [2020-08-22 17:54:47,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:47,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:54:47,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:54:47,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:54:47,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (1/1) ... [2020-08-22 17:54:47,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (1/1) ... [2020-08-22 17:54:47,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (1/1) ... [2020-08-22 17:54:47,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (1/1) ... [2020-08-22 17:54:47,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (1/1) ... [2020-08-22 17:54:47,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (1/1) ... [2020-08-22 17:54:47,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (1/1) ... [2020-08-22 17:54:47,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:54:47,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:54:47,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:54:47,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:54:47,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:54:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:54:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:54:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:54:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:54:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:54:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:54:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:54:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:54:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:54:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:54:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:54:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:54:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 17:54:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:54:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:54:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:54:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:54:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:54:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:54:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:54:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 17:54:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:54:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:54:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:54:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:54:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:54:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:54:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:54:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:54:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:54:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:54:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:54:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:54:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 17:54:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:54:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:54:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:54:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:54:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:54:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:54:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:54:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:54:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:54:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:54:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:54:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:54:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:54:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:54:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:54:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:54:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:54:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:54:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:54:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:54:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:54:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:54:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:54:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:54:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:54:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:54:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:54:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:54:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:54:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:54:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:54:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:54:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:54:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:54:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:54:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:54:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 17:54:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:54:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:54:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:54:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:54:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:54:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 17:54:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 17:54:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:54:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:54:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:54:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:54:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:54:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:54:48,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:54:48,436 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:54:48,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:48 BoogieIcfgContainer [2020-08-22 17:54:48,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:54:48,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:54:48,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:54:48,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:54:48,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:54:46" (1/3) ... [2020-08-22 17:54:48,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7858591f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:48, skipping insertion in model container [2020-08-22 17:54:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:47" (2/3) ... [2020-08-22 17:54:48,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7858591f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:48, skipping insertion in model container [2020-08-22 17:54:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:48" (3/3) ... [2020-08-22 17:54:48,452 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-08-22 17:54:48,463 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:54:48,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:54:48,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:54:48,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:54:48,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:54:48,514 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:54:48,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:54:48,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:54:48,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:54:48,516 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:54:48,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:54:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2020-08-22 17:54:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 17:54:48,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:48,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:48,596 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:48,603 INFO L82 PathProgramCache]: Analyzing trace with hash -231713174, now seen corresponding path program 1 times [2020-08-22 17:54:48,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:48,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010694001] [2020-08-22 17:54:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:48,694 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,368 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:54:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:49,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010694001] [2020-08-22 17:54:49,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:49,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 17:54:49,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115747648] [2020-08-22 17:54:49,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 17:54:49,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:49,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 17:54:49,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:54:49,588 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 3 states. [2020-08-22 17:54:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:50,947 INFO L93 Difference]: Finished difference Result 489 states and 580 transitions. [2020-08-22 17:54:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 17:54:50,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 17:54:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:50,968 INFO L225 Difference]: With dead ends: 489 [2020-08-22 17:54:50,969 INFO L226 Difference]: Without dead ends: 302 [2020-08-22 17:54:50,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:54:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-08-22 17:54:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 261. [2020-08-22 17:54:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-08-22 17:54:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 283 transitions. [2020-08-22 17:54:51,118 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 283 transitions. Word has length 142 [2020-08-22 17:54:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:51,119 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 283 transitions. [2020-08-22 17:54:51,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 17:54:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 283 transitions. [2020-08-22 17:54:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 17:54:51,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:51,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:51,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:54:51,124 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:51,125 INFO L82 PathProgramCache]: Analyzing trace with hash 259002356, now seen corresponding path program 1 times [2020-08-22 17:54:51,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:51,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321400568] [2020-08-22 17:54:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:51,129 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,533 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:51,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:54:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:51,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321400568] [2020-08-22 17:54:51,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:51,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:54:51,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497573460] [2020-08-22 17:54:51,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:54:51,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:51,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:54:51,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:54:51,614 INFO L87 Difference]: Start difference. First operand 261 states and 283 transitions. Second operand 4 states. [2020-08-22 17:54:52,234 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:53,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:53,170 INFO L93 Difference]: Finished difference Result 406 states and 455 transitions. [2020-08-22 17:54:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:54:53,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 17:54:53,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:53,179 INFO L225 Difference]: With dead ends: 406 [2020-08-22 17:54:53,179 INFO L226 Difference]: Without dead ends: 285 [2020-08-22 17:54:53,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:54:53,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-22 17:54:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-08-22 17:54:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-08-22 17:54:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 270 transitions. [2020-08-22 17:54:53,261 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 270 transitions. Word has length 143 [2020-08-22 17:54:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:53,262 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 270 transitions. [2020-08-22 17:54:53,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:54:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 270 transitions. [2020-08-22 17:54:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 17:54:53,265 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:53,266 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] [2020-08-22 17:54:53,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:54:53,266 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:53,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1790714059, now seen corresponding path program 1 times [2020-08-22 17:54:53,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:53,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059850306] [2020-08-22 17:54:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:53,270 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,607 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:54:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 17:54:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:53,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059850306] [2020-08-22 17:54:53,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:53,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:54:53,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965003725] [2020-08-22 17:54:53,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:54:53,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:53,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:54:53,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:54:53,832 INFO L87 Difference]: Start difference. First operand 251 states and 270 transitions. Second operand 9 states. [2020-08-22 17:54:54,305 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:54,635 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:54,884 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:54:55,172 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:55,403 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:55,631 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:57,017 INFO L93 Difference]: Finished difference Result 426 states and 480 transitions. [2020-08-22 17:54:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 17:54:57,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-08-22 17:54:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:57,022 INFO L225 Difference]: With dead ends: 426 [2020-08-22 17:54:57,022 INFO L226 Difference]: Without dead ends: 285 [2020-08-22 17:54:57,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-08-22 17:54:57,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-22 17:54:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-08-22 17:54:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-08-22 17:54:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 269 transitions. [2020-08-22 17:54:57,098 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 269 transitions. Word has length 152 [2020-08-22 17:54:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:57,098 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 269 transitions. [2020-08-22 17:54:57,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:54:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 269 transitions. [2020-08-22 17:54:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-08-22 17:54:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:57,101 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] [2020-08-22 17:54:57,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:54:57,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:57,102 INFO L82 PathProgramCache]: Analyzing trace with hash -196376212, now seen corresponding path program 1 times [2020-08-22 17:54:57,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:57,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30715514] [2020-08-22 17:54:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:57,105 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,410 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:54:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:54:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:54:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:57,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30715514] [2020-08-22 17:54:57,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:57,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 17:54:57,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721991432] [2020-08-22 17:54:57,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 17:54:57,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:57,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 17:54:57,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 17:54:57,662 INFO L87 Difference]: Start difference. First operand 251 states and 269 transitions. Second operand 6 states. [2020-08-22 17:54:58,179 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:59,576 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:00,323 INFO L93 Difference]: Finished difference Result 557 states and 635 transitions. [2020-08-22 17:55:00,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 17:55:00,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-08-22 17:55:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:00,330 INFO L225 Difference]: With dead ends: 557 [2020-08-22 17:55:00,330 INFO L226 Difference]: Without dead ends: 416 [2020-08-22 17:55:00,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:55:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-08-22 17:55:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 357. [2020-08-22 17:55:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-22 17:55:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 384 transitions. [2020-08-22 17:55:00,464 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 384 transitions. Word has length 165 [2020-08-22 17:55:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:00,465 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 384 transitions. [2020-08-22 17:55:00,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 17:55:00,465 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 384 transitions. [2020-08-22 17:55:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 17:55:00,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:00,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:00,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:55:00,469 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:00,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:00,469 INFO L82 PathProgramCache]: Analyzing trace with hash 875812700, now seen corresponding path program 1 times [2020-08-22 17:55:00,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:00,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718394965] [2020-08-22 17:55:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:00,473 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,899 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:00,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:55:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:01,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:01,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 17:55:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:55:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:01,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718394965] [2020-08-22 17:55:01,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:01,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:55:01,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271797002] [2020-08-22 17:55:01,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:55:01,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:01,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:55:01,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:55:01,093 INFO L87 Difference]: Start difference. First operand 357 states and 384 transitions. Second operand 9 states. [2020-08-22 17:55:01,549 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:02,911 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:03,160 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:03,403 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:03,643 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:03,863 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:04,094 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:04,378 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:04,741 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:05,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:05,945 INFO L93 Difference]: Finished difference Result 905 states and 1041 transitions. [2020-08-22 17:55:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:55:05,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 189 [2020-08-22 17:55:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:05,959 INFO L225 Difference]: With dead ends: 905 [2020-08-22 17:55:05,960 INFO L226 Difference]: Without dead ends: 658 [2020-08-22 17:55:05,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-08-22 17:55:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-08-22 17:55:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 567. [2020-08-22 17:55:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-22 17:55:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 616 transitions. [2020-08-22 17:55:06,179 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 616 transitions. Word has length 189 [2020-08-22 17:55:06,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:06,179 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 616 transitions. [2020-08-22 17:55:06,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:55:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 616 transitions. [2020-08-22 17:55:06,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-08-22 17:55:06,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:06,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:06,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:55:06,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:06,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:06,184 INFO L82 PathProgramCache]: Analyzing trace with hash -507166185, now seen corresponding path program 1 times [2020-08-22 17:55:06,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:06,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940461917] [2020-08-22 17:55:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:06,187 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,480 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:55:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-22 17:55:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 17:55:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:06,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940461917] [2020-08-22 17:55:06,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:06,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:55:06,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819586362] [2020-08-22 17:55:06,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:55:06,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:06,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:55:06,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:55:06,679 INFO L87 Difference]: Start difference. First operand 567 states and 616 transitions. Second operand 10 states. [2020-08-22 17:55:07,153 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:08,504 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:08,721 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:08,963 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:09,199 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:09,466 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:09,754 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:10,004 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:10,259 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:11,283 INFO L93 Difference]: Finished difference Result 724 states and 838 transitions. [2020-08-22 17:55:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 17:55:11,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-08-22 17:55:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:11,289 INFO L225 Difference]: With dead ends: 724 [2020-08-22 17:55:11,289 INFO L226 Difference]: Without dead ends: 721 [2020-08-22 17:55:11,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-08-22 17:55:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-08-22 17:55:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 567. [2020-08-22 17:55:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-22 17:55:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 615 transitions. [2020-08-22 17:55:11,494 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 615 transitions. Word has length 194 [2020-08-22 17:55:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:11,495 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 615 transitions. [2020-08-22 17:55:11,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 615 transitions. [2020-08-22 17:55:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-22 17:55:11,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:11,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:11,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:55:11,498 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:11,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:11,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1999533266, now seen corresponding path program 1 times [2020-08-22 17:55:11,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:11,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055826173] [2020-08-22 17:55:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:11,502 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,809 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:11,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:55:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:55:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:55:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:12,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055826173] [2020-08-22 17:55:12,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:12,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:55:12,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830578115] [2020-08-22 17:55:12,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:55:12,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:12,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:55:12,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:55:12,029 INFO L87 Difference]: Start difference. First operand 567 states and 615 transitions. Second operand 10 states. [2020-08-22 17:55:13,136 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:13,389 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:13,631 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:55:13,867 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:14,113 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:14,330 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:15,643 INFO L93 Difference]: Finished difference Result 1188 states and 1364 transitions. [2020-08-22 17:55:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 17:55:15,644 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-08-22 17:55:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:15,652 INFO L225 Difference]: With dead ends: 1188 [2020-08-22 17:55:15,652 INFO L226 Difference]: Without dead ends: 731 [2020-08-22 17:55:15,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-08-22 17:55:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-22 17:55:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 583. [2020-08-22 17:55:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-08-22 17:55:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 631 transitions. [2020-08-22 17:55:15,906 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 631 transitions. Word has length 195 [2020-08-22 17:55:15,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:15,907 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 631 transitions. [2020-08-22 17:55:15,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 631 transitions. [2020-08-22 17:55:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-22 17:55:15,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:15,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:15,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:55:15,910 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:15,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1025663090, now seen corresponding path program 1 times [2020-08-22 17:55:15,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:15,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680076624] [2020-08-22 17:55:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:15,916 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,214 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:16,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:55:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:55:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:55:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:16,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680076624] [2020-08-22 17:55:16,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:16,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 17:55:16,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102089664] [2020-08-22 17:55:16,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 17:55:16,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 17:55:16,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-08-22 17:55:16,412 INFO L87 Difference]: Start difference. First operand 583 states and 631 transitions. Second operand 13 states. [2020-08-22 17:55:16,954 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:17,209 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:17,451 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:17,696 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:17,943 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:18,695 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:18,934 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:19,190 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:19,445 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:19,666 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:21,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:21,002 INFO L93 Difference]: Finished difference Result 1226 states and 1418 transitions. [2020-08-22 17:55:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:55:21,003 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2020-08-22 17:55:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:21,008 INFO L225 Difference]: With dead ends: 1226 [2020-08-22 17:55:21,008 INFO L226 Difference]: Without dead ends: 753 [2020-08-22 17:55:21,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-08-22 17:55:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-08-22 17:55:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 595. [2020-08-22 17:55:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-08-22 17:55:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 643 transitions. [2020-08-22 17:55:21,208 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 643 transitions. Word has length 195 [2020-08-22 17:55:21,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:21,208 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 643 transitions. [2020-08-22 17:55:21,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 17:55:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 643 transitions. [2020-08-22 17:55:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-22 17:55:21,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:21,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:21,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:55:21,211 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:21,212 INFO L82 PathProgramCache]: Analyzing trace with hash -614630891, now seen corresponding path program 1 times [2020-08-22 17:55:21,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:21,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487048393] [2020-08-22 17:55:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:21,214 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,465 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:55:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:55:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:55:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:21,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487048393] [2020-08-22 17:55:21,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:21,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 17:55:21,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575900238] [2020-08-22 17:55:21,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 17:55:21,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:21,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 17:55:21,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:55:21,680 INFO L87 Difference]: Start difference. First operand 595 states and 643 transitions. Second operand 7 states. [2020-08-22 17:55:22,237 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:22,939 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:25,229 INFO L93 Difference]: Finished difference Result 1671 states and 1982 transitions. [2020-08-22 17:55:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:55:25,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-08-22 17:55:25,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:25,237 INFO L225 Difference]: With dead ends: 1671 [2020-08-22 17:55:25,237 INFO L226 Difference]: Without dead ends: 1186 [2020-08-22 17:55:25,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-08-22 17:55:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-08-22 17:55:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1013. [2020-08-22 17:55:25,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-08-22 17:55:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1135 transitions. [2020-08-22 17:55:25,566 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1135 transitions. Word has length 195 [2020-08-22 17:55:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:25,566 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1135 transitions. [2020-08-22 17:55:25,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 17:55:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1135 transitions. [2020-08-22 17:55:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 17:55:25,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:25,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:25,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:55:25,570 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:25,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:25,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1775813522, now seen corresponding path program 1 times [2020-08-22 17:55:25,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:25,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736948475] [2020-08-22 17:55:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:25,573 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:55:25,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:55:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:55:25,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:55:25,869 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:55:25,869 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:55:25,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:55:25,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:55:25 BoogieIcfgContainer [2020-08-22 17:55:25,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:55:25,897 INFO L168 Benchmark]: Toolchain (without parser) took 39586.55 ms. Allocated memory was 140.0 MB in the beginning and 839.4 MB in the end (delta: 699.4 MB). Free memory was 103.3 MB in the beginning and 636.1 MB in the end (delta: -532.7 MB). Peak memory consumption was 166.7 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:25,898 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 17:55:25,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.85 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.1 MB in the beginning and 168.1 MB in the end (delta: -65.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:25,899 INFO L168 Benchmark]: Boogie Preprocessor took 96.09 ms. Allocated memory is still 202.9 MB. Free memory was 168.1 MB in the beginning and 164.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:25,900 INFO L168 Benchmark]: RCFGBuilder took 1309.94 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 164.2 MB in the beginning and 169.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:25,901 INFO L168 Benchmark]: TraceAbstraction took 37450.65 ms. Allocated memory was 235.9 MB in the beginning and 839.4 MB in the end (delta: 603.5 MB). Free memory was 169.9 MB in the beginning and 636.1 MB in the end (delta: -466.2 MB). Peak memory consumption was 137.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:25,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.85 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.1 MB in the beginning and 168.1 MB in the end (delta: -65.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.09 ms. Allocated memory is still 202.9 MB. Free memory was 168.1 MB in the beginning and 164.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1309.94 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 164.2 MB in the beginning and 169.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37450.65 ms. Allocated memory was 235.9 MB in the beginning and 839.4 MB in the end (delta: 603.5 MB). Free memory was 169.9 MB in the beginning and 636.1 MB in the end (delta: -466.2 MB). Peak memory consumption was 137.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 [L752] COND TRUE 1 [L754] COND TRUE splverifierCounter < 4 [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) [L764] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L764] RET waterRise() [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) [L774] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L774] RET changeMethaneLevel() [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) [L795] CALL timeShift() [L552] COND FALSE !(\read(pumpRunning)) [L559] COND TRUE \read(systemActive) [L561] CALL processEnvironment() [L607] int tmp ; [L610] COND FALSE !(\read(pumpRunning)) [L625] CALL processEnvironment__wrappee__highWaterSensor() [L581] int tmp ; [L584] COND TRUE ! pumpRunning [L586] CALL, EXPR isHighWaterLevel() [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L710] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L710] RET, EXPR isHighWaterSensorDry() [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); [L586] RET, EXPR isHighWaterLevel() [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L590] CALL activatePump() [L635] pumpRunning = 1 [L590] RET activatePump() [L625] RET processEnvironment__wrappee__highWaterSensor() [L561] RET processEnvironment() [L567] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L950] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 637 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2221 SDtfs, 3891 SDslu, 3824 SDs, 0 SdLazy, 7854 SolverSat, 1109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1013occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 892 StatesRemovedByMinimization, 9 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...