/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:54:32,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:54:32,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:54:32,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:54:32,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:54:32,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:54:32,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:54:32,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:54:32,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:54:32,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:54:32,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:54:32,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:54:32,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:54:32,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:54:32,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:54:32,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:54:32,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:54:32,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:54:32,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:54:32,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:54:32,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:54:32,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:54:32,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:54:32,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:54:32,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:54:32,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:54:32,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:54:32,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:54:32,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:54:32,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:54:32,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:54:32,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:54:32,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:54:32,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:54:32,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:54:32,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:54:32,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:54:32,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:54:32,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:54:32,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:54:32,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:54:32,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:54:32,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:54:32,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:54:33,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:54:33,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:54:33,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:54:33,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:54:33,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:54:33,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:54:33,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:54:33,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:54:33,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:54:33,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:54:33,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:54:33,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:54:33,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:54:33,004 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:54:33,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:54:33,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:54:33,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:54:33,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:54:33,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:54:33,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:54:33,005 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:54:33,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:54:33,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:54:33,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:54:33,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:54:33,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:54:33,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-10-23 19:54:33,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4a5b17f/c17e709ce0d64ae987eae8c5352f91bd/FLAGe75412e93 [2020-10-23 19:54:34,342 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:54:34,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-10-23 19:54:34,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4a5b17f/c17e709ce0d64ae987eae8c5352f91bd/FLAGe75412e93 [2020-10-23 19:54:34,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4a5b17f/c17e709ce0d64ae987eae8c5352f91bd [2020-10-23 19:54:34,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:54:34,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:54:34,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:34,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:54:34,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:54:34,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:34" (1/1) ... [2020-10-23 19:54:34,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526d158b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:34, skipping insertion in model container [2020-10-23 19:54:34,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:34" (1/1) ... [2020-10-23 19:54:34,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:54:34,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:54:35,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:35,122 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:54:35,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:35,301 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:54:35,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35 WrapperNode [2020-10-23 19:54:35,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:35,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:54:35,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:54:35,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:54:35,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (1/1) ... [2020-10-23 19:54:35,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (1/1) ... [2020-10-23 19:54:35,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (1/1) ... [2020-10-23 19:54:35,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (1/1) ... [2020-10-23 19:54:35,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (1/1) ... [2020-10-23 19:54:35,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (1/1) ... [2020-10-23 19:54:35,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (1/1) ... [2020-10-23 19:54:35,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:54:35,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:54:35,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:54:35,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:54:35,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (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 [2020-10-23 19:54:35,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:54:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:54:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:54:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:54:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:54:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:54:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:54:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:54:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:54:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:54:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:54:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:54:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:54:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:54:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:54:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:54:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:54:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:54:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:54:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:54:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:54:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:54:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:54:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:54:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:54:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:54:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:54:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:54:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:54:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 19:54:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:54:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:54:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:54:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:54:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:54:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:54:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:54:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:54:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:54:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:54:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:54:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:54:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:54:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:54:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:54:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:54:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:54:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:54:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:54:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:54:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:54:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:54:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:54:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:54:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:54:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:54:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:54:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:54:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:54:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:54:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:54:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:54:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:54:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:54:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:54:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:54:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:54:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:54:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:54:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:54:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:54:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:54:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:54:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:54:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:54:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:54:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:54:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:54:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:54:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:54:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:54:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:54:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:54:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:54:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-23 19:54:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:54:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:54:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:54:37,430 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:54:37,431 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:54:37,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:37 BoogieIcfgContainer [2020-10-23 19:54:37,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:54:37,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:54:37,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:54:37,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:54:37,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:54:34" (1/3) ... [2020-10-23 19:54:37,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3942cf53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:37, skipping insertion in model container [2020-10-23 19:54:37,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:35" (2/3) ... [2020-10-23 19:54:37,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3942cf53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:37, skipping insertion in model container [2020-10-23 19:54:37,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:37" (3/3) ... [2020-10-23 19:54:37,443 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2020-10-23 19:54:37,456 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:54:37,463 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:54:37,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:54:37,505 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:54:37,505 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:54:37,506 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:54:37,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:54:37,506 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:54:37,506 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:54:37,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:54:37,506 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:54:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2020-10-23 19:54:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:54:37,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:37,558 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] [2020-10-23 19:54:37,559 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1578832438, now seen corresponding path program 1 times [2020-10-23 19:54:37,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:37,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385103241] [2020-10-23 19:54:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:37,658 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,748 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:54:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:38,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385103241] [2020-10-23 19:54:38,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:38,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:54:38,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134694689] [2020-10-23 19:54:38,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:54:38,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:54:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:38,965 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 4 states. [2020-10-23 19:54:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:41,732 INFO L93 Difference]: Finished difference Result 574 states and 679 transitions. [2020-10-23 19:54:41,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:54:41,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:54:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:41,755 INFO L225 Difference]: With dead ends: 574 [2020-10-23 19:54:41,755 INFO L226 Difference]: Without dead ends: 356 [2020-10-23 19:54:41,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-23 19:54:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 305. [2020-10-23 19:54:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-23 19:54:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 335 transitions. [2020-10-23 19:54:41,965 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 335 transitions. Word has length 154 [2020-10-23 19:54:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:41,969 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 335 transitions. [2020-10-23 19:54:41,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:54:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 335 transitions. [2020-10-23 19:54:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:54:41,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:41,986 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] [2020-10-23 19:54:41,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:54:41,988 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:41,988 INFO L82 PathProgramCache]: Analyzing trace with hash 581408659, now seen corresponding path program 1 times [2020-10-23 19:54:41,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:41,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127227587] [2020-10-23 19:54:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:42,000 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,757 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:54:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:54:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:42,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127227587] [2020-10-23 19:54:42,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:42,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:54:42,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651829150] [2020-10-23 19:54:42,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:54:42,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:42,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:54:42,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:54:42,934 INFO L87 Difference]: Start difference. First operand 305 states and 335 transitions. Second operand 5 states. [2020-10-23 19:54:44,371 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:46,806 INFO L93 Difference]: Finished difference Result 500 states and 570 transitions. [2020-10-23 19:54:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:54:46,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:54:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:46,814 INFO L225 Difference]: With dead ends: 500 [2020-10-23 19:54:46,814 INFO L226 Difference]: Without dead ends: 345 [2020-10-23 19:54:46,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:54:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-23 19:54:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 295. [2020-10-23 19:54:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-23 19:54:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2020-10-23 19:54:46,941 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 155 [2020-10-23 19:54:46,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:46,942 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2020-10-23 19:54:46,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:54:46,942 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2020-10-23 19:54:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-23 19:54:46,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:46,945 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] [2020-10-23 19:54:46,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:54:46,945 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:46,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1090795297, now seen corresponding path program 1 times [2020-10-23 19:54:46,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:46,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036995726] [2020-10-23 19:54:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:46,949 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,719 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:47,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:54:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:54:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:47,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036995726] [2020-10-23 19:54:47,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:47,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:54:47,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275065386] [2020-10-23 19:54:47,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:54:47,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:47,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:54:47,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:54:47,985 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand 10 states. [2020-10-23 19:54:49,133 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:50,035 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:50,826 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:51,529 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:52,226 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:52,897 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:56,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:56,252 INFO L93 Difference]: Finished difference Result 520 states and 596 transitions. [2020-10-23 19:54:56,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:54:56,253 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-23 19:54:56,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:56,258 INFO L225 Difference]: With dead ends: 520 [2020-10-23 19:54:56,258 INFO L226 Difference]: Without dead ends: 345 [2020-10-23 19:54:56,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:54:56,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-23 19:54:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 295. [2020-10-23 19:54:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-23 19:54:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 321 transitions. [2020-10-23 19:54:56,393 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 321 transitions. Word has length 164 [2020-10-23 19:54:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:56,394 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 321 transitions. [2020-10-23 19:54:56,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:54:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 321 transitions. [2020-10-23 19:54:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-23 19:54:56,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:56,397 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] [2020-10-23 19:54:56,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:54:56,398 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:56,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:56,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1401390881, now seen corresponding path program 1 times [2020-10-23 19:54:56,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:56,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979641987] [2020-10-23 19:54:56,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:56,402 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,090 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:54:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 19:54:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 19:54:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:57,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979641987] [2020-10-23 19:54:57,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:57,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:54:57,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371639285] [2020-10-23 19:54:57,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:54:57,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:54:57,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:54:57,260 INFO L87 Difference]: Start difference. First operand 295 states and 321 transitions. Second operand 7 states. [2020-10-23 19:54:58,352 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:01,223 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:03,274 INFO L93 Difference]: Finished difference Result 675 states and 780 transitions. [2020-10-23 19:55:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:55:03,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-23 19:55:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:03,281 INFO L225 Difference]: With dead ends: 675 [2020-10-23 19:55:03,281 INFO L226 Difference]: Without dead ends: 500 [2020-10-23 19:55:03,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:55:03,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-23 19:55:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 427. [2020-10-23 19:55:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-23 19:55:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 462 transitions. [2020-10-23 19:55:03,469 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 462 transitions. Word has length 182 [2020-10-23 19:55:03,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:03,470 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 462 transitions. [2020-10-23 19:55:03,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:55:03,470 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 462 transitions. [2020-10-23 19:55:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:55:03,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:03,473 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, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:03,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:55:03,474 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:03,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:03,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1314811429, now seen corresponding path program 1 times [2020-10-23 19:55:03,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:03,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241301221] [2020-10-23 19:55:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:03,478 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,188 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:04,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:55:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:55:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:55:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:04,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241301221] [2020-10-23 19:55:04,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:04,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:55:04,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227557588] [2020-10-23 19:55:04,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:55:04,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:04,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:55:04,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:55:04,508 INFO L87 Difference]: Start difference. First operand 427 states and 462 transitions. Second operand 13 states. [2020-10-23 19:55:05,714 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:06,438 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:55:07,152 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:07,896 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:08,610 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:10,398 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:11,088 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:11,797 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:12,517 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:13,189 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:16,157 INFO L93 Difference]: Finished difference Result 810 states and 925 transitions. [2020-10-23 19:55:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:55:16,159 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2020-10-23 19:55:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:16,163 INFO L225 Difference]: With dead ends: 810 [2020-10-23 19:55:16,165 INFO L226 Difference]: Without dead ends: 503 [2020-10-23 19:55:16,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:55:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-10-23 19:55:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 433. [2020-10-23 19:55:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-23 19:55:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 468 transitions. [2020-10-23 19:55:16,405 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 468 transitions. Word has length 206 [2020-10-23 19:55:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:16,405 INFO L481 AbstractCegarLoop]: Abstraction has 433 states and 468 transitions. [2020-10-23 19:55:16,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:55:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 468 transitions. [2020-10-23 19:55:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:55:16,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:16,409 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, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:16,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:55:16,410 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:16,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1377140165, now seen corresponding path program 1 times [2020-10-23 19:55:16,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:16,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462250829] [2020-10-23 19:55:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:16,415 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,183 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:55:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:55:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:55:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:17,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462250829] [2020-10-23 19:55:17,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:17,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:55:17,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018856358] [2020-10-23 19:55:17,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:55:17,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:17,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:55:17,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:55:17,417 INFO L87 Difference]: Start difference. First operand 433 states and 468 transitions. Second operand 10 states. [2020-10-23 19:55:18,472 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:21,051 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:21,815 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:22,665 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:23,402 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:24,952 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:25,695 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:26,407 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:27,230 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:29,747 INFO L93 Difference]: Finished difference Result 1122 states and 1292 transitions. [2020-10-23 19:55:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:55:29,749 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-10-23 19:55:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:29,754 INFO L225 Difference]: With dead ends: 1122 [2020-10-23 19:55:29,754 INFO L226 Difference]: Without dead ends: 809 [2020-10-23 19:55:29,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:55:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-23 19:55:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 699. [2020-10-23 19:55:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-10-23 19:55:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 761 transitions. [2020-10-23 19:55:30,071 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 761 transitions. Word has length 206 [2020-10-23 19:55:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:30,072 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 761 transitions. [2020-10-23 19:55:30,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:55:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 761 transitions. [2020-10-23 19:55:30,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 19:55:30,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:30,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:30,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:55:30,077 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:30,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:30,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1326710727, now seen corresponding path program 1 times [2020-10-23 19:55:30,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:30,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232541222] [2020-10-23 19:55:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:30,081 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,787 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:55:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:55:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:30,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:55:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:31,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232541222] [2020-10-23 19:55:31,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:31,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:55:31,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61590357] [2020-10-23 19:55:31,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:55:31,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:31,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:55:31,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:55:31,038 INFO L87 Difference]: Start difference. First operand 699 states and 761 transitions. Second operand 11 states. [2020-10-23 19:55:32,114 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:35,243 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:35,977 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:36,777 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:39,315 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:40,011 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:40,797 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:41,509 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:42,222 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:42,884 INFO L93 Difference]: Finished difference Result 1449 states and 1654 transitions. [2020-10-23 19:55:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 19:55:42,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 211 [2020-10-23 19:55:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:42,891 INFO L225 Difference]: With dead ends: 1449 [2020-10-23 19:55:42,892 INFO L226 Difference]: Without dead ends: 870 [2020-10-23 19:55:42,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-10-23 19:55:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-23 19:55:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 697. [2020-10-23 19:55:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-23 19:55:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 757 transitions. [2020-10-23 19:55:43,271 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 757 transitions. Word has length 211 [2020-10-23 19:55:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:43,271 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 757 transitions. [2020-10-23 19:55:43,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:55:43,272 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 757 transitions. [2020-10-23 19:55:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-23 19:55:43,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:43,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:43,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:55:43,277 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:43,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:43,278 INFO L82 PathProgramCache]: Analyzing trace with hash -205500570, now seen corresponding path program 1 times [2020-10-23 19:55:43,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:43,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934947374] [2020-10-23 19:55:43,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:43,282 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,009 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:44,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:55:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:55:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:55:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:55:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 19:55:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 19:55:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:44,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934947374] [2020-10-23 19:55:44,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:44,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:55:44,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877792561] [2020-10-23 19:55:44,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:55:44,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:44,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:55:44,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:55:44,310 INFO L87 Difference]: Start difference. First operand 697 states and 757 transitions. Second operand 11 states. [2020-10-23 19:55:46,733 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:47,460 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:55:48,204 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:55:48,914 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:49,628 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:50,260 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:53,441 INFO L93 Difference]: Finished difference Result 1461 states and 1692 transitions. [2020-10-23 19:55:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:55:53,442 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 234 [2020-10-23 19:55:53,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:53,447 INFO L225 Difference]: With dead ends: 1461 [2020-10-23 19:55:53,448 INFO L226 Difference]: Without dead ends: 884 [2020-10-23 19:55:53,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:55:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-10-23 19:55:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 713. [2020-10-23 19:55:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-23 19:55:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 773 transitions. [2020-10-23 19:55:53,790 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 773 transitions. Word has length 234 [2020-10-23 19:55:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:53,790 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 773 transitions. [2020-10-23 19:55:53,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:55:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 773 transitions. [2020-10-23 19:55:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-23 19:55:53,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:53,794 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:53,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:55:53,794 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash 12220137, now seen corresponding path program 1 times [2020-10-23 19:55:53,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:53,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752714881] [2020-10-23 19:55:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:53,798 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,503 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:55:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:55:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:55:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:55:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-23 19:55:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-23 19:55:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:54,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752714881] [2020-10-23 19:55:54,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:54,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:55:54,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216194981] [2020-10-23 19:55:54,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:55:54,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:55:54,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:55:54,772 INFO L87 Difference]: Start difference. First operand 713 states and 773 transitions. Second operand 8 states. [2020-10-23 19:55:55,892 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:57,169 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:02,747 INFO L93 Difference]: Finished difference Result 1973 states and 2344 transitions. [2020-10-23 19:56:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:56:02,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 234 [2020-10-23 19:56:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:02,757 INFO L225 Difference]: With dead ends: 1973 [2020-10-23 19:56:02,757 INFO L226 Difference]: Without dead ends: 1380 [2020-10-23 19:56:02,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:56:02,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-23 19:56:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1147. [2020-10-23 19:56:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-10-23 19:56:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1279 transitions. [2020-10-23 19:56:03,307 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1279 transitions. Word has length 234 [2020-10-23 19:56:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:03,308 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1279 transitions. [2020-10-23 19:56:03,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:56:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1279 transitions. [2020-10-23 19:56:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-23 19:56:03,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:03,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:56:03,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:56:03,312 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:56:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1107158727, now seen corresponding path program 1 times [2020-10-23 19:56:03,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:03,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320814047] [2020-10-23 19:56:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:03,317 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,971 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:56:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:56:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:56:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:56:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:56:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:56:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:56:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:56:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:56:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:56:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:56:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:56:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 19:56:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-23 19:56:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-23 19:56:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:56:04,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320814047] [2020-10-23 19:56:04,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:04,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-23 19:56:04,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127226366] [2020-10-23 19:56:04,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-23 19:56:04,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:04,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-23 19:56:04,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:56:04,926 INFO L87 Difference]: Start difference. First operand 1147 states and 1279 transitions. Second operand 21 states. [2020-10-23 19:56:06,126 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:07,077 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:56:07,805 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-23 19:56:08,529 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:09,266 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:56:09,976 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:11,838 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:14,497 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:15,318 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:56:16,170 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:16,986 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:17,750 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:56:18,510 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:56:19,226 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:20,055 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:56:20,807 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:21,670 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:56:22,410 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:56:23,251 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:56:24,764 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2020-10-23 19:56:26,455 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 221 DAG size of output: 211 [2020-10-23 19:56:27,865 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 216 DAG size of output: 209 [2020-10-23 19:56:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:34,523 INFO L93 Difference]: Finished difference Result 2360 states and 2726 transitions. [2020-10-23 19:56:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-23 19:56:34,524 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 239 [2020-10-23 19:56:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:34,532 INFO L225 Difference]: With dead ends: 2360 [2020-10-23 19:56:34,533 INFO L226 Difference]: Without dead ends: 1333 [2020-10-23 19:56:34,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=824, Invalid=3598, Unknown=0, NotChecked=0, Total=4422 [2020-10-23 19:56:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-10-23 19:56:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1112. [2020-10-23 19:56:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2020-10-23 19:56:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1230 transitions. [2020-10-23 19:56:35,069 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1230 transitions. Word has length 239 [2020-10-23 19:56:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:35,070 INFO L481 AbstractCegarLoop]: Abstraction has 1112 states and 1230 transitions. [2020-10-23 19:56:35,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-23 19:56:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1230 transitions. [2020-10-23 19:56:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-23 19:56:35,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:35,075 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:56:35,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:56:35,076 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:56:35,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash -467491748, now seen corresponding path program 1 times [2020-10-23 19:56:35,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:35,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717663001] [2020-10-23 19:56:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:35,108 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:56:35,115 INFO L168 Benchmark]: Toolchain (without parser) took 120455.28 ms. Allocated memory was 151.0 MB in the beginning and 544.2 MB in the end (delta: 393.2 MB). Free memory was 127.0 MB in the beginning and 277.3 MB in the end (delta: -150.4 MB). Peak memory consumption was 243.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:35,116 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 120.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:56:35,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.50 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 104.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:35,117 INFO L168 Benchmark]: Boogie Preprocessor took 164.83 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 132.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:35,117 INFO L168 Benchmark]: RCFGBuilder took 1960.70 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 84.0 MB in the end (delta: 48.6 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:35,118 INFO L168 Benchmark]: TraceAbstraction took 117675.63 ms. Allocated memory was 151.0 MB in the beginning and 544.2 MB in the end (delta: 393.2 MB). Free memory was 83.5 MB in the beginning and 277.3 MB in the end (delta: -193.8 MB). Peak memory consumption was 199.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:35,121 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 120.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 641.50 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 104.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 164.83 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 132.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1960.70 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 84.0 MB in the end (delta: 48.6 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 117675.63 ms. Allocated memory was 151.0 MB in the beginning and 544.2 MB in the end (delta: 393.2 MB). Free memory was 83.5 MB in the beginning and 277.3 MB in the end (delta: -193.8 MB). Peak memory consumption was 199.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...