/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_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:45:31,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:45:31,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:45:31,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:45:31,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:45:31,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:45:31,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:45:31,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:45:31,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:45:31,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:45:31,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:45:31,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:45:31,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:45:31,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:45:31,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:45:31,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:45:31,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:45:31,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:45:31,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:45:31,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:45:31,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:45:31,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:45:31,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:45:31,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:45:31,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:45:31,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:45:31,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:45:31,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:45:31,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:45:31,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:45:31,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:45:31,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:45:31,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:45:31,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:45:31,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:45:31,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:45:31,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:45:31,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:45:31,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:45:31,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:45:31,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:45:31,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:45:31,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:45:31,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:45:31,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:45:31,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:45:31,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:45:31,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:45:31,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:45:31,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:45:31,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:45:31,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:45:31,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:45:31,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:45:31,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:45:31,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:45:31,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:45:31,856 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:45:31,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:45:31,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:45:31,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:45:31,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:45:31,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:45:31,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:45:31,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:45:32,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:45:32,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:45:32,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:45:32,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:45:32,336 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:45:32,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-11-06 23:45:32,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b728b64/bf70f202b19d4935a7282380ec67316a/FLAG755631ca6 [2020-11-06 23:45:33,050 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:45:33,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-11-06 23:45:33,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b728b64/bf70f202b19d4935a7282380ec67316a/FLAG755631ca6 [2020-11-06 23:45:33,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b728b64/bf70f202b19d4935a7282380ec67316a [2020-11-06 23:45:33,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:45:33,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:45:33,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:45:33,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:45:33,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:45:33,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:33,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fe0dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33, skipping insertion in model container [2020-11-06 23:45:33,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:33,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:45:33,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:45:33,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:45:33,776 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:45:33,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:45:33,992 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:45:33,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33 WrapperNode [2020-11-06 23:45:33,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:45:33,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:45:33,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:45:33,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:45:34,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:34,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:34,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:34,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:34,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:34,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:34,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (1/1) ... [2020-11-06 23:45:34,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:45:34,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:45:34,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:45:34,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:45:34,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (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 [2020-11-06 23:45:34,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:45:34,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:45:34,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:45:34,307 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:45:34,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:45:34,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:45:34,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:45:34,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:45:34,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:45:34,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:45:34,308 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:45:34,308 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:45:34,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:45:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:45:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:45:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:45:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:45:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:45:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:45:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:45:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:45:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:45:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:45:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:45:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:45:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:45:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:45:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:45:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:45:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:45:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:45:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:45:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:45:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:45:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:45:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:45:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:45:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:45:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:45:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:45:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:45:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:45:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:45:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:45:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:45:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:45:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:45:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:45:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:45:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:45:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:45:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:45:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:45:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:45:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:45:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:45:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:45:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:45:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:45:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:45:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:45:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:45:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:45:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:45:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:45:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:45:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:45:34,318 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:45:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:45:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:45:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:45:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:45:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:45:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:45:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:45:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:45:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:45:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:45:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:45:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:45:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:45:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:45:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:45:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:45:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:45:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:45:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:45:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:45:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:45:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:45:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:45:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:45:35,931 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:45:35,931 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:45:35,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:45:35 BoogieIcfgContainer [2020-11-06 23:45:35,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:45:35,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:45:35,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:45:35,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:45:35,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:45:33" (1/3) ... [2020-11-06 23:45:35,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68125d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:45:35, skipping insertion in model container [2020-11-06 23:45:35,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:45:33" (2/3) ... [2020-11-06 23:45:35,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68125d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:45:35, skipping insertion in model container [2020-11-06 23:45:35,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:45:35" (3/3) ... [2020-11-06 23:45:35,944 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-11-06 23:45:35,959 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:45:35,964 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:45:35,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:45:35,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:45:35,999 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:45:36,000 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:45:36,000 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:45:36,000 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:45:36,000 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:45:36,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:45:36,000 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:45:36,023 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-11-06 23:45:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:45:36,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:36,045 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] [2020-11-06 23:45:36,045 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]=== [2020-11-06 23:45:36,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:36,052 INFO L82 PathProgramCache]: Analyzing trace with hash -66250541, now seen corresponding path program 1 times [2020-11-06 23:45:36,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:36,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676039575] [2020-11-06 23:45:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:36,140 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:37,222 WARN L194 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:37,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:37,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:45:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:37,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676039575] [2020-11-06 23:45:37,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:37,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:45:37,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126119153] [2020-11-06 23:45:37,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:45:37,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:37,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:45:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:45:37,476 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2020-11-06 23:45:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:40,036 INFO L93 Difference]: Finished difference Result 477 states and 569 transitions. [2020-11-06 23:45:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:45:40,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:45:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:40,055 INFO L225 Difference]: With dead ends: 477 [2020-11-06 23:45:40,055 INFO L226 Difference]: Without dead ends: 297 [2020-11-06 23:45:40,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:45:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-11-06 23:45:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 256. [2020-11-06 23:45:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-11-06 23:45:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 278 transitions. [2020-11-06 23:45:40,205 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 278 transitions. Word has length 148 [2020-11-06 23:45:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:40,206 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 278 transitions. [2020-11-06 23:45:40,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:45:40,207 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 278 transitions. [2020-11-06 23:45:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:45:40,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:40,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:40,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:45:40,212 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]=== [2020-11-06 23:45:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:40,213 INFO L82 PathProgramCache]: Analyzing trace with hash -479543084, now seen corresponding path program 1 times [2020-11-06 23:45:40,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:40,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965818606] [2020-11-06 23:45:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:40,218 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:41,048 WARN L194 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:41,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:41,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:41,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:45:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:41,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:45:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:41,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965818606] [2020-11-06 23:45:41,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:41,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:45:41,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827298643] [2020-11-06 23:45:41,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:45:41,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:41,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:45:41,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:45:41,134 INFO L87 Difference]: Start difference. First operand 256 states and 278 transitions. Second operand 4 states. [2020-11-06 23:45:42,520 WARN L194 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:44,289 INFO L93 Difference]: Finished difference Result 391 states and 440 transitions. [2020-11-06 23:45:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:45:44,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:45:44,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:44,296 INFO L225 Difference]: With dead ends: 391 [2020-11-06 23:45:44,296 INFO L226 Difference]: Without dead ends: 280 [2020-11-06 23:45:44,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:45:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-11-06 23:45:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 246. [2020-11-06 23:45:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-11-06 23:45:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 265 transitions. [2020-11-06 23:45:44,399 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 265 transitions. Word has length 149 [2020-11-06 23:45:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:44,400 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 265 transitions. [2020-11-06 23:45:44,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:45:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 265 transitions. [2020-11-06 23:45:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-11-06 23:45:44,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:44,403 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] [2020-11-06 23:45:44,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:45:44,404 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]=== [2020-11-06 23:45:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash -695224173, now seen corresponding path program 1 times [2020-11-06 23:45:44,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:44,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514703312] [2020-11-06 23:45:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:44,409 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:45,244 WARN L194 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:45,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:45,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:45,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:45,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:45:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-06 23:45:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:45,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514703312] [2020-11-06 23:45:45,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:45,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:45:45,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176728732] [2020-11-06 23:45:45,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:45:45,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:45,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:45:45,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:45:45,507 INFO L87 Difference]: Start difference. First operand 246 states and 265 transitions. Second operand 9 states. [2020-11-06 23:45:46,667 WARN L194 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:47,563 WARN L194 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:48,369 WARN L194 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:49,156 WARN L194 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:49,929 WARN L194 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:50,683 WARN L194 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:53,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:53,357 INFO L93 Difference]: Finished difference Result 411 states and 465 transitions. [2020-11-06 23:45:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 23:45:53,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-11-06 23:45:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:53,362 INFO L225 Difference]: With dead ends: 411 [2020-11-06 23:45:53,362 INFO L226 Difference]: Without dead ends: 280 [2020-11-06 23:45:53,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-06 23:45:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-11-06 23:45:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 246. [2020-11-06 23:45:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-11-06 23:45:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 264 transitions. [2020-11-06 23:45:53,453 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 264 transitions. Word has length 158 [2020-11-06 23:45:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:53,454 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 264 transitions. [2020-11-06 23:45:53,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:45:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 264 transitions. [2020-11-06 23:45:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-06 23:45:53,457 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:53,458 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] [2020-11-06 23:45:53,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:45:53,458 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]=== [2020-11-06 23:45:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash -604121053, now seen corresponding path program 1 times [2020-11-06 23:45:53,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:53,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765966743] [2020-11-06 23:45:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:53,462 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,253 WARN L194 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:45:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-11-06 23:45:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-06 23:45:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:54,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765966743] [2020-11-06 23:45:54,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:54,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 23:45:54,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646030024] [2020-11-06 23:45:54,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 23:45:54,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:54,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 23:45:54,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-06 23:45:54,400 INFO L87 Difference]: Start difference. First operand 246 states and 264 transitions. Second operand 6 states. [2020-11-06 23:45:55,445 WARN L194 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:58,202 WARN L194 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:59,690 INFO L93 Difference]: Finished difference Result 544 states and 622 transitions. [2020-11-06 23:45:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 23:45:59,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-11-06 23:45:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:59,696 INFO L225 Difference]: With dead ends: 544 [2020-11-06 23:45:59,696 INFO L226 Difference]: Without dead ends: 413 [2020-11-06 23:45:59,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:45:59,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-11-06 23:45:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 352. [2020-11-06 23:45:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-11-06 23:45:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 379 transitions. [2020-11-06 23:45:59,840 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 379 transitions. Word has length 171 [2020-11-06 23:45:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:59,841 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 379 transitions. [2020-11-06 23:45:59,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 23:45:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 379 transitions. [2020-11-06 23:45:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-06 23:45:59,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:59,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:59,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:45:59,845 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]=== [2020-11-06 23:45:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:59,845 INFO L82 PathProgramCache]: Analyzing trace with hash -708516420, now seen corresponding path program 1 times [2020-11-06 23:45:59,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:59,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330276078] [2020-11-06 23:45:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:59,849 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,587 WARN L194 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:00,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:46:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-11-06 23:46:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:46:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:00,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330276078] [2020-11-06 23:46:00,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:00,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:46:00,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779605703] [2020-11-06 23:46:00,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:46:00,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:00,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:46:00,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:46:00,849 INFO L87 Difference]: Start difference. First operand 352 states and 379 transitions. Second operand 9 states. [2020-11-06 23:46:01,913 WARN L194 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:03,946 WARN L194 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:04,740 WARN L194 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:46:05,539 WARN L194 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:06,313 WARN L194 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:07,173 WARN L194 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:46:07,949 WARN L194 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:11,048 INFO L93 Difference]: Finished difference Result 843 states and 985 transitions. [2020-11-06 23:46:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 23:46:11,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-11-06 23:46:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:11,057 INFO L225 Difference]: With dead ends: 843 [2020-11-06 23:46:11,057 INFO L226 Difference]: Without dead ends: 606 [2020-11-06 23:46:11,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:46:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-11-06 23:46:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 528. [2020-11-06 23:46:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-11-06 23:46:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 582 transitions. [2020-11-06 23:46:11,279 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 582 transitions. Word has length 195 [2020-11-06 23:46:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:11,279 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 582 transitions. [2020-11-06 23:46:11,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:46:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 582 transitions. [2020-11-06 23:46:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-06 23:46:11,283 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:11,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:11,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:46:11,283 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]=== [2020-11-06 23:46:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:11,284 INFO L82 PathProgramCache]: Analyzing trace with hash 931777561, now seen corresponding path program 1 times [2020-11-06 23:46:11,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:11,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631065826] [2020-11-06 23:46:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:11,287 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,092 WARN L194 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:46:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-11-06 23:46:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:46:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:12,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631065826] [2020-11-06 23:46:12,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:12,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:46:12,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335092325] [2020-11-06 23:46:12,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:46:12,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:46:12,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:46:12,269 INFO L87 Difference]: Start difference. First operand 528 states and 582 transitions. Second operand 9 states. [2020-11-06 23:46:13,410 WARN L194 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:16,333 WARN L194 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:17,106 WARN L194 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:17,910 WARN L194 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:18,662 WARN L194 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:19,426 WARN L194 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:20,180 WARN L194 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:20,981 WARN L194 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:22,038 WARN L194 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:24,659 INFO L93 Difference]: Finished difference Result 1407 states and 1648 transitions. [2020-11-06 23:46:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:46:24,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-11-06 23:46:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:24,667 INFO L225 Difference]: With dead ends: 1407 [2020-11-06 23:46:24,667 INFO L226 Difference]: Without dead ends: 994 [2020-11-06 23:46:24,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:46:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2020-11-06 23:46:25,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 879. [2020-11-06 23:46:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-11-06 23:46:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 978 transitions. [2020-11-06 23:46:25,074 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 978 transitions. Word has length 195 [2020-11-06 23:46:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:25,075 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 978 transitions. [2020-11-06 23:46:25,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:46:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 978 transitions. [2020-11-06 23:46:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-06 23:46:25,080 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:25,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:25,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:46:25,080 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]=== [2020-11-06 23:46:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash -616231985, now seen corresponding path program 1 times [2020-11-06 23:46:25,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:25,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581651868] [2020-11-06 23:46:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:25,084 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:25,929 WARN L194 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:25,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:46:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:46:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:46:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:26,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581651868] [2020-11-06 23:46:26,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:26,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:46:26,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159075132] [2020-11-06 23:46:26,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:46:26,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:26,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:46:26,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:46:26,191 INFO L87 Difference]: Start difference. First operand 879 states and 978 transitions. Second operand 10 states. [2020-11-06 23:46:27,421 WARN L194 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:30,663 WARN L194 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:31,491 WARN L194 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:32,367 WARN L194 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:33,177 WARN L194 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:34,050 WARN L194 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:34,934 WARN L194 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:35,747 WARN L194 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:36,457 WARN L194 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:38,798 INFO L93 Difference]: Finished difference Result 1103 states and 1295 transitions. [2020-11-06 23:46:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:46:38,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-11-06 23:46:38,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:38,807 INFO L225 Difference]: With dead ends: 1103 [2020-11-06 23:46:38,808 INFO L226 Difference]: Without dead ends: 1099 [2020-11-06 23:46:38,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:46:38,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2020-11-06 23:46:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 879. [2020-11-06 23:46:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-11-06 23:46:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 976 transitions. [2020-11-06 23:46:39,204 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 976 transitions. Word has length 200 [2020-11-06 23:46:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:39,205 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 976 transitions. [2020-11-06 23:46:39,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:46:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 976 transitions. [2020-11-06 23:46:39,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-06 23:46:39,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:39,210 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] [2020-11-06 23:46:39,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:46:39,211 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]=== [2020-11-06 23:46:39,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:39,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1691615419, now seen corresponding path program 1 times [2020-11-06 23:46:39,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:39,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144648020] [2020-11-06 23:46:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:39,214 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,007 WARN L194 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:40,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:46:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-11-06 23:46:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-11-06 23:46:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:40,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144648020] [2020-11-06 23:46:40,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:40,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:46:40,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449382307] [2020-11-06 23:46:40,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:46:40,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:40,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:46:40,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:46:40,292 INFO L87 Difference]: Start difference. First operand 879 states and 976 transitions. Second operand 10 states. [2020-11-06 23:46:42,783 WARN L194 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:43,594 WARN L194 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:46:44,435 WARN L194 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:46:45,236 WARN L194 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:46,041 WARN L194 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:46,809 WARN L194 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:49,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:49,450 INFO L93 Difference]: Finished difference Result 1885 states and 2201 transitions. [2020-11-06 23:46:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:46:49,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-11-06 23:46:49,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:49,458 INFO L225 Difference]: With dead ends: 1885 [2020-11-06 23:46:49,458 INFO L226 Difference]: Without dead ends: 1121 [2020-11-06 23:46:49,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:46:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2020-11-06 23:46:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 911. [2020-11-06 23:46:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-11-06 23:46:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1008 transitions. [2020-11-06 23:46:49,797 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1008 transitions. Word has length 201 [2020-11-06 23:46:49,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:49,798 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1008 transitions. [2020-11-06 23:46:49,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:46:49,798 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1008 transitions. [2020-11-06 23:46:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-06 23:46:49,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:49,801 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] [2020-11-06 23:46:49,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:46:49,802 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]=== [2020-11-06 23:46:49,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:49,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1566411035, now seen corresponding path program 1 times [2020-11-06 23:46:49,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:49,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051002188] [2020-11-06 23:46:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:49,806 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,547 WARN L194 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:46:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-11-06 23:46:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-11-06 23:46:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:50,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051002188] [2020-11-06 23:46:50,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:50,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-06 23:46:50,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774060335] [2020-11-06 23:46:50,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 23:46:50,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:50,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 23:46:50,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-06 23:46:50,853 INFO L87 Difference]: Start difference. First operand 911 states and 1008 transitions. Second operand 13 states. [2020-11-06 23:46:52,252 WARN L194 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:53,088 WARN L194 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:46:53,936 WARN L194 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:54,736 WARN L194 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:55,498 WARN L194 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:57,222 WARN L194 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:58,000 WARN L194 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:58,810 WARN L194 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:59,650 WARN L194 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:00,455 WARN L194 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:03,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:03,356 INFO L93 Difference]: Finished difference Result 1697 states and 1963 transitions. [2020-11-06 23:47:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:47:03,356 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 201 [2020-11-06 23:47:03,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:03,362 INFO L225 Difference]: With dead ends: 1697 [2020-11-06 23:47:03,362 INFO L226 Difference]: Without dead ends: 901 [2020-11-06 23:47:03,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-11-06 23:47:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-11-06 23:47:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 757. [2020-11-06 23:47:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2020-11-06 23:47:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 816 transitions. [2020-11-06 23:47:03,778 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 816 transitions. Word has length 201 [2020-11-06 23:47:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:03,778 INFO L481 AbstractCegarLoop]: Abstraction has 757 states and 816 transitions. [2020-11-06 23:47:03,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 23:47:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 816 transitions. [2020-11-06 23:47:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-06 23:47:03,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:03,785 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] [2020-11-06 23:47:03,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:47:03,785 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]=== [2020-11-06 23:47:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:03,786 INFO L82 PathProgramCache]: Analyzing trace with hash -980658218, now seen corresponding path program 1 times [2020-11-06 23:47:03,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:03,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892691746] [2020-11-06 23:47:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:03,795 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:03,893 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:03,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:04,252 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:47:04,252 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:47:04,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 23:47:04,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:47:04 BoogieIcfgContainer [2020-11-06 23:47:04,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:47:04,281 INFO L168 Benchmark]: Toolchain (without parser) took 90906.38 ms. Allocated memory was 125.8 MB in the beginning and 488.6 MB in the end (delta: 362.8 MB). Free memory was 101.6 MB in the beginning and 341.2 MB in the end (delta: -239.6 MB). Peak memory consumption was 123.9 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:04,281 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 103.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:47:04,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.53 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 80.5 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:04,282 INFO L168 Benchmark]: Boogie Preprocessor took 166.94 ms. Allocated memory is still 125.8 MB. Free memory was 80.3 MB in the beginning and 76.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:04,283 INFO L168 Benchmark]: RCFGBuilder took 1774.34 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 76.5 MB in the beginning and 79.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:04,284 INFO L168 Benchmark]: TraceAbstraction took 88341.65 ms. Allocated memory was 156.2 MB in the beginning and 488.6 MB in the end (delta: 332.4 MB). Free memory was 79.0 MB in the beginning and 341.2 MB in the end (delta: -262.2 MB). Peak memory consumption was 70.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:04,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 103.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 607.53 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 80.5 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 166.94 ms. Allocated memory is still 125.8 MB. Free memory was 80.3 MB in the beginning and 76.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1774.34 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 76.5 MB in the beginning and 79.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 88341.65 ms. Allocated memory was 156.2 MB in the beginning and 488.6 MB in the end (delta: 332.4 MB). Free memory was 79.0 MB in the beginning and 341.2 MB in the end (delta: -262.2 MB). Peak memory consumption was 70.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L489] int retValue_acc ; [L490] int tmp ; [L494] FCALL select_helpers() [L495] FCALL select_features() [L496] CALL, EXPR valid_product() [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); [L496] RET, EXPR valid_product() [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) [L500] FCALL setup() [L501] CALL runTest() [L480] CALL test() [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 [L778] COND TRUE 1 [L780] COND TRUE splverifierCounter < 4 [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) [L790] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L790] RET waterRise() [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) [L800] CALL changeMethaneLevel() [L864] COND FALSE !(\read(methaneLevelCritical)) [L867] methaneLevelCritical = 1 [L800] RET changeMethaneLevel() [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) [L821] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND TRUE \read(systemActive) [L606] CALL processEnvironment() [L652] int tmp ; [L655] COND FALSE !(\read(pumpRunning)) [L670] CALL processEnvironment__wrappee__highWaterSensor() [L626] int tmp ; [L629] COND TRUE ! pumpRunning [L631] CALL, EXPR isHighWaterLevel() [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isHighWaterSensorDry() [L914] int retValue_acc ; [L917] COND FALSE !(waterLevel < 2) [L921] retValue_acc = 0 [L922] return (retValue_acc); [L755] RET, EXPR isHighWaterSensorDry() [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); [L631] RET, EXPR isHighWaterLevel() [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L635] CALL activatePump() [L680] pumpRunning = 1 [L635] RET activatePump() [L670] RET processEnvironment__wrappee__highWaterSensor() [L606] RET processEnvironment() [L612] CALL __utac_acc__Specification1_spec__1() [L516] int tmp ; [L517] int tmp___0 ; [L521] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L521] RET, EXPR isMethaneLevelCritical() [L521] tmp = isMethaneLevelCritical() [L523] COND TRUE \read(tmp) [L525] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); [L525] RET, EXPR isPumpRunning() [L525] tmp___0 = isPumpRunning() [L527] COND TRUE \read(tmp___0) [L529] CALL __automaton_fail() [L545] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product37.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 631 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 88.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 75.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2122 SDtfs, 3315 SDslu, 4329 SDs, 0 SdLazy, 8025 SolverSat, 964 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 45.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=911occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 937 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...