/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_spec4_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:28:05,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:28:05,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:28:05,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:28:05,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:28:05,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:28:05,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:28:05,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:28:05,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:28:05,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:28:05,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:28:05,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:28:05,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:28:05,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:28:05,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:28:06,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:28:06,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:28:06,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:28:06,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:28:06,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:28:06,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:28:06,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:28:06,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:28:06,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:28:06,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:28:06,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:28:06,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:28:06,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:28:06,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:28:06,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:28:06,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:28:06,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:28:06,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:28:06,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:28:06,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:28:06,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:28:06,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:28:06,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:28:06,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:28:06,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:28:06,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:28:06,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:28:06,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:28:06,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:28:06,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:28:06,089 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:28:06,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:28:06,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:28:06,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:28:06,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:28:06,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:28:06,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:28:06,092 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:28:06,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:28:06,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:28:06,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:28:06,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:28:06,093 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:28:06,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:28:06,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:28:06,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:28:06,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:28:06,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:28:06,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:28:06,095 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:28:06,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:28:06,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:28:06,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:28:06,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:28:06,546 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:28:06,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c [2021-02-23 16:28:06,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a80ef3371/e8fa0fff782d43989c4c0d02d6af8ef8/FLAGb34b03e5a [2021-02-23 16:28:07,336 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:28:07,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c [2021-02-23 16:28:07,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a80ef3371/e8fa0fff782d43989c4c0d02d6af8ef8/FLAGb34b03e5a [2021-02-23 16:28:07,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a80ef3371/e8fa0fff782d43989c4c0d02d6af8ef8 [2021-02-23 16:28:07,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:28:07,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:28:07,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:28:07,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:28:07,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:28:07,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:28:07" (1/1) ... [2021-02-23 16:28:07,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9d8a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:07, skipping insertion in model container [2021-02-23 16:28:07,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:28:07" (1/1) ... [2021-02-23 16:28:07,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:28:07,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:28:08,017 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c[16864,16877] [2021-02-23 16:28:08,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:28:08,032 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:28:08,154 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c[16864,16877] [2021-02-23 16:28:08,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:28:08,192 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:28:08,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08 WrapperNode [2021-02-23 16:28:08,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:28:08,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:28:08,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:28:08,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:28:08,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (1/1) ... [2021-02-23 16:28:08,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (1/1) ... [2021-02-23 16:28:08,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (1/1) ... [2021-02-23 16:28:08,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (1/1) ... [2021-02-23 16:28:08,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (1/1) ... [2021-02-23 16:28:08,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (1/1) ... [2021-02-23 16:28:08,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (1/1) ... [2021-02-23 16:28:08,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:28:08,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:28:08,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:28:08,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:28:08,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:28:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:28:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:28:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:28:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:28:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:28:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:28:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:28:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:28:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:28:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:28:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:28:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:28:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:28:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:28:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:28:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:28:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:28:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:28:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:28:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:28:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:28:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:28:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:28:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:28:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:28:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:28:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:28:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:28:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:28:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:28:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:28:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:28:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:28:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:28:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:28:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:28:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:28:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:28:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:28:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:28:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:28:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:28:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:28:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:28:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:28:09,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:28:09,758 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:28:09,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:28:09 BoogieIcfgContainer [2021-02-23 16:28:09,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:28:09,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:28:09,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:28:09,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:28:09,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:28:07" (1/3) ... [2021-02-23 16:28:09,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cc6059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:28:09, skipping insertion in model container [2021-02-23 16:28:09,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:28:08" (2/3) ... [2021-02-23 16:28:09,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cc6059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:28:09, skipping insertion in model container [2021-02-23 16:28:09,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:28:09" (3/3) ... [2021-02-23 16:28:09,779 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product06.cil.c [2021-02-23 16:28:09,790 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:28:09,796 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:28:09,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:28:09,848 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:28:09,848 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:28:09,848 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:28:09,849 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:28:09,849 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:28:09,849 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:28:09,849 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:28:09,849 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:28:09,875 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states. [2021-02-23 16:28:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:28:09,896 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:09,897 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] [2021-02-23 16:28:09,898 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:09,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1128562642, now seen corresponding path program 1 times [2021-02-23 16:28:09,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:09,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776117842] [2021-02-23 16:28:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:10,001 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:10,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,666 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:10,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:10,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:10,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:10,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:10,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:10,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:28:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:10,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:28:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:10,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:10,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:28:10,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776117842] [2021-02-23 16:28:10,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:10,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:28:10,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601475968] [2021-02-23 16:28:10,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:28:10,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:10,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:28:10,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:28:10,970 INFO L87 Difference]: Start difference. First operand 279 states. Second operand 3 states. [2021-02-23 16:28:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:12,528 INFO L93 Difference]: Finished difference Result 416 states and 495 transitions. [2021-02-23 16:28:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:28:12,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:28:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:12,546 INFO L225 Difference]: With dead ends: 416 [2021-02-23 16:28:12,546 INFO L226 Difference]: Without dead ends: 267 [2021-02-23 16:28:12,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:28:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-02-23 16:28:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 227. [2021-02-23 16:28:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2021-02-23 16:28:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2021-02-23 16:28:12,721 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 147 [2021-02-23 16:28:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:12,722 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 243 transitions. [2021-02-23 16:28:12,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:28:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 243 transitions. [2021-02-23 16:28:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:28:12,727 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:12,728 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] [2021-02-23 16:28:12,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:28:12,728 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:12,729 INFO L82 PathProgramCache]: Analyzing trace with hash -204713246, now seen corresponding path program 1 times [2021-02-23 16:28:12,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:12,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357436866] [2021-02-23 16:28:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:12,735 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:12,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:12,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:12,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:12,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:13,129 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:13,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:13,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:13,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:13,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:13,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:13,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:13,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:13,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:13,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:13,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:13,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:13,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:13,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:13,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:28:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:13,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:13,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:13,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:28:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:13,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:13,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:28:13,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357436866] [2021-02-23 16:28:13,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:13,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:28:13,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066241086] [2021-02-23 16:28:13,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:28:13,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:13,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:28:13,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:28:13,292 INFO L87 Difference]: Start difference. First operand 227 states and 243 transitions. Second operand 4 states. [2021-02-23 16:28:13,942 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:28:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:14,620 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2021-02-23 16:28:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:28:14,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:28:14,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:14,632 INFO L225 Difference]: With dead ends: 328 [2021-02-23 16:28:14,632 INFO L226 Difference]: Without dead ends: 250 [2021-02-23 16:28:14,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:28:14,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-02-23 16:28:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 217. [2021-02-23 16:28:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-23 16:28:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 230 transitions. [2021-02-23 16:28:14,770 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 230 transitions. Word has length 148 [2021-02-23 16:28:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:14,772 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 230 transitions. [2021-02-23 16:28:14,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:28:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 230 transitions. [2021-02-23 16:28:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:28:14,779 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:14,779 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] [2021-02-23 16:28:14,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:28:14,780 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:14,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:14,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1875333793, now seen corresponding path program 1 times [2021-02-23 16:28:14,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:14,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789230963] [2021-02-23 16:28:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:14,785 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:14,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:14,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:14,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:14,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:14,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:14,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:14,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:15,200 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:15,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:15,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:15,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:15,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:15,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:15,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:28:15,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:28:15,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:15,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:28:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:15,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:28:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:15,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:28:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:15,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:15,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:28:15,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789230963] [2021-02-23 16:28:15,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:15,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:28:15,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757065537] [2021-02-23 16:28:15,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:28:15,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:15,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:28:15,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:28:15,373 INFO L87 Difference]: Start difference. First operand 217 states and 230 transitions. Second operand 10 states. [2021-02-23 16:28:16,016 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:16,353 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:16,606 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:28:16,896 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:17,134 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:17,413 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:18,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:18,623 INFO L93 Difference]: Finished difference Result 374 states and 427 transitions. [2021-02-23 16:28:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:28:18,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:28:18,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:18,626 INFO L225 Difference]: With dead ends: 374 [2021-02-23 16:28:18,626 INFO L226 Difference]: Without dead ends: 272 [2021-02-23 16:28:18,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:28:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-02-23 16:28:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 217. [2021-02-23 16:28:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-23 16:28:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 229 transitions. [2021-02-23 16:28:18,706 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 229 transitions. Word has length 161 [2021-02-23 16:28:18,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:18,707 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 229 transitions. [2021-02-23 16:28:18,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:28:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 229 transitions. [2021-02-23 16:28:18,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-23 16:28:18,709 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:18,709 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] [2021-02-23 16:28:18,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:28:18,710 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:18,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:18,710 INFO L82 PathProgramCache]: Analyzing trace with hash 205026164, now seen corresponding path program 1 times [2021-02-23 16:28:18,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:18,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061821987] [2021-02-23 16:28:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:18,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:18,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:18,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:18,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:18,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:18,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:18,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:18,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:18,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:18,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:18,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:28:18,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:18,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,112 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:19,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:28:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:28:19,257 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:28:19,259 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:28:19,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:28:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:28:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:28:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:28:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:19,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:28:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:19,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:19,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:28:19,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061821987] [2021-02-23 16:28:19,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:19,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 16:28:19,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78590951] [2021-02-23 16:28:19,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 16:28:19,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:19,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 16:28:19,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:28:19,453 INFO L87 Difference]: Start difference. First operand 217 states and 229 transitions. Second operand 15 states. [2021-02-23 16:28:20,053 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:20,416 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:20,697 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:21,022 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:21,327 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:21,611 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:22,305 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:28:23,389 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:23,729 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:24,137 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:24,488 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:28:24,786 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:25,100 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:28:25,429 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:28:25,725 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:26,017 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:26,359 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:26,801 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:28:27,131 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:28:27,480 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:28:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:28,819 INFO L93 Difference]: Finished difference Result 738 states and 934 transitions. [2021-02-23 16:28:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 16:28:28,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2021-02-23 16:28:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:28,831 INFO L225 Difference]: With dead ends: 738 [2021-02-23 16:28:28,832 INFO L226 Difference]: Without dead ends: 636 [2021-02-23 16:28:28,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 16:28:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-02-23 16:28:29,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 397. [2021-02-23 16:28:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2021-02-23 16:28:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 435 transitions. [2021-02-23 16:28:29,049 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 435 transitions. Word has length 169 [2021-02-23 16:28:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:29,049 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 435 transitions. [2021-02-23 16:28:29,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 16:28:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 435 transitions. [2021-02-23 16:28:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-23 16:28:29,055 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:29,055 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] [2021-02-23 16:28:29,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:28:29,055 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:29,056 INFO L82 PathProgramCache]: Analyzing trace with hash 476107734, now seen corresponding path program 1 times [2021-02-23 16:28:29,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:29,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64117147] [2021-02-23 16:28:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:29,059 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:28:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:29,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:29,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:29,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:29,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:29,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,358 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:28:29,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:28:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:28:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:28:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:28:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:28:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:28:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:28:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:28:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:28:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:28:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:28:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:28:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-23 16:28:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:28:29,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:29,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:28:29,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64117147] [2021-02-23 16:28:29,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:28:29,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:28:29,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291036251] [2021-02-23 16:28:29,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:28:29,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:28:29,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:28:29,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:28:29,569 INFO L87 Difference]: Start difference. First operand 397 states and 435 transitions. Second operand 7 states. [2021-02-23 16:28:30,108 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:28:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:28:30,835 INFO L93 Difference]: Finished difference Result 677 states and 788 transitions. [2021-02-23 16:28:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:28:30,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2021-02-23 16:28:30,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:28:30,840 INFO L225 Difference]: With dead ends: 677 [2021-02-23 16:28:30,840 INFO L226 Difference]: Without dead ends: 395 [2021-02-23 16:28:30,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:28:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-23 16:28:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 308. [2021-02-23 16:28:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-02-23 16:28:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 325 transitions. [2021-02-23 16:28:30,963 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 325 transitions. Word has length 179 [2021-02-23 16:28:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:28:30,963 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 325 transitions. [2021-02-23 16:28:30,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:28:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 325 transitions. [2021-02-23 16:28:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-02-23 16:28:30,967 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:28:30,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:28:30,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:28:30,968 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:28:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:28:30,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1959899651, now seen corresponding path program 1 times [2021-02-23 16:28:30,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:28:30,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780550767] [2021-02-23 16:28:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:28:31,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:31,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:28:31,465 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 107 [2021-02-23 16:28:31,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:31,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-02-23 16:28:31,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:28:31,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1