/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_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:41:57,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:41:57,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:41:57,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:41:57,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:41:57,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:41:57,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:41:57,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:41:57,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:41:57,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:41:57,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:41:57,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:41:57,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:41:57,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:41:57,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:41:57,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:41:57,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:41:57,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:41:57,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:41:57,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:41:57,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:41:57,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:41:57,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:41:57,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:41:57,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:41:57,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:41:57,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:41:57,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:41:57,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:41:57,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:41:57,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:41:57,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:41:57,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:41:57,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:41:57,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:41:57,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:41:57,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:41:57,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:41:57,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:41:57,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:41:57,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:41:57,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:41:57,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:41:57,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:41:57,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:41:57,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:41:57,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:41:57,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:41:57,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:41:57,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:41:57,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:41:57,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:41:57,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:41:57,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:41:57,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:41:57,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:41:57,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:41:57,875 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:41:57,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:41:57,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:41:57,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:41:57,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:41:57,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:41:57,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:41:57,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:41:58,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:41:58,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:41:58,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:41:58,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:41:58,327 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:41:58,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2021-02-21 18:41:58,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a2a0378/8f28d5faa93646c3862c54260ba8e90f/FLAG84b9a7d50 [2021-02-21 18:41:59,074 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:41:59,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2021-02-21 18:41:59,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a2a0378/8f28d5faa93646c3862c54260ba8e90f/FLAG84b9a7d50 [2021-02-21 18:41:59,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a2a0378/8f28d5faa93646c3862c54260ba8e90f [2021-02-21 18:41:59,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:41:59,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:41:59,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:41:59,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:41:59,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:41:59,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:41:59,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5b3da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59, skipping insertion in model container [2021-02-21 18:41:59,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:41:59,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:41:59,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:41:59,805 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_spec1_product34.cil.c[12260,12273] [2021-02-21 18:41:59,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:41:59,867 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:41:59,926 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_spec1_product34.cil.c[12260,12273] [2021-02-21 18:41:59,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:41:59,989 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:41:59,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59 WrapperNode [2021-02-21 18:41:59,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:41:59,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:41:59,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:41:59,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:42:00,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:42:00,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:42:00,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:42:00,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:42:00,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:42:00,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:42:00,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (1/1) ... [2021-02-21 18:42:00,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:42:00,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:42:00,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:42:00,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:42:00,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (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 [2021-02-21 18:42:00,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:42:00,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:42:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:42:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:42:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:42:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:42:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:42:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:42:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:42:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:42:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:42:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:42:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:42:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:42:00,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:42:00,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:42:00,285 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:42:00,285 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:42:00,286 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:42:00,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:42:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:42:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:42:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:42:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:42:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:42:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:42:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:42:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:42:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:42:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:42:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:42:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:42:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:42:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:42:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:42:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:42:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:42:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:42:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:42:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:42:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:42:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:42:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:42:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:42:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:42:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:42:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:42:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:42:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:42:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:42:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:42:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:42:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:42:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:42:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:42:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:42:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:42:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:42:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:42:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:42:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:42:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:42:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:42:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:42:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:42:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:42:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:42:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:42:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:42:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:42:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:42:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:42:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:42:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:42:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:42:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:42:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:42:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:42:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:42:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:42:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:42:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:42:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:42:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:42:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:42:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:42:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:42:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:42:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:42:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:42:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:42:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:42:01,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:42:01,561 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:42:01,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:42:01 BoogieIcfgContainer [2021-02-21 18:42:01,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:42:01,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:42:01,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:42:01,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:42:01,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:41:59" (1/3) ... [2021-02-21 18:42:01,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5e5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:42:01, skipping insertion in model container [2021-02-21 18:42:01,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:41:59" (2/3) ... [2021-02-21 18:42:01,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5e5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:42:01, skipping insertion in model container [2021-02-21 18:42:01,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:42:01" (3/3) ... [2021-02-21 18:42:01,575 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2021-02-21 18:42:01,582 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:42:01,588 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:42:01,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:42:01,647 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:42:01,647 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:42:01,647 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:42:01,647 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:42:01,648 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:42:01,649 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:42:01,649 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:42:01,649 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:42:01,682 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states. [2021-02-21 18:42:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 18:42:01,715 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:01,716 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] [2021-02-21 18:42:01,716 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:01,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2146237448, now seen corresponding path program 1 times [2021-02-21 18:42:01,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:01,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580159985] [2021-02-21 18:42:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:01,813 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:02,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,458 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:02,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:02,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:02,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:02,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:02,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:02,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:02,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:42:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:02,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:02,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:02,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580159985] [2021-02-21 18:42:02,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:02,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:42:02,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061930282] [2021-02-21 18:42:02,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:42:02,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:02,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:42:02,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:42:02,692 INFO L87 Difference]: Start difference. First operand 294 states. Second operand 3 states. [2021-02-21 18:42:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:04,220 INFO L93 Difference]: Finished difference Result 434 states and 517 transitions. [2021-02-21 18:42:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:42:04,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 18:42:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:04,239 INFO L225 Difference]: With dead ends: 434 [2021-02-21 18:42:04,239 INFO L226 Difference]: Without dead ends: 276 [2021-02-21 18:42:04,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:42:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-21 18:42:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 236. [2021-02-21 18:42:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-21 18:42:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 254 transitions. [2021-02-21 18:42:04,402 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 254 transitions. Word has length 147 [2021-02-21 18:42:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:04,403 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 254 transitions. [2021-02-21 18:42:04,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:42:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 254 transitions. [2021-02-21 18:42:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 18:42:04,408 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:04,408 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] [2021-02-21 18:42:04,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:42:04,409 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:04,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1240697898, now seen corresponding path program 1 times [2021-02-21 18:42:04,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:04,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949783305] [2021-02-21 18:42:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:04,415 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:04,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:04,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:04,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:04,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:04,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:04,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:04,885 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:04,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:04,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:04,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:04,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:04,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:04,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:04,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:04,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:04,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:04,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:05,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:05,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:42:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:05,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:05,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:42:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:05,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:05,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:05,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949783305] [2021-02-21 18:42:05,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:05,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:42:05,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001495533] [2021-02-21 18:42:05,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:42:05,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:05,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:42:05,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:42:05,046 INFO L87 Difference]: Start difference. First operand 236 states and 254 transitions. Second operand 4 states. [2021-02-21 18:42:05,800 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:06,644 INFO L93 Difference]: Finished difference Result 346 states and 387 transitions. [2021-02-21 18:42:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:42:06,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 18:42:06,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:06,650 INFO L225 Difference]: With dead ends: 346 [2021-02-21 18:42:06,650 INFO L226 Difference]: Without dead ends: 259 [2021-02-21 18:42:06,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:42:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-21 18:42:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 226. [2021-02-21 18:42:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-02-21 18:42:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 241 transitions. [2021-02-21 18:42:06,744 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 241 transitions. Word has length 148 [2021-02-21 18:42:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:06,745 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 241 transitions. [2021-02-21 18:42:06,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:42:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 241 transitions. [2021-02-21 18:42:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 18:42:06,748 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:06,748 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] [2021-02-21 18:42:06,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:42:06,748 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:06,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2018752551, now seen corresponding path program 1 times [2021-02-21 18:42:06,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:06,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892479878] [2021-02-21 18:42:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:06,754 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:06,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:06,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:06,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:06,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:06,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:06,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:06,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:06,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:06,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:06,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:06,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:06,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:07,237 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:07,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:07,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:07,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:07,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:07,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:07,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:07,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:07,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:07,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:07,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:42:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:07,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:07,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:42:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:07,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:42:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:07,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:07,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:07,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892479878] [2021-02-21 18:42:07,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:07,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:42:07,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173563643] [2021-02-21 18:42:07,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:42:07,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:07,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:42:07,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:42:07,417 INFO L87 Difference]: Start difference. First operand 226 states and 241 transitions. Second operand 10 states. [2021-02-21 18:42:08,040 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:08,487 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:08,868 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:42:09,258 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:09,641 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:10,016 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:11,508 INFO L93 Difference]: Finished difference Result 392 states and 449 transitions. [2021-02-21 18:42:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:42:11,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 18:42:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:11,512 INFO L225 Difference]: With dead ends: 392 [2021-02-21 18:42:11,512 INFO L226 Difference]: Without dead ends: 281 [2021-02-21 18:42:11,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:42:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-21 18:42:11,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 226. [2021-02-21 18:42:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-02-21 18:42:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 240 transitions. [2021-02-21 18:42:11,584 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 240 transitions. Word has length 161 [2021-02-21 18:42:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:11,585 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 240 transitions. [2021-02-21 18:42:11,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:42:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 240 transitions. [2021-02-21 18:42:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-21 18:42:11,587 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:11,588 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] [2021-02-21 18:42:11,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:42:11,588 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:11,589 INFO L82 PathProgramCache]: Analyzing trace with hash 349736484, now seen corresponding path program 1 times [2021-02-21 18:42:11,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:11,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604121719] [2021-02-21 18:42:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:11,592 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:11,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:11,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:11,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:11,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:11,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:11,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:11,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:11,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:11,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:11,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:11,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:11,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:11,968 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:12,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:42:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:42:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:12,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:12,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:42:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 18:42:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:12,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:12,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:12,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604121719] [2021-02-21 18:42:12,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:12,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:42:12,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765176114] [2021-02-21 18:42:12,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:42:12,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:12,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:42:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:42:12,150 INFO L87 Difference]: Start difference. First operand 226 states and 240 transitions. Second operand 7 states. [2021-02-21 18:42:12,844 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:14,601 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:15,410 INFO L93 Difference]: Finished difference Result 563 states and 666 transitions. [2021-02-21 18:42:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 18:42:15,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2021-02-21 18:42:15,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:15,415 INFO L225 Difference]: With dead ends: 563 [2021-02-21 18:42:15,415 INFO L226 Difference]: Without dead ends: 452 [2021-02-21 18:42:15,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-02-21 18:42:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-02-21 18:42:15,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 325. [2021-02-21 18:42:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-21 18:42:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 349 transitions. [2021-02-21 18:42:15,609 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 349 transitions. Word has length 169 [2021-02-21 18:42:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:15,611 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 349 transitions. [2021-02-21 18:42:15,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:42:15,611 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 349 transitions. [2021-02-21 18:42:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-02-21 18:42:15,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:15,615 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] [2021-02-21 18:42:15,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:42:15,615 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:15,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1813492629, now seen corresponding path program 1 times [2021-02-21 18:42:15,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:15,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568015887] [2021-02-21 18:42:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:15,621 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:15,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:15,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:15,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:15,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:15,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:15,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:15,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:15,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,039 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:16,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:42:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:42:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-21 18:42:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:16,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-21 18:42:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:16,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:16,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:16,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568015887] [2021-02-21 18:42:16,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:16,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:42:16,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462811112] [2021-02-21 18:42:16,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:42:16,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:16,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:42:16,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:42:16,234 INFO L87 Difference]: Start difference. First operand 325 states and 349 transitions. Second operand 10 states. [2021-02-21 18:42:16,858 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:18,462 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:18,852 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:19,236 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:19,627 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:19,969 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:20,325 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:20,683 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:21,205 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:22,625 INFO L93 Difference]: Finished difference Result 934 states and 1136 transitions. [2021-02-21 18:42:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:42:22,626 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2021-02-21 18:42:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:22,635 INFO L225 Difference]: With dead ends: 934 [2021-02-21 18:42:22,635 INFO L226 Difference]: Without dead ends: 724 [2021-02-21 18:42:22,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:42:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-02-21 18:42:22,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 498. [2021-02-21 18:42:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2021-02-21 18:42:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 541 transitions. [2021-02-21 18:42:22,885 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 541 transitions. Word has length 193 [2021-02-21 18:42:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:22,886 INFO L480 AbstractCegarLoop]: Abstraction has 498 states and 541 transitions. [2021-02-21 18:42:22,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:42:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 541 transitions. [2021-02-21 18:42:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-21 18:42:22,889 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:22,889 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] [2021-02-21 18:42:22,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:42:22,890 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:22,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1745554174, now seen corresponding path program 1 times [2021-02-21 18:42:22,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:22,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616551147] [2021-02-21 18:42:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:22,894 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:22,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:22,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:22,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:22,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:22,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:22,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:22,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:22,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:22,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:22,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,288 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:42:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:42:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:23,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-21 18:42:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-21 18:42:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:23,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:23,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:23,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:23,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:23,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616551147] [2021-02-21 18:42:23,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:23,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:42:23,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001848552] [2021-02-21 18:42:23,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:42:23,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:23,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:42:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:42:23,573 INFO L87 Difference]: Start difference. First operand 498 states and 541 transitions. Second operand 11 states. [2021-02-21 18:42:24,262 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:26,021 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:26,393 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:26,788 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:27,153 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:27,544 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:27,945 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:42:28,324 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:28,736 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:30,386 INFO L93 Difference]: Finished difference Result 859 states and 1068 transitions. [2021-02-21 18:42:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 18:42:30,387 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 198 [2021-02-21 18:42:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:30,394 INFO L225 Difference]: With dead ends: 859 [2021-02-21 18:42:30,394 INFO L226 Difference]: Without dead ends: 856 [2021-02-21 18:42:30,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-02-21 18:42:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-02-21 18:42:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 498. [2021-02-21 18:42:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2021-02-21 18:42:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 540 transitions. [2021-02-21 18:42:30,660 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 540 transitions. Word has length 198 [2021-02-21 18:42:30,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:30,661 INFO L480 AbstractCegarLoop]: Abstraction has 498 states and 540 transitions. [2021-02-21 18:42:30,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:42:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 540 transitions. [2021-02-21 18:42:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-21 18:42:30,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:30,665 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] [2021-02-21 18:42:30,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:42:30,666 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:30,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1745880707, now seen corresponding path program 1 times [2021-02-21 18:42:30,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:30,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510328319] [2021-02-21 18:42:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:30,670 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:30,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:30,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:30,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,069 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:42:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:42:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:31,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:31,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:31,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:31,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:31,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-21 18:42:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:42:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:31,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:31,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:31,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510328319] [2021-02-21 18:42:31,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:31,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 18:42:31,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578801425] [2021-02-21 18:42:31,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 18:42:31,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 18:42:31,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:42:31,283 INFO L87 Difference]: Start difference. First operand 498 states and 540 transitions. Second operand 11 states. [2021-02-21 18:42:32,716 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:33,090 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:42:33,483 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:42:33,858 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:34,243 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:34,595 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:36,074 INFO L93 Difference]: Finished difference Result 1249 states and 1522 transitions. [2021-02-21 18:42:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:42:36,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2021-02-21 18:42:36,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:36,081 INFO L225 Difference]: With dead ends: 1249 [2021-02-21 18:42:36,081 INFO L226 Difference]: Without dead ends: 866 [2021-02-21 18:42:36,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-21 18:42:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-02-21 18:42:36,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 514. [2021-02-21 18:42:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2021-02-21 18:42:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 556 transitions. [2021-02-21 18:42:36,350 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 556 transitions. Word has length 199 [2021-02-21 18:42:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:36,351 INFO L480 AbstractCegarLoop]: Abstraction has 514 states and 556 transitions. [2021-02-21 18:42:36,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 18:42:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 556 transitions. [2021-02-21 18:42:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-21 18:42:36,356 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:36,356 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] [2021-02-21 18:42:36,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:42:36,357 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:36,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1126845725, now seen corresponding path program 1 times [2021-02-21 18:42:36,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:36,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297064652] [2021-02-21 18:42:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:36,361 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,760 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:36,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:36,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:42:36,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:42:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:42:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-21 18:42:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:42:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:36,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:36,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:36,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297064652] [2021-02-21 18:42:36,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:36,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 18:42:36,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501739454] [2021-02-21 18:42:36,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 18:42:36,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:36,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 18:42:36,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-21 18:42:36,992 INFO L87 Difference]: Start difference. First operand 514 states and 556 transitions. Second operand 14 states. [2021-02-21 18:42:37,714 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:42:38,085 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:42:38,461 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:38,825 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:39,172 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:40,181 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:40,545 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:40,922 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:41,303 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:42:41,647 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:42:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:43,532 INFO L93 Difference]: Finished difference Result 1287 states and 1583 transitions. [2021-02-21 18:42:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 18:42:43,533 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2021-02-21 18:42:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:43,539 INFO L225 Difference]: With dead ends: 1287 [2021-02-21 18:42:43,540 INFO L226 Difference]: Without dead ends: 888 [2021-02-21 18:42:43,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-21 18:42:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-02-21 18:42:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 526. [2021-02-21 18:42:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2021-02-21 18:42:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 568 transitions. [2021-02-21 18:42:43,807 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 568 transitions. Word has length 199 [2021-02-21 18:42:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:43,808 INFO L480 AbstractCegarLoop]: Abstraction has 526 states and 568 transitions. [2021-02-21 18:42:43,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 18:42:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 568 transitions. [2021-02-21 18:42:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-21 18:42:43,811 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:43,811 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] [2021-02-21 18:42:43,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:42:43,812 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:43,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1335194496, now seen corresponding path program 1 times [2021-02-21 18:42:43,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:43,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612538209] [2021-02-21 18:42:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:43,816 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:43,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:43,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:43,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:43,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:43,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:43,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:43,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:43,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:43,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:43,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:42:43,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:43,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,188 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:42:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:42:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:42:44,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:42:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:42:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:42:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:42:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:42:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 18:42:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:42:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:42:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:42:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:42:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:42:44,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:42:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-21 18:42:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:42:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:42:44,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:42:44,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:42:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:42:44,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612538209] [2021-02-21 18:42:44,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:42:44,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:42:44,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091403152] [2021-02-21 18:42:44,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:42:44,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:42:44,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:42:44,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:42:44,408 INFO L87 Difference]: Start difference. First operand 526 states and 568 transitions. Second operand 8 states. [2021-02-21 18:42:45,050 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:45,770 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:42:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:42:49,367 INFO L93 Difference]: Finished difference Result 1936 states and 2440 transitions. [2021-02-21 18:42:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-21 18:42:49,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2021-02-21 18:42:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:42:49,379 INFO L225 Difference]: With dead ends: 1936 [2021-02-21 18:42:49,379 INFO L226 Difference]: Without dead ends: 1525 [2021-02-21 18:42:49,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2021-02-21 18:42:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2021-02-21 18:42:49,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 948. [2021-02-21 18:42:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2021-02-21 18:42:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1056 transitions. [2021-02-21 18:42:49,780 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1056 transitions. Word has length 199 [2021-02-21 18:42:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:42:49,781 INFO L480 AbstractCegarLoop]: Abstraction has 948 states and 1056 transitions. [2021-02-21 18:42:49,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:42:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1056 transitions. [2021-02-21 18:42:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-21 18:42:49,785 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:42:49,785 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] [2021-02-21 18:42:49,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:42:49,785 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:42:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:42:49,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1808277229, now seen corresponding path program 1 times [2021-02-21 18:42:49,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:42:49,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484654329] [2021-02-21 18:42:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:42:49,789 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:42:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:42:49,857 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:42:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:42:49,921 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:42:50,154 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:42:50,154 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:42:50,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:42:50,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:42:50 BoogieIcfgContainer [2021-02-21 18:42:50,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:42:50,180 INFO L168 Benchmark]: Toolchain (without parser) took 50804.52 ms. Allocated memory was 169.9 MB in the beginning and 588.3 MB in the end (delta: 418.4 MB). Free memory was 152.5 MB in the beginning and 216.8 MB in the end (delta: -64.3 MB). Peak memory consumption was 353.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:42:50,181 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 169.9 MB. Free memory is still 143.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:42:50,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 595.16 ms. Allocated memory is still 169.9 MB. Free memory was 151.5 MB in the beginning and 131.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:42:50,181 INFO L168 Benchmark]: Boogie Preprocessor took 178.59 ms. Allocated memory is still 169.9 MB. Free memory was 131.2 MB in the beginning and 149.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:42:50,181 INFO L168 Benchmark]: RCFGBuilder took 1390.30 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 149.3 MB in the beginning and 126.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:42:50,181 INFO L168 Benchmark]: TraceAbstraction took 48611.81 ms. Allocated memory was 204.5 MB in the beginning and 588.3 MB in the end (delta: 383.8 MB). Free memory was 126.1 MB in the beginning and 216.8 MB in the end (delta: -90.8 MB). Peak memory consumption was 292.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:42:50,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 169.9 MB. Free memory is still 143.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 595.16 ms. Allocated memory is still 169.9 MB. Free memory was 151.5 MB in the beginning and 131.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 178.59 ms. Allocated memory is still 169.9 MB. Free memory was 131.2 MB in the beginning and 149.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1390.30 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 149.3 MB in the beginning and 126.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48611.81 ms. Allocated memory was 204.5 MB in the beginning and 588.3 MB in the end (delta: 383.8 MB). Free memory was 126.1 MB in the beginning and 216.8 MB in the end (delta: -90.8 MB). Peak memory consumption was 292.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 [L631] COND TRUE 1 [L633] COND TRUE splverifierCounter < 4 [L639] tmp = __VERIFIER_nondet_int() [L641] COND TRUE \read(tmp) [L643] CALL waterRise() [L544] COND TRUE waterLevel < 2 [L545] waterLevel = waterLevel + 1 [L643] RET waterRise() [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND TRUE \read(tmp___0) [L653] CALL changeMethaneLevel() [L556] COND FALSE !(\read(methaneLevelCritical)) [L559] methaneLevelCritical = 1 [L653] RET changeMethaneLevel() [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L663] CALL startSystem() [L847] systemActive = 1 [L663] RET startSystem() [L676] CALL timeShift() [L699] COND FALSE !(\read(pumpRunning)) [L706] COND TRUE \read(systemActive) [L708] CALL processEnvironment() [L728] int tmp ; [L731] COND TRUE ! pumpRunning [L733] CALL, EXPR isHighWaterLevel() [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L831] CALL, EXPR isHighWaterSensorDry() [L606] int retValue_acc ; [L609] COND FALSE !(waterLevel < 2) [L613] retValue_acc = 0 [L614] return (retValue_acc); [L831] RET, EXPR isHighWaterSensorDry() [L831] tmp = isHighWaterSensorDry() [L833] COND FALSE !(\read(tmp)) [L836] tmp___0 = 1 [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); [L733] RET, EXPR isHighWaterLevel() [L733] tmp = isHighWaterLevel() [L735] COND TRUE \read(tmp) [L737] CALL activatePump() [L756] pumpRunning = 1 [L737] RET activatePump() [L708] RET processEnvironment() [L714] CALL __utac_acc__Specification1_spec__1() [L853] int tmp ; [L854] int tmp___0 ; [L858] CALL, EXPR isMethaneLevelCritical() [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND TRUE \read(tmp) [L862] CALL, EXPR isPumpRunning() [L780] int retValue_acc ; [L783] retValue_acc = pumpRunning [L784] return (retValue_acc); [L862] RET, EXPR isPumpRunning() [L862] tmp___0 = isPumpRunning() [L864] COND TRUE \read(tmp___0) [L866] CALL __automaton_fail() [L516] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 619 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2028 SDtfs, 5150 SDslu, 4408 SDs, 0 SdLazy, 7931 SolverSat, 1459 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=948occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 2130 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...