/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:42:01,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:42:01,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:42:01,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:42:01,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:42:01,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:42:01,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:42:01,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:42:01,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:42:01,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:42:01,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:42:01,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:42:01,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:42:01,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:42:01,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:42:01,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:42:01,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:42:01,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:42:01,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:42:01,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:42:01,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:42:01,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:42:01,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:42:01,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:42:01,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:42:01,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:42:01,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:42:01,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:42:01,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:42:01,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:42:01,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:42:01,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:42:01,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:42:01,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:42:01,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:42:01,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:42:01,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:42:01,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:42:01,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:42:01,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:42:01,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:42:01,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:42:01,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:42:01,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:42:01,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:42:01,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:42:01,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:42:01,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:42:01,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:42:01,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:42:01,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:42:01,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:42:01,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:42:01,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:42:01,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:42:01,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:42:01,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:42:01,686 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:42:01,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:42:01,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:42:01,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:42:01,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:42:01,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:42:01,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:42:01,688 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:42:02,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:42:02,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:42:02,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:42:02,312 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:42:02,315 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:42:02,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product19.cil.c [2021-02-23 16:42:02,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b04b3b2/30a6561fceca4786a51b063bea1ef05a/FLAG73600f190 [2021-02-23 16:42:03,387 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:42:03,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product19.cil.c [2021-02-23 16:42:03,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b04b3b2/30a6561fceca4786a51b063bea1ef05a/FLAG73600f190 [2021-02-23 16:42:03,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b04b3b2/30a6561fceca4786a51b063bea1ef05a [2021-02-23 16:42:03,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:42:03,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:42:03,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:42:03,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:42:03,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:42:03,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:42:03" (1/1) ... [2021-02-23 16:42:03,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dac1bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:03, skipping insertion in model container [2021-02-23 16:42:03,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:42:03" (1/1) ... [2021-02-23 16:42:03,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:42:03,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:42:04,110 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product19.cil.c[14510,14523] [2021-02-23 16:42:04,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:42:04,156 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:42:04,272 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product19.cil.c[14510,14523] [2021-02-23 16:42:04,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:42:04,396 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:42:04,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04 WrapperNode [2021-02-23 16:42:04,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:42:04,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:42:04,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:42:04,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:42:04,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (1/1) ... [2021-02-23 16:42:04,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (1/1) ... [2021-02-23 16:42:04,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (1/1) ... [2021-02-23 16:42:04,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (1/1) ... [2021-02-23 16:42:04,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (1/1) ... [2021-02-23 16:42:04,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (1/1) ... [2021-02-23 16:42:04,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (1/1) ... [2021-02-23 16:42:04,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:42:04,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:42:04,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:42:04,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:42:04,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:42:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:42:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:42:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:42:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:42:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:42:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:42:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:42:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:42:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:42:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:42:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:42:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:42:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:42:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:42:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:42:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:42:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:42:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:42:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:42:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:42:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:42:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:42:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:42:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:42:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:42:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:42:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:42:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:42:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:42:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:42:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:42:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:42:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:42:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:42:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:42:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:42:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:42:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:42:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:42:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:42:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:42:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:42:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:42:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:42:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:42:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:42:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:42:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:42:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:42:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:42:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:42:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:42:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:42:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:42:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:42:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:42:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:42:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:42:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:42:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:42:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:42:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:42:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:42:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:42:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:42:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:42:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:42:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:42:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:42:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:42:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:42:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:42:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:42:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:42:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:42:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:42:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:42:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:42:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:42:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:42:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:42:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:42:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:42:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:42:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:42:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:42:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:42:06,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:42:06,426 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:42:06,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:42:06 BoogieIcfgContainer [2021-02-23 16:42:06,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:42:06,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:42:06,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:42:06,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:42:06,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:42:03" (1/3) ... [2021-02-23 16:42:06,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6559f0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:42:06, skipping insertion in model container [2021-02-23 16:42:06,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:42:04" (2/3) ... [2021-02-23 16:42:06,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6559f0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:42:06, skipping insertion in model container [2021-02-23 16:42:06,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:42:06" (3/3) ... [2021-02-23 16:42:06,442 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product19.cil.c [2021-02-23 16:42:06,452 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:42:06,459 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:42:06,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:42:06,533 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:42:06,533 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:42:06,533 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:42:06,534 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:42:06,534 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:42:06,534 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:42:06,534 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:42:06,534 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:42:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states. [2021-02-23 16:42:06,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:42:06,579 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:06,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:42:06,581 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:06,588 INFO L82 PathProgramCache]: Analyzing trace with hash 266707895, now seen corresponding path program 1 times [2021-02-23 16:42:06,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:06,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308527215] [2021-02-23 16:42:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:06,693 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,492 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:42:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:42:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:07,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:07,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:07,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308527215] [2021-02-23 16:42:07,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:07,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:42:07,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485122674] [2021-02-23 16:42:07,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:42:07,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:07,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:42:07,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:42:07,811 INFO L87 Difference]: Start difference. First operand 287 states. Second operand 3 states. [2021-02-23 16:42:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:09,604 INFO L93 Difference]: Finished difference Result 433 states and 518 transitions. [2021-02-23 16:42:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:42:09,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:42:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:09,628 INFO L225 Difference]: With dead ends: 433 [2021-02-23 16:42:09,628 INFO L226 Difference]: Without dead ends: 276 [2021-02-23 16:42:09,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:42:09,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-23 16:42:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 235. [2021-02-23 16:42:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-23 16:42:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 254 transitions. [2021-02-23 16:42:09,829 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 254 transitions. Word has length 147 [2021-02-23 16:42:09,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:09,830 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 254 transitions. [2021-02-23 16:42:09,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:42:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 254 transitions. [2021-02-23 16:42:09,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:42:09,836 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:09,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:42:09,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:42:09,837 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:09,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:09,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1523745824, now seen corresponding path program 1 times [2021-02-23 16:42:09,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:09,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130539591] [2021-02-23 16:42:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:09,844 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:10,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:10,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,431 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:10,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:10,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:10,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:10,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:10,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:42:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:10,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:42:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:10,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:10,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:10,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130539591] [2021-02-23 16:42:10,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:10,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:42:10,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597321980] [2021-02-23 16:42:10,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:42:10,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:10,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:42:10,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:42:10,593 INFO L87 Difference]: Start difference. First operand 235 states and 254 transitions. Second operand 4 states. [2021-02-23 16:42:11,535 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:42:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:12,562 INFO L93 Difference]: Finished difference Result 343 states and 384 transitions. [2021-02-23 16:42:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:42:12,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:42:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:12,581 INFO L225 Difference]: With dead ends: 343 [2021-02-23 16:42:12,581 INFO L226 Difference]: Without dead ends: 259 [2021-02-23 16:42:12,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:42:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-23 16:42:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 225. [2021-02-23 16:42:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2021-02-23 16:42:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 241 transitions. [2021-02-23 16:42:12,750 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 241 transitions. Word has length 148 [2021-02-23 16:42:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:12,753 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 241 transitions. [2021-02-23 16:42:12,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:42:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 241 transitions. [2021-02-23 16:42:12,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:42:12,761 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:12,762 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] [2021-02-23 16:42:12,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:42:12,762 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:12,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:12,763 INFO L82 PathProgramCache]: Analyzing trace with hash 713467396, now seen corresponding path program 1 times [2021-02-23 16:42:12,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:12,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329336983] [2021-02-23 16:42:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:12,775 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:12,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:12,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:12,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:12,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:12,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:12,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:12,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:12,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:12,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:12,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:12,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:12,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:12,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:12,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:12,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:12,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,347 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:42:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:13,519 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:42:13,521 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:42:13,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:42:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:42:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:13,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329336983] [2021-02-23 16:42:13,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:13,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:42:13,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787010980] [2021-02-23 16:42:13,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:42:13,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:13,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:42:13,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:42:13,612 INFO L87 Difference]: Start difference. First operand 225 states and 241 transitions. Second operand 9 states. [2021-02-23 16:42:14,350 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:14,842 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:15,229 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:15,624 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:16,053 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:16,452 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:17,737 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:42:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:19,773 INFO L93 Difference]: Finished difference Result 572 states and 658 transitions. [2021-02-23 16:42:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:42:19,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:42:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:19,780 INFO L225 Difference]: With dead ends: 572 [2021-02-23 16:42:19,781 INFO L226 Difference]: Without dead ends: 462 [2021-02-23 16:42:19,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:42:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-02-23 16:42:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 399. [2021-02-23 16:42:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2021-02-23 16:42:19,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 445 transitions. [2021-02-23 16:42:19,984 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 445 transitions. Word has length 157 [2021-02-23 16:42:19,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:19,985 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 445 transitions. [2021-02-23 16:42:19,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:42:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 445 transitions. [2021-02-23 16:42:19,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:42:19,988 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:19,988 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] [2021-02-23 16:42:19,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:42:19,989 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:19,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:19,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1711668213, now seen corresponding path program 1 times [2021-02-23 16:42:19,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:19,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126863166] [2021-02-23 16:42:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:19,995 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:20,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:20,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:20,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:20,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:20,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:20,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:20,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:20,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:20,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:20,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,529 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:20,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:42:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:20,648 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:42:20,650 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:42:20,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:42:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:42:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:42:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:20,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:20,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:42:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:20,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:20,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:20,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126863166] [2021-02-23 16:42:20,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:20,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:42:20,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795857136] [2021-02-23 16:42:20,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:42:20,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:20,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:42:20,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:42:20,803 INFO L87 Difference]: Start difference. First operand 399 states and 445 transitions. Second operand 14 states. [2021-02-23 16:42:21,562 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:22,076 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:22,439 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:22,846 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:23,249 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:23,651 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:24,464 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:42:25,863 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:26,276 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:26,739 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:27,222 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:27,633 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:28,022 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:28,438 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:28,838 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:29,242 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:29,718 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:30,265 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:30,696 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:31,136 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:32,978 INFO L93 Difference]: Finished difference Result 1461 states and 1862 transitions. [2021-02-23 16:42:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:42:32,980 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-23 16:42:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:32,991 INFO L225 Difference]: With dead ends: 1461 [2021-02-23 16:42:32,991 INFO L226 Difference]: Without dead ends: 1177 [2021-02-23 16:42:32,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:42:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-02-23 16:42:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 904. [2021-02-23 16:42:33,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-02-23 16:42:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1046 transitions. [2021-02-23 16:42:33,508 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1046 transitions. Word has length 165 [2021-02-23 16:42:33,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:33,509 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 1046 transitions. [2021-02-23 16:42:33,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:42:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1046 transitions. [2021-02-23 16:42:33,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 16:42:33,514 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:33,514 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] [2021-02-23 16:42:33,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:42:33,514 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:33,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2136863665, now seen corresponding path program 1 times [2021-02-23 16:42:33,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:33,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284021233] [2021-02-23 16:42:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:33,520 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:33,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:33,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:33,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:33,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:33,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:33,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:33,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:33,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:33,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:33,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:33,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:33,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:33,989 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:42:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:42:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:42:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:42:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:42:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:34,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:34,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:42:34,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284021233] [2021-02-23 16:42:34,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:34,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:42:34,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121973798] [2021-02-23 16:42:34,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:42:34,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:34,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:42:34,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:42:34,206 INFO L87 Difference]: Start difference. First operand 904 states and 1046 transitions. Second operand 6 states. [2021-02-23 16:42:34,907 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:35,990 INFO L93 Difference]: Finished difference Result 1466 states and 1748 transitions. [2021-02-23 16:42:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:42:35,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-23 16:42:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:35,998 INFO L225 Difference]: With dead ends: 1466 [2021-02-23 16:42:35,998 INFO L226 Difference]: Without dead ends: 677 [2021-02-23 16:42:36,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:42:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-02-23 16:42:36,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 643. [2021-02-23 16:42:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-02-23 16:42:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 702 transitions. [2021-02-23 16:42:36,387 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 702 transitions. Word has length 170 [2021-02-23 16:42:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:36,388 INFO L480 AbstractCegarLoop]: Abstraction has 643 states and 702 transitions. [2021-02-23 16:42:36,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:42:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 702 transitions. [2021-02-23 16:42:36,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-23 16:42:36,393 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:36,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:42:36,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:42:36,394 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:36,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:36,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1065754895, now seen corresponding path program 1 times [2021-02-23 16:42:36,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:36,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444381721] [2021-02-23 16:42:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY