/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:38:46,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:38:46,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:38:46,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:38:46,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:38:46,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:38:46,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:38:46,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:38:46,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:38:46,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:38:46,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:38:46,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:38:46,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:38:46,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:38:46,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:38:46,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:38:46,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:38:46,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:38:46,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:38:46,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:38:46,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:38:46,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:38:46,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:38:46,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:38:46,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:38:46,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:38:46,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:38:46,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:38:46,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:38:46,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:38:46,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:38:46,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:38:46,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:38:46,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:38:46,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:38:46,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:38:46,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:38:46,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:38:46,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:38:46,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:38:46,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:38:46,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:38:46,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:38:46,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:38:46,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:38:46,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:38:46,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:38:46,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:38:46,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:38:46,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:38:46,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:38:46,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:38:46,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:38:46,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:38:46,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:38:46,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:38:46,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:38:46,240 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:38:46,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:38:46,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:38:46,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:38:46,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:38:46,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:38:46,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:38:46,241 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:38:46,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:38:46,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:38:46,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:38:46,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:38:46,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:38:46,655 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:38:46,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2021-02-24 03:38:46,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33a935ef/e5251f5fdb79433abf703be7aada8637/FLAG7d18a31af [2021-02-24 03:38:47,412 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:38:47,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2021-02-24 03:38:47,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33a935ef/e5251f5fdb79433abf703be7aada8637/FLAG7d18a31af [2021-02-24 03:38:47,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33a935ef/e5251f5fdb79433abf703be7aada8637 [2021-02-24 03:38:47,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:38:47,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:38:47,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:38:47,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:38:47,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:38:47,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:38:47" (1/1) ... [2021-02-24 03:38:47,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1a368e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:47, skipping insertion in model container [2021-02-24 03:38:47,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:38:47" (1/1) ... [2021-02-24 03:38:47,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:38:47,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:38:48,124 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_product50.cil.c[12686,12699] [2021-02-24 03:38:48,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:38:48,229 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:38:48,290 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_product50.cil.c[12686,12699] [2021-02-24 03:38:48,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:38:48,371 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:38:48,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48 WrapperNode [2021-02-24 03:38:48,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:38:48,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:38:48,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:38:48,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:38:48,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (1/1) ... [2021-02-24 03:38:48,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (1/1) ... [2021-02-24 03:38:48,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (1/1) ... [2021-02-24 03:38:48,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (1/1) ... [2021-02-24 03:38:48,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (1/1) ... [2021-02-24 03:38:48,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (1/1) ... [2021-02-24 03:38:48,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (1/1) ... [2021-02-24 03:38:48,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:38:48,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:38:48,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:38:48,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:38:48,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (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 [2021-02-24 03:38:48,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:38:48,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:38:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:38:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:38:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:38:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:38:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:38:48,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:38:48,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:38:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:38:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-24 03:38:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:38:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:38:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:38:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:38:48,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:38:48,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:38:48,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:38:48,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:38:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:38:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:38:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:38:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:38:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:38:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:38:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:38:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:38:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:38:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:38:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:38:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:38:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:38:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:38:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:38:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:38:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:38:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:38:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:38:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:38:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:38:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:38:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:38:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:38:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:38:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:38:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:38:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:38:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:38:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:38:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:38:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:38:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:38:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:38:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:38:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:38:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:38:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:38:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:38:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:38:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:38:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:38:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:38:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:38:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:38:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:38:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:38:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-24 03:38:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:38:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:38:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:38:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:38:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:38:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:38:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:38:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:38:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:38:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:38:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:38:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:38:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:38:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:38:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:38:48,699 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:38:48,699 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:38:48,699 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:38:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:38:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:38:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:38:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:38:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:38:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:38:48,702 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:38:48,702 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:38:48,702 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:38:49,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:38:49,892 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:38:49,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:38:49 BoogieIcfgContainer [2021-02-24 03:38:49,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:38:49,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:38:49,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:38:49,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:38:49,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:38:47" (1/3) ... [2021-02-24 03:38:49,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9c3da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:38:49, skipping insertion in model container [2021-02-24 03:38:49,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:38:48" (2/3) ... [2021-02-24 03:38:49,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9c3da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:38:49, skipping insertion in model container [2021-02-24 03:38:49,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:38:49" (3/3) ... [2021-02-24 03:38:49,904 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2021-02-24 03:38:49,912 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:38:49,919 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:38:49,941 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:38:49,969 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:38:49,969 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:38:49,969 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:38:49,969 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:38:49,969 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:38:49,969 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:38:49,970 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:38:49,970 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:38:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-24 03:38:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-24 03:38:50,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:38:50,017 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] [2021-02-24 03:38:50,018 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:38:50,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:38:50,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1649500173, now seen corresponding path program 1 times [2021-02-24 03:38:50,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:38:50,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340470113] [2021-02-24 03:38:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:38:50,126 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:38:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:50,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:50,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:50,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:50,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:50,872 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:38:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:38:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:51,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:51,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:38:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:51,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:51,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:38:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:51,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:51,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:38:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:51,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:51,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:38:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:51,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:51,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:51,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:38:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:51,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:51,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:38:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:51,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:51,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:38:51,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340470113] [2021-02-24 03:38:51,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:38:51,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:38:51,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539063931] [2021-02-24 03:38:51,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:38:51,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:38:51,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:38:51,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:38:51,289 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-24 03:38:53,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:38:53,215 INFO L93 Difference]: Finished difference Result 504 states and 596 transitions. [2021-02-24 03:38:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:38:53,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-24 03:38:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:38:53,237 INFO L225 Difference]: With dead ends: 504 [2021-02-24 03:38:53,237 INFO L226 Difference]: Without dead ends: 312 [2021-02-24 03:38:53,243 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 [2021-02-24 03:38:53,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-24 03:38:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2021-02-24 03:38:53,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-02-24 03:38:53,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2021-02-24 03:38:53,480 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 147 [2021-02-24 03:38:53,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:38:53,483 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2021-02-24 03:38:53,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:38:53,483 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2021-02-24 03:38:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 03:38:53,497 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:38:53,498 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] [2021-02-24 03:38:53,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:38:53,498 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:38:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:38:53,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1914090465, now seen corresponding path program 1 times [2021-02-24 03:38:53,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:38:53,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726445757] [2021-02-24 03:38:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:38:53,507 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:38:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:53,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:53,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:38:53,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:53,926 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:38:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:38:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:53,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:53,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:38:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:53,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:53,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:38:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:53,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:53,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:38:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:53,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:53,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:38:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:53,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:38:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:53,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:38:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:53,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:53,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:38:54,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726445757] [2021-02-24 03:38:54,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:38:54,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:38:54,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766520067] [2021-02-24 03:38:54,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:38:54,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:38:54,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:38:54,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:38:54,045 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand 4 states. [2021-02-24 03:38:54,781 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:38:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:38:55,903 INFO L93 Difference]: Finished difference Result 416 states and 466 transitions. [2021-02-24 03:38:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:38:55,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-24 03:38:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:38:55,908 INFO L225 Difference]: With dead ends: 416 [2021-02-24 03:38:55,908 INFO L226 Difference]: Without dead ends: 295 [2021-02-24 03:38:55,911 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 [2021-02-24 03:38:55,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-24 03:38:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 260. [2021-02-24 03:38:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-24 03:38:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 279 transitions. [2021-02-24 03:38:56,011 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 279 transitions. Word has length 148 [2021-02-24 03:38:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:38:56,012 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 279 transitions. [2021-02-24 03:38:56,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:38:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 279 transitions. [2021-02-24 03:38:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-24 03:38:56,014 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:38:56,015 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] [2021-02-24 03:38:56,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:38:56,015 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:38:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:38:56,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1040112909, now seen corresponding path program 1 times [2021-02-24 03:38:56,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:38:56,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242070070] [2021-02-24 03:38:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:38:56,020 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:38:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:38:56,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:38:56,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:38:56,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,448 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:38:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:38:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:38:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:38:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:38:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:38:56,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:38:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:38:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:38:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:38:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-24 03:38:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:38:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:38:56,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:38:56,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:38:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:38:56,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242070070] [2021-02-24 03:38:56,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:38:56,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:38:56,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942700607] [2021-02-24 03:38:56,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:38:56,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:38:56,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:38:56,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:38:56,651 INFO L87 Difference]: Start difference. First operand 260 states and 279 transitions. Second operand 10 states. [2021-02-24 03:38:57,306 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:38:57,716 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:38:58,100 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:38:58,477 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:38:58,839 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:38:59,199 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:39:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:39:01,038 INFO L93 Difference]: Finished difference Result 462 states and 528 transitions. [2021-02-24 03:39:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:39:01,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-24 03:39:01,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:39:01,043 INFO L225 Difference]: With dead ends: 462 [2021-02-24 03:39:01,043 INFO L226 Difference]: Without dead ends: 317 [2021-02-24 03:39:01,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-24 03:39:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-24 03:39:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 260. [2021-02-24 03:39:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-24 03:39:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 278 transitions. [2021-02-24 03:39:01,148 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 278 transitions. Word has length 161 [2021-02-24 03:39:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:39:01,148 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 278 transitions. [2021-02-24 03:39:01,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:39:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 278 transitions. [2021-02-24 03:39:01,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-24 03:39:01,151 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:39:01,151 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] [2021-02-24 03:39:01,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:39:01,152 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:39:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:39:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash -855057199, now seen corresponding path program 1 times [2021-02-24 03:39:01,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:39:01,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818016919] [2021-02-24 03:39:01,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:39:01,156 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:39:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:01,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:01,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:01,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:01,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:01,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,548 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:39:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:39:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:39:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:39:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:39:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:39:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:39:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:39:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:01,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:39:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:01,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:39:01,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:39:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-24 03:39:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-24 03:39:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:01,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:01,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:39:01,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818016919] [2021-02-24 03:39:01,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:39:01,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:39:01,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813320167] [2021-02-24 03:39:01,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:39:01,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:39:01,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:39:01,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:39:01,765 INFO L87 Difference]: Start difference. First operand 260 states and 278 transitions. Second operand 7 states. [2021-02-24 03:39:02,444 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:39:04,350 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:39:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:39:05,454 INFO L93 Difference]: Finished difference Result 642 states and 758 transitions. [2021-02-24 03:39:05,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:39:05,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-24 03:39:05,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:39:05,460 INFO L225 Difference]: With dead ends: 642 [2021-02-24 03:39:05,460 INFO L226 Difference]: Without dead ends: 497 [2021-02-24 03:39:05,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-02-24 03:39:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-02-24 03:39:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 370. [2021-02-24 03:39:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2021-02-24 03:39:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 397 transitions. [2021-02-24 03:39:05,621 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 397 transitions. Word has length 174 [2021-02-24 03:39:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:39:05,622 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 397 transitions. [2021-02-24 03:39:05,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:39:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 397 transitions. [2021-02-24 03:39:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-24 03:39:05,627 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:39:05,627 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] [2021-02-24 03:39:05,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:39:05,628 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:39:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:39:05,629 INFO L82 PathProgramCache]: Analyzing trace with hash -783964332, now seen corresponding path program 1 times [2021-02-24 03:39:05,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:39:05,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894472467] [2021-02-24 03:39:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:39:05,632 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:39:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:05,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:05,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:05,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:05,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:05,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:39:05,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:39:05,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:39:05,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:39:05,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:39:05,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:39:05,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:05,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,080 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:39:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:39:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:39:06,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:39:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:39:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:39:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:39:06,187 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:39:06,190 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:39:06,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:39:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:39:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:39:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:39:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:39:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:39:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:39:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-02-24 03:39:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:06,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:39:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-02-24 03:39:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:39:06,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:39:06,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:39:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:39:06,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894472467] [2021-02-24 03:39:06,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:39:06,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-24 03:39:06,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326218086] [2021-02-24 03:39:06,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 03:39:06,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:39:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 03:39:06,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-24 03:39:06,404 INFO L87 Difference]: Start difference. First operand 370 states and 397 transitions. Second operand 15 states. [2021-02-24 03:39:07,116 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:39:07,619 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:39:08,024 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:39:08,446 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:39:08,854 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:39:09,231 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:39:10,070 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:39:11,586 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:39:11,962 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:39:12,350 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:39:12,744 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-24 03:39:13,098 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:39:13,448 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:39:13,818 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:39:14,210 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:39:14,612 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-24 03:39:15,015 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:39:17,449 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:39:17,867 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:39:18,400 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:39:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:39:19,712 INFO L93 Difference]: Finished difference Result 1297 states and 1630 transitions. [2021-02-24 03:39:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-24 03:39:19,713 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 198 [2021-02-24 03:39:19,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:39:19,721 INFO L225 Difference]: With dead ends: 1297 [2021-02-24 03:39:19,721 INFO L226 Difference]: Without dead ends: 1042 [2021-02-24 03:39:19,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-24 03:39:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-02-24 03:39:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 743. [2021-02-24 03:39:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2021-02-24 03:39:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 824 transitions. [2021-02-24 03:39:20,050 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 824 transitions. Word has length 198 [2021-02-24 03:39:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:39:20,051 INFO L480 AbstractCegarLoop]: Abstraction has 743 states and 824 transitions. [2021-02-24 03:39:20,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 03:39:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 824 transitions. [2021-02-24 03:39:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-02-24 03:39:20,058 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:39:20,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:39:20,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:39:20,059 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:39:20,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:39:20,060 INFO L82 PathProgramCache]: Analyzing trace with hash 457671482, now seen corresponding path program 1 times [2021-02-24 03:39:20,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:39:20,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034943828] [2021-02-24 03:39:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:39:20,110 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 03:39:20,114 INFO L168 Benchmark]: Toolchain (without parser) took 32372.24 ms. Allocated memory was 151.0 MB in the beginning and 574.6 MB in the end (delta: 423.6 MB). Free memory was 107.9 MB in the beginning and 267.0 MB in the end (delta: -159.1 MB). Peak memory consumption was 265.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:39:20,114 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 125.0 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:39:20,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.01 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 113.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:39:20,115 INFO L168 Benchmark]: Boogie Preprocessor took 178.87 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 130.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:39:20,115 INFO L168 Benchmark]: RCFGBuilder took 1342.54 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.6 MB in the beginning and 102.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 58.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:39:20,116 INFO L168 Benchmark]: TraceAbstraction took 30216.29 ms. Allocated memory was 181.4 MB in the beginning and 574.6 MB in the end (delta: 393.2 MB). Free memory was 102.0 MB in the beginning and 267.0 MB in the end (delta: -165.0 MB). Peak memory consumption was 228.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:39:20,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 125.0 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 592.01 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 113.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 178.87 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 130.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1342.54 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.6 MB in the beginning and 102.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 58.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 30216.29 ms. Allocated memory was 181.4 MB in the beginning and 574.6 MB in the end (delta: 393.2 MB). Free memory was 102.0 MB in the beginning and 267.0 MB in the end (delta: -165.0 MB). Peak memory consumption was 228.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...