/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 19:12:17,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:12:17,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:12:17,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:12:17,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:12:17,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:12:17,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:12:17,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:12:17,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:12:17,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:12:17,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:12:17,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:12:17,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:12:17,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:12:17,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:12:17,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:12:17,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:12:17,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:12:17,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:12:17,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:12:17,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:12:17,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:12:17,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:12:17,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:12:17,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 19:12:17,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 19:12:17,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 19:12:17,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 19:12:17,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 19:12:17,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 19:12:17,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 19:12:17,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 19:12:17,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 19:12:17,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 19:12:17,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 19:12:17,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 19:12:17,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 19:12:17,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 19:12:17,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:12:17,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:12:17,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:12:17,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 19:12:17,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:12:17,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:12:17,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:12:17,436 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:12:17,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:12:17,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:12:17,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:12:17,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:12:17,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:12:17,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:12:17,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:12:17,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:12:17,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:12:17,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:12:17,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:12:17,441 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:12:17,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:12:17,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:12:17,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:12:17,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:12:17,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:12:17,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:12:17,443 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:12:17,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:12:17,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:12:17,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:12:17,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:12:17,889 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:12:17,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2021-02-23 19:12:17,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0438cda/3fdf4219515842c7a27520e48467a168/FLAG6c0e593fe [2021-02-23 19:12:18,721 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:12:18,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2021-02-23 19:12:18,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0438cda/3fdf4219515842c7a27520e48467a168/FLAG6c0e593fe [2021-02-23 19:12:19,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0438cda/3fdf4219515842c7a27520e48467a168 [2021-02-23 19:12:19,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:12:19,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:12:19,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:12:19,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:12:19,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:12:19,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4cd1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19, skipping insertion in model container [2021-02-23 19:12:19,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:12:19,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:12:19,368 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c[14700,14713] [2021-02-23 19:12:19,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:12:19,383 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:12:19,536 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c[14700,14713] [2021-02-23 19:12:19,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:12:19,567 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:12:19,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19 WrapperNode [2021-02-23 19:12:19,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:12:19,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:12:19,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:12:19,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:12:19,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (1/1) ... [2021-02-23 19:12:19,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:12:19,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:12:19,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:12:19,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:12:19,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:12:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:12:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:12:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:12:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 19:12:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2021-02-23 19:12:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2021-02-23 19:12:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2021-02-23 19:12:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2021-02-23 19:12:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2021-02-23 19:12:19,749 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2021-02-23 19:12:19,749 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2021-02-23 19:12:19,749 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2021-02-23 19:12:19,749 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2021-02-23 19:12:19,749 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2021-02-23 19:12:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2021-02-23 19:12:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2021-02-23 19:12:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2021-02-23 19:12:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2021-02-23 19:12:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-02-23 19:12:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:12:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-02-23 19:12:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:12:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:12:19,756 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:12:19,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:12:19,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-23 19:12:19,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 19:12:19,757 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-23 19:12:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-23 19:12:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-23 19:12:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 19:12:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2021-02-23 19:12:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2021-02-23 19:12:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2021-02-23 19:12:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2021-02-23 19:12:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2021-02-23 19:12:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2021-02-23 19:12:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2021-02-23 19:12:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2021-02-23 19:12:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-23 19:12:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2021-02-23 19:12:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2021-02-23 19:12:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2021-02-23 19:12:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2021-02-23 19:12:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2021-02-23 19:12:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 19:12:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:12:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:12:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:12:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:12:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:12:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:12:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:12:20,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:12:20,861 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 19:12:20,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:12:20 BoogieIcfgContainer [2021-02-23 19:12:20,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:12:20,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:12:20,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:12:20,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:12:20,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:12:19" (1/3) ... [2021-02-23 19:12:20,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6d5a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:12:20, skipping insertion in model container [2021-02-23 19:12:20,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:12:19" (2/3) ... [2021-02-23 19:12:20,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6d5a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:12:20, skipping insertion in model container [2021-02-23 19:12:20,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:12:20" (3/3) ... [2021-02-23 19:12:20,874 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2021-02-23 19:12:20,881 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:12:20,888 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 19:12:20,908 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 19:12:20,935 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:12:20,935 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:12:20,936 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:12:20,936 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:12:20,936 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:12:20,936 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:12:20,936 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:12:20,937 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:12:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states. [2021-02-23 19:12:20,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-02-23 19:12:20,997 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:12:20,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:12:20,999 INFO L428 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:12:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:12:21,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1866427219, now seen corresponding path program 1 times [2021-02-23 19:12:21,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:12:21,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214064816] [2021-02-23 19:12:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:12:21,106 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:12:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:21,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:21,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:21,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:21,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:21,785 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:12:21,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:12:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:21,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:12:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:21,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:21,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:12:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 19:12:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:21,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:21,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:21,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:12:21,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 19:12:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:22,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:22,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:22,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:12:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:22,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:22,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:22,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 19:12:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:22,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:22,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:22,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:22,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:22,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:22,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:22,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-02-23 19:12:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:22,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:22,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:22,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:22,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:22,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:22,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:22,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:12:22,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214064816] [2021-02-23 19:12:22,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:12:22,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 19:12:22,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617129174] [2021-02-23 19:12:22,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 19:12:22,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:12:22,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 19:12:22,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-02-23 19:12:22,368 INFO L87 Difference]: Start difference. First operand 582 states. Second operand 14 states. [2021-02-23 19:12:23,343 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:12:23,745 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:12:24,002 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:12:28,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:12:28,131 INFO L93 Difference]: Finished difference Result 1063 states and 1326 transitions. [2021-02-23 19:12:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 19:12:28,134 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2021-02-23 19:12:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:12:28,154 INFO L225 Difference]: With dead ends: 1063 [2021-02-23 19:12:28,155 INFO L226 Difference]: Without dead ends: 585 [2021-02-23 19:12:28,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-02-23 19:12:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-02-23 19:12:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 557. [2021-02-23 19:12:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2021-02-23 19:12:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 650 transitions. [2021-02-23 19:12:28,421 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 650 transitions. Word has length 232 [2021-02-23 19:12:28,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:12:28,422 INFO L480 AbstractCegarLoop]: Abstraction has 557 states and 650 transitions. [2021-02-23 19:12:28,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 19:12:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 650 transitions. [2021-02-23 19:12:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-02-23 19:12:28,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:12:28,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:12:28,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:12:28,429 INFO L428 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:12:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:12:28,430 INFO L82 PathProgramCache]: Analyzing trace with hash 76175079, now seen corresponding path program 1 times [2021-02-23 19:12:28,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:12:28,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062968174] [2021-02-23 19:12:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:12:28,434 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:12:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:28,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:28,585 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-23 19:12:28,587 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-23 19:12:28,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,769 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:12:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:12:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:12:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:12:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:12:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:12:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:12:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:12:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:28,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:28,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:12:29,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062968174] [2021-02-23 19:12:29,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:12:29,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 19:12:29,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4005666] [2021-02-23 19:12:29,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 19:12:29,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:12:29,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 19:12:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-02-23 19:12:29,061 INFO L87 Difference]: Start difference. First operand 557 states and 650 transitions. Second operand 11 states. [2021-02-23 19:12:30,874 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:12:31,087 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:12:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:12:32,790 INFO L93 Difference]: Finished difference Result 986 states and 1177 transitions. [2021-02-23 19:12:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 19:12:32,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 243 [2021-02-23 19:12:32,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:12:32,808 INFO L225 Difference]: With dead ends: 986 [2021-02-23 19:12:32,808 INFO L226 Difference]: Without dead ends: 562 [2021-02-23 19:12:32,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2021-02-23 19:12:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-02-23 19:12:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-02-23 19:12:32,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2021-02-23 19:12:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 654 transitions. [2021-02-23 19:12:32,988 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 654 transitions. Word has length 243 [2021-02-23 19:12:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:12:32,990 INFO L480 AbstractCegarLoop]: Abstraction has 562 states and 654 transitions. [2021-02-23 19:12:32,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 19:12:32,990 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 654 transitions. [2021-02-23 19:12:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-02-23 19:12:32,995 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:12:32,995 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:12:32,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:12:32,996 INFO L428 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:12:32,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:12:32,997 INFO L82 PathProgramCache]: Analyzing trace with hash 985442721, now seen corresponding path program 1 times [2021-02-23 19:12:32,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:12:32,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012840212] [2021-02-23 19:12:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:12:33,001 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:12:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:12:33,122 WARN L141 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size [2021-02-23 19:12:33,123 WARN L147 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size 4 [2021-02-23 19:12:33,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,330 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:12:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:12:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:12:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:12:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:12:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:12:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:12:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:12:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:12:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:12:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:33,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:33,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:33,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:12:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-23 19:12:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-02-23 19:12:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:33,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:33,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 19:12:34,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012840212] [2021-02-23 19:12:34,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:12:34,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 19:12:34,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665309148] [2021-02-23 19:12:34,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 19:12:34,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:12:34,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 19:12:34,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-02-23 19:12:34,011 INFO L87 Difference]: Start difference. First operand 562 states and 654 transitions. Second operand 16 states. [2021-02-23 19:12:34,904 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:12:37,142 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:12:37,402 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:12:37,895 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 19:12:38,236 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:12:40,623 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:12:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:12:41,316 INFO L93 Difference]: Finished difference Result 1191 states and 1400 transitions. [2021-02-23 19:12:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 19:12:41,317 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 316 [2021-02-23 19:12:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:12:41,325 INFO L225 Difference]: With dead ends: 1191 [2021-02-23 19:12:41,325 INFO L226 Difference]: Without dead ends: 762 [2021-02-23 19:12:41,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=578, Invalid=1774, Unknown=0, NotChecked=0, Total=2352 [2021-02-23 19:12:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-02-23 19:12:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 754. [2021-02-23 19:12:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2021-02-23 19:12:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 871 transitions. [2021-02-23 19:12:41,516 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 871 transitions. Word has length 316 [2021-02-23 19:12:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:12:41,517 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 871 transitions. [2021-02-23 19:12:41,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 19:12:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 871 transitions. [2021-02-23 19:12:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-02-23 19:12:41,522 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:12:41,523 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:12:41,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:12:41,523 INFO L428 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:12:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:12:41,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1167012846, now seen corresponding path program 1 times [2021-02-23 19:12:41,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:12:41,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274322864] [2021-02-23 19:12:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:12:41,528 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:12:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:41,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:12:41,622 WARN L141 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size [2021-02-23 19:12:41,623 WARN L147 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size 4 [2021-02-23 19:12:41,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:41,809 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:12:41,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:12:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:41,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:41,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:12:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:12:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:41,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:12:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:41,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:12:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:41,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:41,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:12:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:41,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:41,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:12:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:41,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:41,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:41,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:12:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:42,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:42,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:42,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:42,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:42,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:12:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:42,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:42,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:42,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:42,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:42,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:42,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:42,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:12:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:42,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:42,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:42,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-23 19:12:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:42,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:42,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-02-23 19:12:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:42,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:42,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:12:42,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274322864] [2021-02-23 19:12:42,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:12:42,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 19:12:42,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357141545] [2021-02-23 19:12:42,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 19:12:42,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:12:42,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 19:12:42,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-02-23 19:12:42,430 INFO L87 Difference]: Start difference. First operand 754 states and 871 transitions. Second operand 16 states. [2021-02-23 19:12:42,671 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 19:12:43,472 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:12:45,753 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 19:12:45,884 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:12:46,012 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 19:12:46,155 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:12:46,922 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:12:49,105 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:12:49,232 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 19:12:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:12:49,914 INFO L93 Difference]: Finished difference Result 1199 states and 1410 transitions. [2021-02-23 19:12:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-23 19:12:49,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 317 [2021-02-23 19:12:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:12:49,922 INFO L225 Difference]: With dead ends: 1199 [2021-02-23 19:12:49,922 INFO L226 Difference]: Without dead ends: 767 [2021-02-23 19:12:49,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=606, Invalid=2046, Unknown=0, NotChecked=0, Total=2652 [2021-02-23 19:12:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-02-23 19:12:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 754. [2021-02-23 19:12:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2021-02-23 19:12:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 871 transitions. [2021-02-23 19:12:50,107 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 871 transitions. Word has length 317 [2021-02-23 19:12:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:12:50,108 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 871 transitions. [2021-02-23 19:12:50,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 19:12:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 871 transitions. [2021-02-23 19:12:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-02-23 19:12:50,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:12:50,114 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:12:50,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 19:12:50,114 INFO L428 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:12:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:12:50,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1260005446, now seen corresponding path program 1 times [2021-02-23 19:12:50,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:12:50,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067766194] [2021-02-23 19:12:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:12:50,119 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:12:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:12:50,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,415 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:12:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:12:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:12:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:12:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:12:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:12:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:12:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 19:12:50,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:12:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:12:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:12:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:12:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-02-23 19:12:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:50,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:50,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:12:50,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067766194] [2021-02-23 19:12:50,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:12:50,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 19:12:50,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141545287] [2021-02-23 19:12:50,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 19:12:50,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:12:50,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 19:12:50,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-23 19:12:50,817 INFO L87 Difference]: Start difference. First operand 754 states and 871 transitions. Second operand 12 states. [2021-02-23 19:12:52,484 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:12:56,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:12:56,664 INFO L93 Difference]: Finished difference Result 1646 states and 1951 transitions. [2021-02-23 19:12:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 19:12:56,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 319 [2021-02-23 19:12:56,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:12:56,674 INFO L225 Difference]: With dead ends: 1646 [2021-02-23 19:12:56,674 INFO L226 Difference]: Without dead ends: 1214 [2021-02-23 19:12:56,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 19:12:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2021-02-23 19:12:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1172. [2021-02-23 19:12:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2021-02-23 19:12:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1380 transitions. [2021-02-23 19:12:56,975 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1380 transitions. Word has length 319 [2021-02-23 19:12:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:12:56,976 INFO L480 AbstractCegarLoop]: Abstraction has 1172 states and 1380 transitions. [2021-02-23 19:12:56,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 19:12:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1380 transitions. [2021-02-23 19:12:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-02-23 19:12:56,982 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:12:56,983 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:12:56,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 19:12:56,983 INFO L428 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:12:56,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:12:56,984 INFO L82 PathProgramCache]: Analyzing trace with hash 149582571, now seen corresponding path program 1 times [2021-02-23 19:12:56,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:12:56,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517116893] [2021-02-23 19:12:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:12:56,987 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:12:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:12:57,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,263 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:12:57,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:12:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:12:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:12:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:12:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:12:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:12:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:12:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 19:12:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:12:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:12:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:12:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:12:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-23 19:12:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:57,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:57,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:12:57,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517116893] [2021-02-23 19:12:57,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:12:57,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 19:12:57,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269671457] [2021-02-23 19:12:57,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 19:12:57,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:12:57,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 19:12:57,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-23 19:12:57,643 INFO L87 Difference]: Start difference. First operand 1172 states and 1380 transitions. Second operand 12 states. [2021-02-23 19:12:57,771 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:13:00,261 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:13:00,552 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 19:13:04,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:04,252 INFO L93 Difference]: Finished difference Result 2592 states and 3130 transitions. [2021-02-23 19:13:04,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 19:13:04,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 320 [2021-02-23 19:13:04,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:04,265 INFO L225 Difference]: With dead ends: 2592 [2021-02-23 19:13:04,265 INFO L226 Difference]: Without dead ends: 1832 [2021-02-23 19:13:04,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 19:13:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2021-02-23 19:13:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1812. [2021-02-23 19:13:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2021-02-23 19:13:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2173 transitions. [2021-02-23 19:13:04,746 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2173 transitions. Word has length 320 [2021-02-23 19:13:04,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:04,747 INFO L480 AbstractCegarLoop]: Abstraction has 1812 states and 2173 transitions. [2021-02-23 19:13:04,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 19:13:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2173 transitions. [2021-02-23 19:13:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-02-23 19:13:04,750 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:04,750 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:04,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 19:13:04,751 INFO L428 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:04,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1154331829, now seen corresponding path program 1 times [2021-02-23 19:13:04,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:04,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420176191] [2021-02-23 19:13:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:04,756 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:04,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:04,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:04,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:04,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:04,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:04,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:13:04,898 WARN L141 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size [2021-02-23 19:13:04,900 WARN L147 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size 36 [2021-02-23 19:13:04,910 WARN L141 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size [2021-02-23 19:13:04,911 WARN L147 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size 38 [2021-02-23 19:13:04,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:04,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,090 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:05,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:13:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:13:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-23 19:13:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:05,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:05,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:13:05,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420176191] [2021-02-23 19:13:05,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:05,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 19:13:05,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16147187] [2021-02-23 19:13:05,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 19:13:05,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 19:13:05,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-23 19:13:05,379 INFO L87 Difference]: Start difference. First operand 1812 states and 2173 transitions. Second operand 13 states. [2021-02-23 19:13:05,497 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:13:08,842 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:13:09,077 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:13:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:10,604 INFO L93 Difference]: Finished difference Result 3210 states and 3909 transitions. [2021-02-23 19:13:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 19:13:10,605 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 320 [2021-02-23 19:13:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:10,620 INFO L225 Difference]: With dead ends: 3210 [2021-02-23 19:13:10,621 INFO L226 Difference]: Without dead ends: 1836 [2021-02-23 19:13:10,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-23 19:13:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-02-23 19:13:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1836. [2021-02-23 19:13:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2021-02-23 19:13:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2193 transitions. [2021-02-23 19:13:11,196 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2193 transitions. Word has length 320 [2021-02-23 19:13:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:11,197 INFO L480 AbstractCegarLoop]: Abstraction has 1836 states and 2193 transitions. [2021-02-23 19:13:11,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 19:13:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2193 transitions. [2021-02-23 19:13:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-02-23 19:13:11,201 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:11,201 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:11,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 19:13:11,202 INFO L428 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1735295062, now seen corresponding path program 1 times [2021-02-23 19:13:11,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:11,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608574021] [2021-02-23 19:13:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:11,206 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:13:11,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,473 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:11,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:13:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 19:13:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-02-23 19:13:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-02-23 19:13:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-02-23 19:13:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:11,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:11,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:13:11,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608574021] [2021-02-23 19:13:11,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:11,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 19:13:11,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652333714] [2021-02-23 19:13:11,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 19:13:11,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:11,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 19:13:11,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-23 19:13:11,952 INFO L87 Difference]: Start difference. First operand 1836 states and 2193 transitions. Second operand 12 states. [2021-02-23 19:13:12,076 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:13:12,837 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:13:15,110 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 19:13:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:18,285 INFO L93 Difference]: Finished difference Result 3262 states and 3940 transitions. [2021-02-23 19:13:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 19:13:18,286 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 339 [2021-02-23 19:13:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:18,300 INFO L225 Difference]: With dead ends: 3262 [2021-02-23 19:13:18,300 INFO L226 Difference]: Without dead ends: 1864 [2021-02-23 19:13:18,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=352, Invalid=980, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 19:13:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-02-23 19:13:18,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1844. [2021-02-23 19:13:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1844 states. [2021-02-23 19:13:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2198 transitions. [2021-02-23 19:13:18,817 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2198 transitions. Word has length 339 [2021-02-23 19:13:18,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:18,818 INFO L480 AbstractCegarLoop]: Abstraction has 1844 states and 2198 transitions. [2021-02-23 19:13:18,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 19:13:18,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2198 transitions. [2021-02-23 19:13:18,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-02-23 19:13:18,823 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:18,823 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:18,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 19:13:18,824 INFO L428 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:18,825 INFO L82 PathProgramCache]: Analyzing trace with hash -180945527, now seen corresponding path program 1 times [2021-02-23 19:13:18,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:18,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33530921] [2021-02-23 19:13:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:18,828 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:18,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:18,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:18,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:18,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:18,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:18,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:13:18,914 WARN L141 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size [2021-02-23 19:13:18,915 WARN L147 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size 36 [2021-02-23 19:13:18,922 WARN L141 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size [2021-02-23 19:13:18,923 WARN L147 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size 38 [2021-02-23 19:13:18,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:18,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,123 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:19,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:13:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:13:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-23 19:13:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-23 19:13:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:19,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:19,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:13:19,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33530921] [2021-02-23 19:13:19,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:19,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 19:13:19,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941092218] [2021-02-23 19:13:19,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 19:13:19,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:19,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 19:13:19,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-23 19:13:19,528 INFO L87 Difference]: Start difference. First operand 1844 states and 2198 transitions. Second operand 13 states. [2021-02-23 19:13:22,148 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-23 19:13:22,888 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:13:23,116 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:13:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:24,473 INFO L93 Difference]: Finished difference Result 3266 states and 3961 transitions. [2021-02-23 19:13:24,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 19:13:24,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 331 [2021-02-23 19:13:24,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:24,486 INFO L225 Difference]: With dead ends: 3266 [2021-02-23 19:13:24,486 INFO L226 Difference]: Without dead ends: 1868 [2021-02-23 19:13:24,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-23 19:13:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-02-23 19:13:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1868. [2021-02-23 19:13:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1868 states. [2021-02-23 19:13:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2218 transitions. [2021-02-23 19:13:25,179 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2218 transitions. Word has length 331 [2021-02-23 19:13:25,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:25,180 INFO L480 AbstractCegarLoop]: Abstraction has 1868 states and 2218 transitions. [2021-02-23 19:13:25,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 19:13:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2218 transitions. [2021-02-23 19:13:25,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-02-23 19:13:25,184 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:25,184 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:25,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 19:13:25,185 INFO L428 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:25,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1023019346, now seen corresponding path program 1 times [2021-02-23 19:13:25,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:25,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477438840] [2021-02-23 19:13:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:25,189 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:25,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:13:25,277 WARN L141 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size [2021-02-23 19:13:25,278 WARN L147 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size 36 [2021-02-23 19:13:25,284 WARN L141 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size [2021-02-23 19:13:25,285 WARN L147 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size 38 [2021-02-23 19:13:25,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,469 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:13:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:13:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-23 19:13:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-23 19:13:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-23 19:13:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:25,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:25,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:13:25,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477438840] [2021-02-23 19:13:25,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:25,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 19:13:25,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134886712] [2021-02-23 19:13:25,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 19:13:25,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:25,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 19:13:25,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-23 19:13:25,787 INFO L87 Difference]: Start difference. First operand 1868 states and 2218 transitions. Second operand 13 states. [2021-02-23 19:13:28,943 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:13:29,172 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:13:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:30,551 INFO L93 Difference]: Finished difference Result 3314 states and 4001 transitions. [2021-02-23 19:13:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 19:13:30,551 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 341 [2021-02-23 19:13:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:30,563 INFO L225 Difference]: With dead ends: 3314 [2021-02-23 19:13:30,564 INFO L226 Difference]: Without dead ends: 1892 [2021-02-23 19:13:30,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-23 19:13:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-02-23 19:13:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1892. [2021-02-23 19:13:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2021-02-23 19:13:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2238 transitions. [2021-02-23 19:13:31,029 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2238 transitions. Word has length 341 [2021-02-23 19:13:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:31,030 INFO L480 AbstractCegarLoop]: Abstraction has 1892 states and 2238 transitions. [2021-02-23 19:13:31,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 19:13:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2238 transitions. [2021-02-23 19:13:31,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-02-23 19:13:31,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:31,035 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:31,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 19:13:31,036 INFO L428 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:31,036 INFO L82 PathProgramCache]: Analyzing trace with hash 553637762, now seen corresponding path program 1 times [2021-02-23 19:13:31,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:31,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226720703] [2021-02-23 19:13:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:31,039 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:13:31,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,317 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 19:13:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-23 19:13:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-02-23 19:13:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-02-23 19:13:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-02-23 19:13:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-02-23 19:13:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:31,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:31,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:13:31,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226720703] [2021-02-23 19:13:31,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:31,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 19:13:31,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177422141] [2021-02-23 19:13:31,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 19:13:31,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:31,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 19:13:31,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-23 19:13:31,688 INFO L87 Difference]: Start difference. First operand 1892 states and 2238 transitions. Second operand 12 states. [2021-02-23 19:13:32,467 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:13:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:37,717 INFO L93 Difference]: Finished difference Result 3420 states and 4080 transitions. [2021-02-23 19:13:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 19:13:37,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 349 [2021-02-23 19:13:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:37,730 INFO L225 Difference]: With dead ends: 3420 [2021-02-23 19:13:37,731 INFO L226 Difference]: Without dead ends: 1974 [2021-02-23 19:13:37,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=351, Invalid=981, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 19:13:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2021-02-23 19:13:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1892. [2021-02-23 19:13:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2021-02-23 19:13:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2234 transitions. [2021-02-23 19:13:38,194 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2234 transitions. Word has length 349 [2021-02-23 19:13:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:38,195 INFO L480 AbstractCegarLoop]: Abstraction has 1892 states and 2234 transitions. [2021-02-23 19:13:38,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 19:13:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2234 transitions. [2021-02-23 19:13:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-02-23 19:13:38,200 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:38,200 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:38,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 19:13:38,201 INFO L428 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:38,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:38,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2104728561, now seen corresponding path program 1 times [2021-02-23 19:13:38,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:38,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444130281] [2021-02-23 19:13:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:38,204 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:38,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:38,284 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-23 19:13:38,285 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-23 19:13:38,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,476 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:13:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:13:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-23 19:13:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-23 19:13:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-23 19:13:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:38,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:38,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:13:38,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444130281] [2021-02-23 19:13:38,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:38,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 19:13:38,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152979110] [2021-02-23 19:13:38,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 19:13:38,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:38,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 19:13:38,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-23 19:13:38,816 INFO L87 Difference]: Start difference. First operand 1892 states and 2234 transitions. Second operand 13 states. [2021-02-23 19:13:38,962 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:13:41,760 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:13:42,022 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:13:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:43,365 INFO L93 Difference]: Finished difference Result 3358 states and 4015 transitions. [2021-02-23 19:13:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 19:13:43,366 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 341 [2021-02-23 19:13:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:43,376 INFO L225 Difference]: With dead ends: 3358 [2021-02-23 19:13:43,376 INFO L226 Difference]: Without dead ends: 1912 [2021-02-23 19:13:43,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-23 19:13:43,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2021-02-23 19:13:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1912. [2021-02-23 19:13:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1912 states. [2021-02-23 19:13:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2250 transitions. [2021-02-23 19:13:44,046 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2250 transitions. Word has length 341 [2021-02-23 19:13:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:44,046 INFO L480 AbstractCegarLoop]: Abstraction has 1912 states and 2250 transitions. [2021-02-23 19:13:44,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 19:13:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2250 transitions. [2021-02-23 19:13:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-02-23 19:13:44,049 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:44,049 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:44,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 19:13:44,049 INFO L428 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:44,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:44,050 INFO L82 PathProgramCache]: Analyzing trace with hash -483678640, now seen corresponding path program 1 times [2021-02-23 19:13:44,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:44,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476300034] [2021-02-23 19:13:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:44,054 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:44,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:13:44,134 WARN L141 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size [2021-02-23 19:13:44,136 WARN L147 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size 36 [2021-02-23 19:13:44,142 WARN L141 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size [2021-02-23 19:13:44,143 WARN L147 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size 38 [2021-02-23 19:13:44,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,333 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:44,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:13:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:13:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-23 19:13:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-23 19:13:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-23 19:13:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-02-23 19:13:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:44,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:44,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 19:13:44,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476300034] [2021-02-23 19:13:44,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:44,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 19:13:44,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194014376] [2021-02-23 19:13:44,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 19:13:44,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:44,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 19:13:44,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-23 19:13:44,663 INFO L87 Difference]: Start difference. First operand 1912 states and 2250 transitions. Second operand 13 states. [2021-02-23 19:13:48,162 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:13:48,386 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:13:49,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:49,221 INFO L93 Difference]: Finished difference Result 3406 states and 4059 transitions. [2021-02-23 19:13:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 19:13:49,222 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 351 [2021-02-23 19:13:49,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:49,233 INFO L225 Difference]: With dead ends: 3406 [2021-02-23 19:13:49,234 INFO L226 Difference]: Without dead ends: 1940 [2021-02-23 19:13:49,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-23 19:13:49,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2021-02-23 19:13:49,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1940. [2021-02-23 19:13:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2021-02-23 19:13:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2274 transitions. [2021-02-23 19:13:49,927 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2274 transitions. Word has length 351 [2021-02-23 19:13:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:49,928 INFO L480 AbstractCegarLoop]: Abstraction has 1940 states and 2274 transitions. [2021-02-23 19:13:49,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 19:13:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2274 transitions. [2021-02-23 19:13:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-02-23 19:13:49,933 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:49,933 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:49,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 19:13:49,934 INFO L428 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1024980272, now seen corresponding path program 1 times [2021-02-23 19:13:49,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:49,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422182437] [2021-02-23 19:13:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:49,938 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:50,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:50,024 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-23 19:13:50,027 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-23 19:13:50,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,209 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:13:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:13:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-23 19:13:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-23 19:13:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-23 19:13:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-02-23 19:13:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-02-23 19:13:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:50,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:50,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:13:50,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422182437] [2021-02-23 19:13:50,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:50,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 19:13:50,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041309517] [2021-02-23 19:13:50,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 19:13:50,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:50,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 19:13:50,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-23 19:13:50,539 INFO L87 Difference]: Start difference. First operand 1940 states and 2274 transitions. Second operand 13 states. [2021-02-23 19:13:53,907 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:13:54,134 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:13:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:13:55,356 INFO L93 Difference]: Finished difference Result 3454 states and 4095 transitions. [2021-02-23 19:13:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 19:13:55,356 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 360 [2021-02-23 19:13:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:13:55,368 INFO L225 Difference]: With dead ends: 3454 [2021-02-23 19:13:55,369 INFO L226 Difference]: Without dead ends: 1960 [2021-02-23 19:13:55,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-23 19:13:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-02-23 19:13:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1960. [2021-02-23 19:13:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2021-02-23 19:13:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2290 transitions. [2021-02-23 19:13:56,099 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2290 transitions. Word has length 360 [2021-02-23 19:13:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:13:56,100 INFO L480 AbstractCegarLoop]: Abstraction has 1960 states and 2290 transitions. [2021-02-23 19:13:56,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 19:13:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2290 transitions. [2021-02-23 19:13:56,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-02-23 19:13:56,105 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:13:56,106 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:13:56,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 19:13:56,106 INFO L428 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:13:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:13:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash -158957949, now seen corresponding path program 1 times [2021-02-23 19:13:56,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:13:56,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931649341] [2021-02-23 19:13:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:13:56,111 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:13:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 19:13:56,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:13:56,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,420 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:13:56,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:13:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:13:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:13:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:13:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:13:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:13:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:13:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:56,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:56,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:13:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:13:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:13:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:13:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-02-23 19:13:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:56,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:13:56,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:13:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:13:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 19:13:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:13:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:13:56,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-23 19:13:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-23 19:13:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:13:56,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:13:56,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:13:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:13:56,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931649341] [2021-02-23 19:13:56,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:13:56,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 19:13:56,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671538594] [2021-02-23 19:13:56,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 19:13:56,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:13:56,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 19:13:56,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-02-23 19:13:56,959 INFO L87 Difference]: Start difference. First operand 1960 states and 2290 transitions. Second operand 19 states. [2021-02-23 19:13:57,846 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-23 19:13:58,454 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:13:59,328 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-02-23 19:13:59,934 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:02,221 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:02,506 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:02,758 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:14:03,041 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:05,777 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:14:06,032 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:14:06,287 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:06,551 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:14:06,801 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:14:07,056 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:07,548 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:14:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:14:11,505 INFO L93 Difference]: Finished difference Result 4884 states and 5719 transitions. [2021-02-23 19:14:11,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-02-23 19:14:11,506 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 362 [2021-02-23 19:14:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:14:11,524 INFO L225 Difference]: With dead ends: 4884 [2021-02-23 19:14:11,524 INFO L226 Difference]: Without dead ends: 3350 [2021-02-23 19:14:11,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1009, Invalid=3821, Unknown=0, NotChecked=0, Total=4830 [2021-02-23 19:14:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2021-02-23 19:14:12,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 3122. [2021-02-23 19:14:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2021-02-23 19:14:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 3626 transitions. [2021-02-23 19:14:12,394 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 3626 transitions. Word has length 362 [2021-02-23 19:14:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:14:12,394 INFO L480 AbstractCegarLoop]: Abstraction has 3122 states and 3626 transitions. [2021-02-23 19:14:12,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 19:14:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 3626 transitions. [2021-02-23 19:14:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-02-23 19:14:12,399 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:14:12,399 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:14:12,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 19:14:12,399 INFO L428 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:14:12,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:14:12,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1056560781, now seen corresponding path program 1 times [2021-02-23 19:14:12,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:14:12,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632874684] [2021-02-23 19:14:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:14:12,403 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:14:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:14:12,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:14:12,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:14:12,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:14:12,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,702 WARN L202 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:14:12,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:14:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:14:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:14:12,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:14:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:14:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:14:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:14:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:14:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:14:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:14:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:14:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:12,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:14:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:12,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:12,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:14:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:13,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:13,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:13,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:13,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:13,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-23 19:14:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:13,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:13,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-23 19:14:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:13,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:13,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-23 19:14:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:13,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:13,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-02-23 19:14:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:13,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:13,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-02-23 19:14:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:13,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:13,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:13,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:13,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 19:14:13,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632874684] [2021-02-23 19:14:13,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:14:13,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 19:14:13,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506590959] [2021-02-23 19:14:13,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 19:14:13,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:14:13,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 19:14:13,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-02-23 19:14:13,242 INFO L87 Difference]: Start difference. First operand 3122 states and 3626 transitions. Second operand 18 states. [2021-02-23 19:14:14,454 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:14,709 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:17,464 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2021-02-23 19:14:17,930 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:21,375 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:14:21,802 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:14:24,275 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:24,524 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-23 19:14:24,774 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-23 19:14:25,011 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-23 19:14:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:14:25,823 INFO L93 Difference]: Finished difference Result 6132 states and 7132 transitions. [2021-02-23 19:14:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-23 19:14:25,824 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 363 [2021-02-23 19:14:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:14:25,841 INFO L225 Difference]: With dead ends: 6132 [2021-02-23 19:14:25,841 INFO L226 Difference]: Without dead ends: 3946 [2021-02-23 19:14:25,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=904, Invalid=2756, Unknown=0, NotChecked=0, Total=3660 [2021-02-23 19:14:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-02-23 19:14:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3342. [2021-02-23 19:14:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3342 states. [2021-02-23 19:14:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3342 states to 3342 states and 3862 transitions. [2021-02-23 19:14:26,927 INFO L78 Accepts]: Start accepts. Automaton has 3342 states and 3862 transitions. Word has length 363 [2021-02-23 19:14:26,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:14:26,928 INFO L480 AbstractCegarLoop]: Abstraction has 3342 states and 3862 transitions. [2021-02-23 19:14:26,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 19:14:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3342 states and 3862 transitions. [2021-02-23 19:14:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-02-23 19:14:26,932 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:14:26,933 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:14:26,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 19:14:26,933 INFO L428 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:14:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:14:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash 375308354, now seen corresponding path program 1 times [2021-02-23 19:14:26,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:14:26,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299701627] [2021-02-23 19:14:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:14:26,937 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:14:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:27,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:27,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:14:27,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:14:27,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:14:27,050 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-23 19:14:27,051 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-23 19:14:27,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,289 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:14:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:14:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:14:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:14:27,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:14:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:14:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:14:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:14:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:14:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:14:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:14:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:14:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:14:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:14:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-02-23 19:14:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:14:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 19:14:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:14:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-23 19:14:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-23 19:14:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:27,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:27,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 19:14:27,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299701627] [2021-02-23 19:14:27,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:14:27,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 19:14:27,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604126792] [2021-02-23 19:14:27,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 19:14:27,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:14:27,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 19:14:27,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-02-23 19:14:27,804 INFO L87 Difference]: Start difference. First operand 3342 states and 3862 transitions. Second operand 19 states. [2021-02-23 19:14:28,957 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:33,927 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:14:34,431 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:34,734 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-23 19:14:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:14:35,909 INFO L93 Difference]: Finished difference Result 3570 states and 4133 transitions. [2021-02-23 19:14:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-23 19:14:35,910 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 364 [2021-02-23 19:14:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:14:35,923 INFO L225 Difference]: With dead ends: 3570 [2021-02-23 19:14:35,924 INFO L226 Difference]: Without dead ends: 3568 [2021-02-23 19:14:35,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2021-02-23 19:14:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-02-23 19:14:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3370. [2021-02-23 19:14:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2021-02-23 19:14:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 3890 transitions. [2021-02-23 19:14:36,828 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 3890 transitions. Word has length 364 [2021-02-23 19:14:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:14:36,828 INFO L480 AbstractCegarLoop]: Abstraction has 3370 states and 3890 transitions. [2021-02-23 19:14:36,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 19:14:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 3890 transitions. [2021-02-23 19:14:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-02-23 19:14:36,833 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:14:36,833 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:14:36,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 19:14:36,834 INFO L428 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:14:36,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:14:36,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1636021951, now seen corresponding path program 1 times [2021-02-23 19:14:36,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:14:36,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162927162] [2021-02-23 19:14:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:14:36,839 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:14:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:36,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:36,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:36,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:36,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 19:14:36,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:36,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:14:36,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:36,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,152 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:14:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:14:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:14:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:14:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:14:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:14:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:14:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:14:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:14:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:14:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:37,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:14:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:37,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:14:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:14:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:14:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-02-23 19:14:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:37,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:14:37,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:14:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:14:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 19:14:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:14:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-23 19:14:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-23 19:14:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:37,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-23 19:14:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:37,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:37,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 19:14:37,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162927162] [2021-02-23 19:14:37,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:14:37,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 19:14:37,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939882356] [2021-02-23 19:14:37,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 19:14:37,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:14:37,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 19:14:37,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-02-23 19:14:37,673 INFO L87 Difference]: Start difference. First operand 3370 states and 3890 transitions. Second operand 19 states. [2021-02-23 19:14:37,826 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:14:38,649 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-23 19:14:39,314 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:41,138 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-02-23 19:14:41,759 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:43,485 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:46,312 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:14:46,825 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:14:47,075 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:14:47,342 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:14:47,631 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:14:47,881 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:48,167 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:51,718 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:14:54,679 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:14:54,942 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:14:55,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:14:55,242 INFO L93 Difference]: Finished difference Result 8108 states and 9433 transitions. [2021-02-23 19:14:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-02-23 19:14:55,248 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 372 [2021-02-23 19:14:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:14:55,272 INFO L225 Difference]: With dead ends: 8108 [2021-02-23 19:14:55,272 INFO L226 Difference]: Without dead ends: 5746 [2021-02-23 19:14:55,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1097, Invalid=4305, Unknown=0, NotChecked=0, Total=5402 [2021-02-23 19:14:55,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2021-02-23 19:14:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 3949. [2021-02-23 19:14:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3949 states. [2021-02-23 19:14:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 4586 transitions. [2021-02-23 19:14:56,594 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 4586 transitions. Word has length 372 [2021-02-23 19:14:56,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:14:56,595 INFO L480 AbstractCegarLoop]: Abstraction has 3949 states and 4586 transitions. [2021-02-23 19:14:56,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 19:14:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 4586 transitions. [2021-02-23 19:14:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-02-23 19:14:56,598 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:14:56,599 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:14:56,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 19:14:56,599 INFO L428 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:14:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:14:56,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1057181460, now seen corresponding path program 1 times [2021-02-23 19:14:56,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:14:56,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658755377] [2021-02-23 19:14:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:14:56,603 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:14:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:56,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:56,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:56,678 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-02-23 19:14:56,679 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size 20 [2021-02-23 19:14:56,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:56,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:56,952 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:14:56,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:14:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:56,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:56,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:56,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:14:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:56,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:56,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:14:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:56,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:56,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:56,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:14:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:56,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:56,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:14:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:14:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:57,066 WARN L141 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-02-23 19:14:57,067 WARN L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-02-23 19:14:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:14:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:57,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:57,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-23 19:14:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:14:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-23 19:14:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:14:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:14:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-02-23 19:14:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,294 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size [2021-02-23 19:14:57,295 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size 17 [2021-02-23 19:14:57,323 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-02-23 19:14:57,324 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size 20 [2021-02-23 19:14:57,356 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-02-23 19:14:57,360 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size 40 [2021-02-23 19:14:57,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:14:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:14:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 19:14:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:14:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-23 19:14:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:14:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 19:14:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-23 19:14:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:14:57,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658755377] [2021-02-23 19:14:57,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:14:57,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 19:14:57,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277218148] [2021-02-23 19:14:57,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 19:14:57,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:14:57,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 19:14:57,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-02-23 19:14:57,592 INFO L87 Difference]: Start difference. First operand 3949 states and 4586 transitions. Second operand 20 states. [2021-02-23 19:14:59,282 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:15:00,212 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-23 19:15:00,614 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-23 19:15:02,486 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 19:15:04,378 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-23 19:15:04,726 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-23 19:15:05,250 WARN L202 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2021-02-23 19:15:05,774 WARN L202 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2021-02-23 19:15:06,059 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:15:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:12,096 INFO L93 Difference]: Finished difference Result 7552 states and 8906 transitions. [2021-02-23 19:15:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-23 19:15:12,097 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 372 [2021-02-23 19:15:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:12,115 INFO L225 Difference]: With dead ends: 7552 [2021-02-23 19:15:12,116 INFO L226 Difference]: Without dead ends: 4398 [2021-02-23 19:15:12,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2021-02-23 19:15:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2021-02-23 19:15:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 3841. [2021-02-23 19:15:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3841 states. [2021-02-23 19:15:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 4440 transitions. [2021-02-23 19:15:13,365 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 4440 transitions. Word has length 372 [2021-02-23 19:15:13,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:13,365 INFO L480 AbstractCegarLoop]: Abstraction has 3841 states and 4440 transitions. [2021-02-23 19:15:13,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 19:15:13,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 4440 transitions. [2021-02-23 19:15:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2021-02-23 19:15:13,369 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:13,370 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:15:13,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 19:15:13,370 INFO L428 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:13,371 INFO L82 PathProgramCache]: Analyzing trace with hash 880146998, now seen corresponding path program 1 times [2021-02-23 19:15:13,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:13,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209896637] [2021-02-23 19:15:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:13,374 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:13,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,626 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:15:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:15:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:15:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:15:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:15:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:15:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:13,743 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-23 19:15:13,744 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-23 19:15:13,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:15:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-23 19:15:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:15:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-02-23 19:15:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:15:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:15:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-02-23 19:15:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 19:15:13,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 19:15:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 19:15:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 19:15:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:15:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 19:15:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 19:15:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:14,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209896637] [2021-02-23 19:15:14,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:14,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 19:15:14,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202009834] [2021-02-23 19:15:14,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 19:15:14,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:14,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 19:15:14,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-02-23 19:15:14,117 INFO L87 Difference]: Start difference. First operand 3841 states and 4440 transitions. Second operand 14 states. [2021-02-23 19:15:14,241 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:15:15,023 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:15:16,935 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:15:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:26,656 INFO L93 Difference]: Finished difference Result 10378 states and 12179 transitions. [2021-02-23 19:15:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-23 19:15:26,657 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 379 [2021-02-23 19:15:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:26,683 INFO L225 Difference]: With dead ends: 10378 [2021-02-23 19:15:26,683 INFO L226 Difference]: Without dead ends: 7361 [2021-02-23 19:15:26,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=503, Invalid=1753, Unknown=0, NotChecked=0, Total=2256 [2021-02-23 19:15:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7361 states. [2021-02-23 19:15:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7361 to 6491. [2021-02-23 19:15:28,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6491 states. [2021-02-23 19:15:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 7575 transitions. [2021-02-23 19:15:28,922 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 7575 transitions. Word has length 379 [2021-02-23 19:15:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:28,923 INFO L480 AbstractCegarLoop]: Abstraction has 6491 states and 7575 transitions. [2021-02-23 19:15:28,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 19:15:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 7575 transitions. [2021-02-23 19:15:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-02-23 19:15:28,927 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:28,927 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:15:28,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 19:15:28,928 INFO L428 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:28,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1287855307, now seen corresponding path program 1 times [2021-02-23 19:15:28,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:28,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747804476] [2021-02-23 19:15:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:28,931 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 19:15:29,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,213 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:15:29,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:15:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:15:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:15:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:15:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:15:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:15:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-23 19:15:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:29,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 19:15:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:15:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:29,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-02-23 19:15:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:15:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:15:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-02-23 19:15:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:29,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:29,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 19:15:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 19:15:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 19:15:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 19:15:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:15:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 19:15:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 19:15:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:29,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747804476] [2021-02-23 19:15:29,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:29,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 19:15:29,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328384472] [2021-02-23 19:15:29,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 19:15:29,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:29,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 19:15:29,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-02-23 19:15:29,842 INFO L87 Difference]: Start difference. First operand 6491 states and 7575 transitions. Second operand 19 states. [2021-02-23 19:15:30,731 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-23 19:15:32,902 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-23 19:15:33,911 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:15:34,330 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-02-23 19:15:34,863 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-23 19:15:35,214 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:15:37,628 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-02-23 19:15:37,950 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-02-23 19:15:38,236 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-02-23 19:15:38,510 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-02-23 19:15:38,825 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-23 19:15:39,107 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-23 19:15:39,373 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2021-02-23 19:15:39,632 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-23 19:15:47,563 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:15:47,837 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-02-23 19:15:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:50,202 INFO L93 Difference]: Finished difference Result 12804 states and 15141 transitions. [2021-02-23 19:15:50,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-02-23 19:15:50,208 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 381 [2021-02-23 19:15:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:50,235 INFO L225 Difference]: With dead ends: 12804 [2021-02-23 19:15:50,235 INFO L226 Difference]: Without dead ends: 7354 [2021-02-23 19:15:50,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=926, Invalid=3496, Unknown=0, NotChecked=0, Total=4422 [2021-02-23 19:15:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2021-02-23 19:15:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 6411. [2021-02-23 19:15:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6411 states. [2021-02-23 19:15:52,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 7469 transitions. [2021-02-23 19:15:52,836 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 7469 transitions. Word has length 381 [2021-02-23 19:15:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:52,836 INFO L480 AbstractCegarLoop]: Abstraction has 6411 states and 7469 transitions. [2021-02-23 19:15:52,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 19:15:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 7469 transitions. [2021-02-23 19:15:52,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-02-23 19:15:52,840 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:52,840 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:15:52,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-23 19:15:52,840 INFO L428 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:52,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:52,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1690610776, now seen corresponding path program 1 times [2021-02-23 19:15:52,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:52,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039728875] [2021-02-23 19:15:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:52,843 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:52,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:52,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:52,933 WARN L141 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-02-23 19:15:52,934 WARN L147 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size 9 [2021-02-23 19:15:52,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:52,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,156 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:15:53,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:15:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:15:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:15:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:53,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:15:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:15:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:15:53,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 19:15:53,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:15:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:15:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-23 19:15:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:15:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-02-23 19:15:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:15:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:15:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-02-23 19:15:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 19:15:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 19:15:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 19:15:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:15:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 19:15:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 19:15:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:53,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039728875] [2021-02-23 19:15:53,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:53,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 19:15:53,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716018919] [2021-02-23 19:15:53,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 19:15:53,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:53,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 19:15:53,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-02-23 19:15:53,727 INFO L87 Difference]: Start difference. First operand 6411 states and 7469 transitions. Second operand 19 states. [2021-02-23 19:15:55,458 WARN L202 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 157 [2021-02-23 19:15:55,731 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2021-02-23 19:15:56,209 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-23 19:16:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:02,836 INFO L93 Difference]: Finished difference Result 12243 states and 14330 transitions. [2021-02-23 19:16:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-23 19:16:02,838 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 389 [2021-02-23 19:16:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:02,862 INFO L225 Difference]: With dead ends: 12243 [2021-02-23 19:16:02,862 INFO L226 Difference]: Without dead ends: 6451 [2021-02-23 19:16:02,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2021-02-23 19:16:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2021-02-23 19:16:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6119. [2021-02-23 19:16:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6119 states. [2021-02-23 19:16:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 7132 transitions. [2021-02-23 19:16:05,628 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 7132 transitions. Word has length 389 [2021-02-23 19:16:05,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:05,629 INFO L480 AbstractCegarLoop]: Abstraction has 6119 states and 7132 transitions. [2021-02-23 19:16:05,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 19:16:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 7132 transitions. [2021-02-23 19:16:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-02-23 19:16:05,634 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:05,635 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:16:05,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-23 19:16:05,635 INFO L428 AbstractCegarLoop]: === Iteration 23 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:05,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:05,636 INFO L82 PathProgramCache]: Analyzing trace with hash -484686856, now seen corresponding path program 1 times [2021-02-23 19:16:05,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:05,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637515213] [2021-02-23 19:16:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:05,639 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:05,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:05,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:16:05,722 WARN L141 QuantifierPusher]: treesize reduction 26, result has 33.3 percent of original size [2021-02-23 19:16:05,723 WARN L147 QuantifierPusher]: treesize reduction 26, result has 33.3 percent of original size 13 [2021-02-23 19:16:05,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:05,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:05,935 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:16:05,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:05,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:05,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:16:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:05,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:05,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:16:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:05,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:16:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:05,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:05,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:05,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:16:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:16:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:16:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-23 19:16:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:16:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-02-23 19:16:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:06,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:06,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:16:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:16:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:16:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-02-23 19:16:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 19:16:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 19:16:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 19:16:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:16:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 19:16:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 19:16:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:06,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637515213] [2021-02-23 19:16:06,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:06,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 19:16:06,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105008743] [2021-02-23 19:16:06,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 19:16:06,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 19:16:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-02-23 19:16:06,491 INFO L87 Difference]: Start difference. First operand 6119 states and 7132 transitions. Second operand 19 states. [2021-02-23 19:16:08,254 WARN L202 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 157 [2021-02-23 19:16:08,525 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-02-23 19:16:09,012 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-23 19:16:11,236 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-23 19:16:11,406 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 19:16:12,410 WARN L202 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 156 [2021-02-23 19:16:13,631 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2021-02-23 19:16:15,074 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-23 19:16:15,384 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:16:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:18,590 INFO L93 Difference]: Finished difference Result 11614 states and 13583 transitions. [2021-02-23 19:16:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-23 19:16:18,591 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 389 [2021-02-23 19:16:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:18,611 INFO L225 Difference]: With dead ends: 11614 [2021-02-23 19:16:18,611 INFO L226 Difference]: Without dead ends: 6150 [2021-02-23 19:16:18,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=702, Invalid=2378, Unknown=0, NotChecked=0, Total=3080 [2021-02-23 19:16:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-02-23 19:16:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 6114. [2021-02-23 19:16:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6114 states. [2021-02-23 19:16:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 7122 transitions. [2021-02-23 19:16:21,251 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 7122 transitions. Word has length 389 [2021-02-23 19:16:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:21,252 INFO L480 AbstractCegarLoop]: Abstraction has 6114 states and 7122 transitions. [2021-02-23 19:16:21,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 19:16:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 7122 transitions. [2021-02-23 19:16:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-02-23 19:16:21,255 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:21,255 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:16:21,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-23 19:16:21,255 INFO L428 AbstractCegarLoop]: === Iteration 24 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:21,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1739823215, now seen corresponding path program 1 times [2021-02-23 19:16:21,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:21,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320014360] [2021-02-23 19:16:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:21,258 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:16:21,320 WARN L141 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size [2021-02-23 19:16:21,320 WARN L147 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size 4 [2021-02-23 19:16:21,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,526 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:16:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:16:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:16:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:16:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:16:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:16:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:16:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:16:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-23 19:16:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:16:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-02-23 19:16:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:21,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:21,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:21,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:16:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:16:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-02-23 19:16:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 19:16:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 19:16:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 19:16:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:16:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 19:16:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 19:16:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:22,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320014360] [2021-02-23 19:16:22,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:22,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 19:16:22,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793590134] [2021-02-23 19:16:22,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 19:16:22,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:22,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 19:16:22,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-02-23 19:16:22,054 INFO L87 Difference]: Start difference. First operand 6114 states and 7122 transitions. Second operand 16 states. [2021-02-23 19:16:22,314 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 19:16:23,070 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:16:23,901 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:16:25,849 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-23 19:16:25,980 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 19:16:26,136 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:16:28,364 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-02-23 19:16:29,037 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:16:31,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:31,876 INFO L93 Difference]: Finished difference Result 11638 states and 13618 transitions. [2021-02-23 19:16:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 19:16:31,877 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 389 [2021-02-23 19:16:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:31,896 INFO L225 Difference]: With dead ends: 11638 [2021-02-23 19:16:31,896 INFO L226 Difference]: Without dead ends: 6134 [2021-02-23 19:16:31,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=628, Invalid=1724, Unknown=0, NotChecked=0, Total=2352 [2021-02-23 19:16:31,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6134 states. [2021-02-23 19:16:34,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6134 to 6110. [2021-02-23 19:16:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2021-02-23 19:16:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 7108 transitions. [2021-02-23 19:16:34,482 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 7108 transitions. Word has length 389 [2021-02-23 19:16:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:34,483 INFO L480 AbstractCegarLoop]: Abstraction has 6110 states and 7108 transitions. [2021-02-23 19:16:34,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 19:16:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 7108 transitions. [2021-02-23 19:16:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-02-23 19:16:34,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:34,486 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:16:34,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-23 19:16:34,487 INFO L428 AbstractCegarLoop]: === Iteration 25 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:34,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1909142807, now seen corresponding path program 1 times [2021-02-23 19:16:34,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:34,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926920790] [2021-02-23 19:16:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:34,491 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:16:34,558 WARN L141 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size [2021-02-23 19:16:34,559 WARN L147 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size 4 [2021-02-23 19:16:34,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,771 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-23 19:16:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:16:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-23 19:16:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-23 19:16:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 19:16:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 19:16:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 19:16:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:16:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-23 19:16:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-23 19:16:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:34,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:34,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-02-23 19:16:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:35,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:35,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:16:35,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 19:16:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 19:16:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-02-23 19:16:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 19:16:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 19:16:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-23 19:16:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:16:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-23 19:16:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 19:16:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:35,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:35,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:35,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926920790] [2021-02-23 19:16:35,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:35,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 19:16:35,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620612994] [2021-02-23 19:16:35,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 19:16:35,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:35,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 19:16:35,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-02-23 19:16:35,317 INFO L87 Difference]: Start difference. First operand 6110 states and 7108 transitions. Second operand 16 states. [2021-02-23 19:16:36,276 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-23 19:16:37,150 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-23 19:16:38,916 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 19:16:39,048 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:16:39,178 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 19:16:39,329 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:16:42,036 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:16:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:45,091 INFO L93 Difference]: Finished difference Result 11563 states and 13516 transitions. [2021-02-23 19:16:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-23 19:16:45,092 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 390 [2021-02-23 19:16:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:45,119 INFO L225 Difference]: With dead ends: 11563 [2021-02-23 19:16:45,120 INFO L226 Difference]: Without dead ends: 6123 [2021-02-23 19:16:45,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=664, Invalid=1988, Unknown=0, NotChecked=0, Total=2652 [2021-02-23 19:16:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2021-02-23 19:16:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 6105. [2021-02-23 19:16:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6105 states. [2021-02-23 19:16:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 7098 transitions. [2021-02-23 19:16:47,604 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 7098 transitions. Word has length 390 [2021-02-23 19:16:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:47,604 INFO L480 AbstractCegarLoop]: Abstraction has 6105 states and 7098 transitions. [2021-02-23 19:16:47,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 19:16:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 7098 transitions. [2021-02-23 19:16:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-02-23 19:16:47,609 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:47,609 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:16:47,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-23 19:16:47,610 INFO L428 AbstractCegarLoop]: === Iteration 26 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:47,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:47,610 INFO L82 PathProgramCache]: Analyzing trace with hash 971096905, now seen corresponding path program 1 times [2021-02-23 19:16:47,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:47,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642225140] [2021-02-23 19:16:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:47,613 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:16:47,651 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:16:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:16:47,704 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:16:48,125 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 19:16:48,126 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 19:16:48,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-23 19:16:48,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:16:48 BoogieIcfgContainer [2021-02-23 19:16:48,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 19:16:48,169 INFO L168 Benchmark]: Toolchain (without parser) took 269129.49 ms. Allocated memory was 174.1 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 149.5 MB in the beginning and 640.8 MB in the end (delta: -491.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. [2021-02-23 19:16:48,169 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 174.1 MB. Free memory is still 146.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 19:16:48,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.76 ms. Allocated memory is still 174.1 MB. Free memory was 148.3 MB in the beginning and 131.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 19:16:48,169 INFO L168 Benchmark]: Boogie Preprocessor took 73.54 ms. Allocated memory is still 174.1 MB. Free memory was 131.1 MB in the beginning and 128.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 19:16:48,169 INFO L168 Benchmark]: RCFGBuilder took 1220.91 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 128.1 MB in the beginning and 171.9 MB in the end (delta: -43.8 MB). Peak memory consumption was 37.3 MB. Max. memory is 8.0 GB. [2021-02-23 19:16:48,170 INFO L168 Benchmark]: TraceAbstraction took 267301.91 ms. Allocated memory was 209.7 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 171.4 MB in the beginning and 640.8 MB in the end (delta: -469.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. [2021-02-23 19:16:48,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 174.1 MB. Free memory is still 146.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 513.76 ms. Allocated memory is still 174.1 MB. Free memory was 148.3 MB in the beginning and 131.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.54 ms. Allocated memory is still 174.1 MB. Free memory was 131.1 MB in the beginning and 128.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1220.91 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 128.1 MB in the beginning and 171.9 MB in the end (delta: -43.8 MB). Peak memory consumption was 37.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 267301.91 ms. Allocated memory was 209.7 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 171.4 MB in the beginning and 640.8 MB in the end (delta: -469.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] msg_t nomsg = (msg_t )-1; [L25] port_t cs1 ; [L26] int8_t cs1_old ; [L27] int8_t cs1_new ; [L28] port_t cs2 ; [L29] int8_t cs2_old ; [L30] int8_t cs2_new ; [L31] port_t s1s2 ; [L32] int8_t s1s2_old ; [L33] int8_t s1s2_new ; [L34] port_t s1s1 ; [L35] int8_t s1s1_old ; [L36] int8_t s1s1_new ; [L37] port_t s2s1 ; [L38] int8_t s2s1_old ; [L39] int8_t s2s1_new ; [L40] port_t s2s2 ; [L41] int8_t s2s2_old ; [L42] int8_t s2s2_new ; [L43] port_t s1p ; [L44] int8_t s1p_old ; [L45] int8_t s1p_new ; [L46] port_t s2p ; [L47] int8_t s2p_old ; [L48] int8_t s2p_new ; [L51] _Bool side1Failed ; [L52] _Bool side2Failed ; [L53] msg_t side1_written ; [L54] msg_t side2_written ; [L60] static _Bool side1Failed_History_0 ; [L61] static _Bool side1Failed_History_1 ; [L62] static _Bool side1Failed_History_2 ; [L63] static _Bool side2Failed_History_0 ; [L64] static _Bool side2Failed_History_1 ; [L65] static _Bool side2Failed_History_2 ; [L66] static int8_t active_side_History_0 ; [L67] static int8_t active_side_History_1 ; [L68] static int8_t active_side_History_2 ; [L69] static msg_t manual_selection_History_0 ; [L70] static msg_t manual_selection_History_1 ; [L71] static msg_t manual_selection_History_2 ; [L542] int c1 ; [L543] int i2 ; [L546] c1 = 0 [L547] side1Failed = __VERIFIER_nondet_bool() [L548] side2Failed = __VERIFIER_nondet_bool() [L549] side1_written = __VERIFIER_nondet_char() [L550] side2_written = __VERIFIER_nondet_char() [L551] side1Failed_History_0 = __VERIFIER_nondet_bool() [L552] side1Failed_History_1 = __VERIFIER_nondet_bool() [L553] side1Failed_History_2 = __VERIFIER_nondet_bool() [L554] side2Failed_History_0 = __VERIFIER_nondet_bool() [L555] side2Failed_History_1 = __VERIFIER_nondet_bool() [L556] side2Failed_History_2 = __VERIFIER_nondet_bool() [L557] active_side_History_0 = __VERIFIER_nondet_char() [L558] active_side_History_1 = __VERIFIER_nondet_char() [L559] active_side_History_2 = __VERIFIER_nondet_char() [L560] manual_selection_History_0 = __VERIFIER_nondet_char() [L561] manual_selection_History_1 = __VERIFIER_nondet_char() [L562] manual_selection_History_2 = __VERIFIER_nondet_char() [L563] CALL, EXPR init() [L197] COND FALSE !((int )side1Failed_History_0 != 0) [L200] COND FALSE !((int )side2Failed_History_0 != 0) [L203] COND FALSE !((int )active_side_History_0 != -2) [L206] COND FALSE !((int )manual_selection_History_0 != 0) [L209] COND FALSE !((int )side1Failed_History_1 != 0) [L212] COND FALSE !((int )side2Failed_History_1 != 0) [L215] COND FALSE !((int )active_side_History_1 != -2) [L218] COND FALSE !((int )manual_selection_History_1 != 0) [L221] COND FALSE !((int )side1Failed_History_2 != 0) [L224] COND FALSE !((int )side2Failed_History_2 != 0) [L227] COND FALSE !((int )active_side_History_2 != -2) [L230] COND FALSE !((int )manual_selection_History_2 != 0) [L233] return (1); [L563] RET, EXPR init() [L563] i2 = init() [L564] CALL assume_abort_if_not(i2) [L58] COND FALSE !(!cond) [L564] RET assume_abort_if_not(i2) [L565] cs1_old = nomsg [L566] cs1_new = nomsg [L567] cs2_old = nomsg [L568] cs2_new = nomsg [L569] s1s2_old = nomsg [L570] s1s2_new = nomsg [L571] s1s1_old = nomsg [L572] s1s1_new = nomsg [L573] s2s1_old = nomsg [L574] s2s1_new = nomsg [L575] s2s2_old = nomsg [L576] s2s2_new = nomsg [L577] s1p_old = nomsg [L578] s1p_new = nomsg [L579] s2p_old = nomsg [L580] s2p_new = nomsg [L581] i2 = 0 [L582] COND TRUE i2 < 10 [L584] CALL Console_task_each_pals_period() [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L257] CALL write_manual_selection_history(manual_selection) [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val [L257] RET write_manual_selection_history(manual_selection) [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 [L584] RET Console_task_each_pals_period() [L585] CALL Side1_activestandby_task_each_pals_period() [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L276] CALL write_side1_failed_history(side1Failed) [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val [L276] RET write_side1_failed_history(side1Failed) [L277] COND FALSE !(\read(side1Failed)) [L284] side1 = s1s1_old [L285] s1s1_old = nomsg [L286] side2 = s2s1_old [L287] s2s1_old = nomsg [L288] manual_selection = cs1_old [L289] cs1_old = nomsg [L290] COND TRUE (int )side1 == (int )side2 [L291] next_state = (int8_t )1 [L314] EXPR next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L314] s1s1_new = next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L315] EXPR next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L315] s1s2_new = next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L316] EXPR next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L316] s1p_new = next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L317] side1_written = next_state [L585] RET Side1_activestandby_task_each_pals_period() [L586] CALL Side2_activestandby_task_each_pals_period() [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L333] CALL write_side2_failed_history(side2Failed) [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val [L333] RET write_side2_failed_history(side2Failed) [L334] COND FALSE !(\read(side2Failed)) [L341] side1 = s1s2_old [L342] s1s2_old = nomsg [L343] side2 = s2s2_old [L344] s2s2_old = nomsg [L345] manual_selection = cs2_old [L346] cs2_old = nomsg [L347] COND TRUE (int )side1 == (int )side2 [L348] next_state = (int8_t )1 [L371] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L371] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L372] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L372] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L373] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L373] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L374] side2_written = next_state [L586] RET Side2_activestandby_task_each_pals_period() [L587] CALL Pendulum_prism_task_each_pals_period() [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L386] CALL, EXPR read_active_side_history((unsigned char)0) [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); [L386] RET, EXPR read_active_side_history((unsigned char)0) [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg [L394] COND FALSE !((int )side1 == 1) [L397] COND FALSE !((int )side2 == 1) [L400] COND FALSE !((int )side1 == 0) [L408] COND TRUE (int )side1 == (int )nomsg [L409] COND FALSE !((int )side2 == 0) [L412] active_side = (int8_t )0 [L417] CALL write_active_side_history(active_side) [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val [L417] RET write_active_side_history(active_side) [L587] RET Pendulum_prism_task_each_pals_period() [L588] cs1_old = cs1_new [L589] cs1_new = nomsg [L590] cs2_old = cs2_new [L591] cs2_new = nomsg [L592] s1s2_old = s1s2_new [L593] s1s2_new = nomsg [L594] s1s1_old = s1s1_new [L595] s1s1_new = nomsg [L596] s2s1_old = s2s1_new [L597] s2s1_new = nomsg [L598] s2s2_old = s2s2_new [L599] s2s2_new = nomsg [L600] s1p_old = s1p_new [L601] s1p_new = nomsg [L602] s2p_old = s2p_new [L603] s2p_new = nomsg [L604] CALL, EXPR check() [L423] int tmp ; [L424] msg_t tmp___0 ; [L425] _Bool tmp___1 ; [L426] _Bool tmp___2 ; [L427] _Bool tmp___3 ; [L428] _Bool tmp___4 ; [L429] int8_t tmp___5 ; [L430] _Bool tmp___6 ; [L431] _Bool tmp___7 ; [L432] _Bool tmp___8 ; [L433] int8_t tmp___9 ; [L434] _Bool tmp___10 ; [L435] _Bool tmp___11 ; [L436] _Bool tmp___12 ; [L437] msg_t tmp___13 ; [L438] _Bool tmp___14 ; [L439] _Bool tmp___15 ; [L440] _Bool tmp___16 ; [L441] _Bool tmp___17 ; [L442] int8_t tmp___18 ; [L443] int8_t tmp___19 ; [L444] int8_t tmp___20 ; [L447] COND TRUE ! side1Failed [L448] tmp = 1 [L455] CALL assume_abort_if_not((_Bool )tmp) [L58] COND FALSE !(!cond) [L455] RET assume_abort_if_not((_Bool )tmp) [L456] CALL, EXPR read_manual_selection_history((unsigned char)1) [L178] COND FALSE !((int )index == 0) [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); [L456] RET, EXPR read_manual_selection_history((unsigned char)1) [L456] tmp___0 = read_manual_selection_history((unsigned char)1) [L457] COND TRUE ! tmp___0 [L458] CALL, EXPR read_side1_failed_history((unsigned char)1) [L88] COND FALSE !((int )index == 0) [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); [L458] RET, EXPR read_side1_failed_history((unsigned char)1) [L458] tmp___1 = read_side1_failed_history((unsigned char)1) [L459] COND TRUE ! tmp___1 [L460] CALL, EXPR read_side1_failed_history((unsigned char)0) [L88] COND TRUE (int )index == 0 [L89] return (side1Failed_History_0); [L460] RET, EXPR read_side1_failed_history((unsigned char)0) [L460] tmp___2 = read_side1_failed_history((unsigned char)0) [L461] COND TRUE ! tmp___2 [L462] CALL, EXPR read_side2_failed_history((unsigned char)1) [L118] COND FALSE !((int )index == 0) [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); [L462] RET, EXPR read_side2_failed_history((unsigned char)1) [L462] tmp___3 = read_side2_failed_history((unsigned char)1) [L463] COND TRUE ! tmp___3 [L464] CALL, EXPR read_side2_failed_history((unsigned char)0) [L118] COND TRUE (int )index == 0 [L119] return (side2Failed_History_0); [L464] RET, EXPR read_side2_failed_history((unsigned char)0) [L464] tmp___4 = read_side2_failed_history((unsigned char)0) [L465] COND TRUE ! tmp___4 [L466] COND FALSE !(! ((int )side1_written == 1)) [L471] COND FALSE !(! (! ((int )side1_written == 0))) [L476] COND TRUE ! (! ((int )side1_written == 1)) [L477] COND TRUE ! ((int )side2_written == 0) [L478] return (0); [L604] RET, EXPR check() [L604] c1 = check() [L605] CALL assert(c1) [L617] COND TRUE ! arg [L619] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 585 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 267.1s, OverallIterations: 26, TraceHistogramMax: 2, AutomataDifference: 219.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16426 SDtfs, 83944 SDslu, 26868 SDs, 0 SdLazy, 75314 SolverSat, 14737 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1883 GetRequests, 814 SyntacticMatches, 18 SemanticMatches, 1051 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10999 ImplicationChecksByTransitivity, 81.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6491occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 26.9s AutomataMinimizationTime, 25 MinimizatonAttempts, 5820 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...