/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.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:08:15,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:08:15,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:08:15,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:08:15,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:08:15,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:08:15,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:08:15,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:08:15,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:08:15,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:08:15,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:08:15,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:08:15,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:08:15,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:08:15,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:08:15,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:08:15,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:08:15,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:08:15,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:08:15,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:08:15,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:08:15,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:08:15,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:08:15,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:08:15,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 22:08:15,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 22:08:15,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 22:08:15,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 22:08:15,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 22:08:15,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 22:08:15,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:08:15,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:08:15,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:08:15,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:08:15,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:08:15,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:08:15,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:08:15,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:08:15,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:08:15,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:08:15,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:08:15,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:08:15,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:08:15,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:08:15,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:08:15,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:08:15,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:08:15,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:08:15,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:08:15,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:08:15,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:08:15,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:08:15,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:08:15,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:08:15,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:08:15,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:08:15,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:08:15,761 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:08:15,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:08:15,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:08:15,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:08:15,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:08:15,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:08:15,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:08:15,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:08:16,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:08:16,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:08:16,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:08:16,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:08:16,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:08:16,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-10-23 22:08:16,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164a55249/08e9d62162d445c3acd608e75d2cb824/FLAG94d560ee9 [2020-10-23 22:08:16,845 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:08:16,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-10-23 22:08:16,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164a55249/08e9d62162d445c3acd608e75d2cb824/FLAG94d560ee9 [2020-10-23 22:08:17,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164a55249/08e9d62162d445c3acd608e75d2cb824 [2020-10-23 22:08:17,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:08:17,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:08:17,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:08:17,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:08:17,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:08:17,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da19ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17, skipping insertion in model container [2020-10-23 22:08:17,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:08:17,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:08:17,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:08:17,589 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:08:17,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:08:17,679 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:08:17,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17 WrapperNode [2020-10-23 22:08:17,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:08:17,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:08:17,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:08:17,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:08:17,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (1/1) ... [2020-10-23 22:08:17,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:08:17,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:08:17,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:08:17,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:08:17,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (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 [2020-10-23 22:08:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:08:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:08:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:08:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:08:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-10-23 22:08:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-10-23 22:08:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-10-23 22:08:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-10-23 22:08:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-10-23 22:08:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-10-23 22:08:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-10-23 22:08:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-10-23 22:08:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-23 22:08:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-10-23 22:08:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-10-23 22:08:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-10-23 22:08:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-10-23 22:08:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-10-23 22:08:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-23 22:08:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:08:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-23 22:08:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:08:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:08:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:08:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:08:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-23 22:08:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-23 22:08:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-23 22:08:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-23 22:08:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-23 22:08:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:08:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-10-23 22:08:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-10-23 22:08:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-10-23 22:08:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-10-23 22:08:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-10-23 22:08:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-10-23 22:08:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-10-23 22:08:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-10-23 22:08:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-23 22:08:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-10-23 22:08:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-10-23 22:08:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-10-23 22:08:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-10-23 22:08:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-10-23 22:08:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 22:08:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:08:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:08:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:08:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:08:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:08:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:08:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:08:19,006 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:08:19,006 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 22:08:19,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:08:19 BoogieIcfgContainer [2020-10-23 22:08:19,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:08:19,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:08:19,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:08:19,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:08:19,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:08:17" (1/3) ... [2020-10-23 22:08:19,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ab8750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:08:19, skipping insertion in model container [2020-10-23 22:08:19,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:08:17" (2/3) ... [2020-10-23 22:08:19,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ab8750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:08:19, skipping insertion in model container [2020-10-23 22:08:19,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:08:19" (3/3) ... [2020-10-23 22:08:19,018 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-10-23 22:08:19,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:08:19,036 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:08:19,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:08:19,102 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:08:19,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:08:19,102 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:08:19,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:08:19,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:08:19,103 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:08:19,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:08:19,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:08:19,144 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states. [2020-10-23 22:08:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-23 22:08:19,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:08:19,205 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] [2020-10-23 22:08:19,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:08:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:08:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1022067163, now seen corresponding path program 1 times [2020-10-23 22:08:19,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:08:19,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995677389] [2020-10-23 22:08:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:08:19,328 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:08:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:19,984 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:08:19,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:08:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:08:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-23 22:08:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 22:08:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:08:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 22:08:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-23 22:08:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:08:20,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995677389] [2020-10-23 22:08:20,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:08:20,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 22:08:20,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960406512] [2020-10-23 22:08:20,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 22:08:20,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:08:20,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 22:08:20,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:08:20,512 INFO L87 Difference]: Start difference. First operand 586 states. Second operand 14 states. [2020-10-23 22:08:21,335 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-23 22:08:21,765 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-23 22:08:22,135 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-23 22:08:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:08:26,406 INFO L93 Difference]: Finished difference Result 1032 states and 1284 transitions. [2020-10-23 22:08:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 22:08:26,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 237 [2020-10-23 22:08:26,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:08:26,428 INFO L225 Difference]: With dead ends: 1032 [2020-10-23 22:08:26,428 INFO L226 Difference]: Without dead ends: 559 [2020-10-23 22:08:26,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-10-23 22:08:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-23 22:08:26,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-23 22:08:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-23 22:08:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 652 transitions. [2020-10-23 22:08:26,745 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 652 transitions. Word has length 237 [2020-10-23 22:08:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:08:26,749 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 652 transitions. [2020-10-23 22:08:26,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 22:08:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 652 transitions. [2020-10-23 22:08:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-23 22:08:26,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:08:26,761 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, 1, 1, 1, 1, 1] [2020-10-23 22:08:26,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:08:26,762 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:08:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:08:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash -405438082, now seen corresponding path program 1 times [2020-10-23 22:08:26,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:08:26,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669253157] [2020-10-23 22:08:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:08:26,784 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:08:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,188 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:08:27,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:08:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:08:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:08:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:08:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:08:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:08:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:08:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:08:27,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669253157] [2020-10-23 22:08:27,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:08:27,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 22:08:27,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786872097] [2020-10-23 22:08:27,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 22:08:27,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:08:27,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 22:08:27,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:08:27,582 INFO L87 Difference]: Start difference. First operand 559 states and 652 transitions. Second operand 11 states. [2020-10-23 22:08:27,715 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 22:08:29,569 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-23 22:08:29,805 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-23 22:08:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:08:31,604 INFO L93 Difference]: Finished difference Result 986 states and 1177 transitions. [2020-10-23 22:08:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 22:08:31,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2020-10-23 22:08:31,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:08:31,619 INFO L225 Difference]: With dead ends: 986 [2020-10-23 22:08:31,619 INFO L226 Difference]: Without dead ends: 564 [2020-10-23 22:08:31,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2020-10-23 22:08:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-23 22:08:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2020-10-23 22:08:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-23 22:08:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 656 transitions. [2020-10-23 22:08:31,800 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 656 transitions. Word has length 248 [2020-10-23 22:08:31,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:08:31,801 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 656 transitions. [2020-10-23 22:08:31,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 22:08:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 656 transitions. [2020-10-23 22:08:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-23 22:08:31,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:08:31,807 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] [2020-10-23 22:08:31,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:08:31,808 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:08:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:08:31,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1982900699, now seen corresponding path program 1 times [2020-10-23 22:08:31,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:08:31,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848214214] [2020-10-23 22:08:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:08:31,813 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:08:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,157 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:08:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:08:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:08:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:08:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:08:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:08:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:08:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:08:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 22:08:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:08:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 22:08:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-23 22:08:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 22:08:32,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848214214] [2020-10-23 22:08:32,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:08:32,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 22:08:32,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873764187] [2020-10-23 22:08:32,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 22:08:32,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:08:32,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 22:08:32,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-23 22:08:32,890 INFO L87 Difference]: Start difference. First operand 564 states and 656 transitions. Second operand 16 states. [2020-10-23 22:08:33,018 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 22:08:33,875 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-23 22:08:36,102 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-23 22:08:36,224 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 22:08:36,374 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 22:08:36,750 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-23 22:08:37,214 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-23 22:08:39,758 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-23 22:08:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:08:40,451 INFO L93 Difference]: Finished difference Result 1191 states and 1400 transitions. [2020-10-23 22:08:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-23 22:08:40,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 321 [2020-10-23 22:08:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:08:40,463 INFO L225 Difference]: With dead ends: 1191 [2020-10-23 22:08:40,463 INFO L226 Difference]: Without dead ends: 764 [2020-10-23 22:08:40,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=578, Invalid=1774, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 22:08:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-10-23 22:08:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 756. [2020-10-23 22:08:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-10-23 22:08:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 873 transitions. [2020-10-23 22:08:40,681 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 873 transitions. Word has length 321 [2020-10-23 22:08:40,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:08:40,682 INFO L481 AbstractCegarLoop]: Abstraction has 756 states and 873 transitions. [2020-10-23 22:08:40,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 22:08:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 873 transitions. [2020-10-23 22:08:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-23 22:08:40,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:08:40,688 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] [2020-10-23 22:08:40,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:08:40,689 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:08:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:08:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1772524745, now seen corresponding path program 1 times [2020-10-23 22:08:40,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:08:40,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725116373] [2020-10-23 22:08:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:08:40,694 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:08:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,009 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:08:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:08:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:08:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:08:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:08:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:08:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:08:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:08:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 22:08:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:08:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 22:08:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-23 22:08:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:08:41,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725116373] [2020-10-23 22:08:41,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:08:41,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 22:08:41,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55392146] [2020-10-23 22:08:41,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 22:08:41,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:08:41,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 22:08:41,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-23 22:08:41,590 INFO L87 Difference]: Start difference. First operand 756 states and 873 transitions. Second operand 16 states. [2020-10-23 22:08:41,845 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 22:08:42,661 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-23 22:08:45,079 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 22:08:45,227 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 22:08:45,369 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 22:08:45,520 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 22:08:45,733 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-23 22:08:46,367 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-23 22:08:48,727 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 22:08:48,851 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-23 22:08:49,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:08:49,529 INFO L93 Difference]: Finished difference Result 1199 states and 1410 transitions. [2020-10-23 22:08:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-23 22:08:49,530 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 322 [2020-10-23 22:08:49,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:08:49,536 INFO L225 Difference]: With dead ends: 1199 [2020-10-23 22:08:49,537 INFO L226 Difference]: Without dead ends: 769 [2020-10-23 22:08:49,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=606, Invalid=2046, Unknown=0, NotChecked=0, Total=2652 [2020-10-23 22:08:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-23 22:08:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 756. [2020-10-23 22:08:49,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-10-23 22:08:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 873 transitions. [2020-10-23 22:08:49,719 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 873 transitions. Word has length 322 [2020-10-23 22:08:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:08:49,720 INFO L481 AbstractCegarLoop]: Abstraction has 756 states and 873 transitions. [2020-10-23 22:08:49,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 22:08:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 873 transitions. [2020-10-23 22:08:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-23 22:08:49,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:08:49,727 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] [2020-10-23 22:08:49,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:08:49,727 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:08:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:08:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1122853661, now seen corresponding path program 1 times [2020-10-23 22:08:49,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:08:49,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404917222] [2020-10-23 22:08:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:08:49,733 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:08:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,027 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:08:50,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:08:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:08:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:08:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:08:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:08:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:08:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:08:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 22:08:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:08:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:08:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-10-23 22:08:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:08:50,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404917222] [2020-10-23 22:08:50,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:08:50,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 22:08:50,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220515806] [2020-10-23 22:08:50,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 22:08:50,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:08:50,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 22:08:50,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-23 22:08:50,427 INFO L87 Difference]: Start difference. First operand 756 states and 873 transitions. Second operand 12 states. [2020-10-23 22:08:50,542 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 22:08:52,257 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-23 22:08:53,570 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-23 22:08:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:08:56,881 INFO L93 Difference]: Finished difference Result 1644 states and 1949 transitions. [2020-10-23 22:08:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-23 22:08:56,882 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 324 [2020-10-23 22:08:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:08:56,894 INFO L225 Difference]: With dead ends: 1644 [2020-10-23 22:08:56,894 INFO L226 Difference]: Without dead ends: 1214 [2020-10-23 22:08:56,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 22:08:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2020-10-23 22:08:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1174. [2020-10-23 22:08:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-10-23 22:08:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1382 transitions. [2020-10-23 22:08:57,262 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1382 transitions. Word has length 324 [2020-10-23 22:08:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:08:57,263 INFO L481 AbstractCegarLoop]: Abstraction has 1174 states and 1382 transitions. [2020-10-23 22:08:57,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 22:08:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1382 transitions. [2020-10-23 22:08:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-23 22:08:57,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:08:57,272 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] [2020-10-23 22:08:57,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:08:57,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:08:57,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:08:57,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1466483583, now seen corresponding path program 1 times [2020-10-23 22:08:57,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:08:57,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421097129] [2020-10-23 22:08:57,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:08:57,278 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:08:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,601 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:08:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:08:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:08:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:08:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:08:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:08:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:08:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:08:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:08:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 22:08:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:08:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:08:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 22:08:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:08:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:08:58,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421097129] [2020-10-23 22:08:58,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:08:58,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 22:08:58,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083652907] [2020-10-23 22:08:58,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 22:08:58,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:08:58,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 22:08:58,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-23 22:08:58,013 INFO L87 Difference]: Start difference. First operand 1174 states and 1382 transitions. Second operand 12 states. [2020-10-23 22:09:00,788 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-23 22:09:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:05,028 INFO L93 Difference]: Finished difference Result 2590 states and 3128 transitions. [2020-10-23 22:09:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-23 22:09:05,029 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 325 [2020-10-23 22:09:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:05,042 INFO L225 Difference]: With dead ends: 2590 [2020-10-23 22:09:05,043 INFO L226 Difference]: Without dead ends: 1832 [2020-10-23 22:09:05,047 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 [2020-10-23 22:09:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-10-23 22:09:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1811. [2020-10-23 22:09:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-10-23 22:09:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2172 transitions. [2020-10-23 22:09:05,588 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2172 transitions. Word has length 325 [2020-10-23 22:09:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:05,589 INFO L481 AbstractCegarLoop]: Abstraction has 1811 states and 2172 transitions. [2020-10-23 22:09:05,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 22:09:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2172 transitions. [2020-10-23 22:09:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-23 22:09:05,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:05,594 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] [2020-10-23 22:09:05,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:09:05,595 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:05,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1061842977, now seen corresponding path program 1 times [2020-10-23 22:09:05,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:05,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146362786] [2020-10-23 22:09:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:05,599 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:05,968 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:09:05,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:09:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:05,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:09:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:09:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:09:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:09:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:09:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 22:09:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:09:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:09:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 22:09:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:06,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146362786] [2020-10-23 22:09:06,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:06,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 22:09:06,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894066423] [2020-10-23 22:09:06,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 22:09:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:06,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 22:09:06,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:09:06,296 INFO L87 Difference]: Start difference. First operand 1811 states and 2172 transitions. Second operand 13 states. [2020-10-23 22:09:06,418 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 22:09:09,316 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-23 22:09:09,576 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-23 22:09:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:11,253 INFO L93 Difference]: Finished difference Result 3204 states and 3903 transitions. [2020-10-23 22:09:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 22:09:11,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 325 [2020-10-23 22:09:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:11,264 INFO L225 Difference]: With dead ends: 3204 [2020-10-23 22:09:11,264 INFO L226 Difference]: Without dead ends: 1835 [2020-10-23 22:09:11,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-10-23 22:09:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-10-23 22:09:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1835. [2020-10-23 22:09:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2020-10-23 22:09:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2192 transitions. [2020-10-23 22:09:11,763 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2192 transitions. Word has length 325 [2020-10-23 22:09:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:11,764 INFO L481 AbstractCegarLoop]: Abstraction has 1835 states and 2192 transitions. [2020-10-23 22:09:11,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 22:09:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2192 transitions. [2020-10-23 22:09:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-23 22:09:11,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:11,768 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] [2020-10-23 22:09:11,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:09:11,769 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:11,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2109261025, now seen corresponding path program 1 times [2020-10-23 22:09:11,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:11,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297641227] [2020-10-23 22:09:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:11,773 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,087 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:09:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:09:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:09:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:09:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:09:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:09:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:09:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 22:09:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:09:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:09:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 22:09:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-23 22:09:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:12,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297641227] [2020-10-23 22:09:12,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:12,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 22:09:12,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089384042] [2020-10-23 22:09:12,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 22:09:12,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 22:09:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:09:12,474 INFO L87 Difference]: Start difference. First operand 1835 states and 2192 transitions. Second operand 13 states. [2020-10-23 22:09:15,578 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-23 22:09:15,851 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-23 22:09:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:17,432 INFO L93 Difference]: Finished difference Result 3252 states and 3955 transitions. [2020-10-23 22:09:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 22:09:17,433 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 336 [2020-10-23 22:09:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:17,444 INFO L225 Difference]: With dead ends: 3252 [2020-10-23 22:09:17,444 INFO L226 Difference]: Without dead ends: 1859 [2020-10-23 22:09:17,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-10-23 22:09:17,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2020-10-23 22:09:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1859. [2020-10-23 22:09:18,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1859 states. [2020-10-23 22:09:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2212 transitions. [2020-10-23 22:09:18,090 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2212 transitions. Word has length 336 [2020-10-23 22:09:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:18,091 INFO L481 AbstractCegarLoop]: Abstraction has 1859 states and 2212 transitions. [2020-10-23 22:09:18,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 22:09:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2212 transitions. [2020-10-23 22:09:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-23 22:09:18,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:18,096 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] [2020-10-23 22:09:18,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 22:09:18,097 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:18,097 INFO L82 PathProgramCache]: Analyzing trace with hash -795815502, now seen corresponding path program 1 times [2020-10-23 22:09:18,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:18,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109659813] [2020-10-23 22:09:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:18,101 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,396 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:09:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:09:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:09:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:09:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:09:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:09:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:09:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 22:09:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:09:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:09:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 22:09:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-23 22:09:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 22:09:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:18,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109659813] [2020-10-23 22:09:18,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:18,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 22:09:18,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806712170] [2020-10-23 22:09:18,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 22:09:18,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:18,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 22:09:18,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:09:18,791 INFO L87 Difference]: Start difference. First operand 1859 states and 2212 transitions. Second operand 13 states. [2020-10-23 22:09:21,968 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-23 22:09:22,217 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-23 22:09:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:23,705 INFO L93 Difference]: Finished difference Result 3296 states and 3979 transitions. [2020-10-23 22:09:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 22:09:23,705 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 346 [2020-10-23 22:09:23,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:23,715 INFO L225 Difference]: With dead ends: 3296 [2020-10-23 22:09:23,715 INFO L226 Difference]: Without dead ends: 1879 [2020-10-23 22:09:23,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-10-23 22:09:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-23 22:09:24,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1879. [2020-10-23 22:09:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2020-10-23 22:09:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2228 transitions. [2020-10-23 22:09:24,203 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2228 transitions. Word has length 346 [2020-10-23 22:09:24,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:24,204 INFO L481 AbstractCegarLoop]: Abstraction has 1879 states and 2228 transitions. [2020-10-23 22:09:24,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 22:09:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2228 transitions. [2020-10-23 22:09:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-23 22:09:24,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:24,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:09:24,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 22:09:24,209 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:24,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:24,210 INFO L82 PathProgramCache]: Analyzing trace with hash 850885284, now seen corresponding path program 1 times [2020-10-23 22:09:24,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:24,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970821439] [2020-10-23 22:09:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:24,214 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,503 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:09:24,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:09:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:09:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:09:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:09:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:09:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:09:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 22:09:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:09:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:09:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 22:09:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-23 22:09:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 22:09:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:24,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970821439] [2020-10-23 22:09:24,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:24,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 22:09:24,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381544886] [2020-10-23 22:09:24,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 22:09:24,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:24,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 22:09:24,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-23 22:09:24,949 INFO L87 Difference]: Start difference. First operand 1879 states and 2228 transitions. Second operand 12 states. [2020-10-23 22:09:25,822 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-23 22:09:28,090 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 22:09:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:31,450 INFO L93 Difference]: Finished difference Result 3345 states and 4007 transitions. [2020-10-23 22:09:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-23 22:09:31,451 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 354 [2020-10-23 22:09:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:31,461 INFO L225 Difference]: With dead ends: 3345 [2020-10-23 22:09:31,462 INFO L226 Difference]: Without dead ends: 1908 [2020-10-23 22:09:31,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=352, Invalid=980, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 22:09:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-23 22:09:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1887. [2020-10-23 22:09:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-10-23 22:09:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2233 transitions. [2020-10-23 22:09:31,932 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2233 transitions. Word has length 354 [2020-10-23 22:09:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:31,933 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2233 transitions. [2020-10-23 22:09:31,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 22:09:31,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2233 transitions. [2020-10-23 22:09:31,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-23 22:09:31,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:31,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:09:31,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 22:09:31,937 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:31,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:31,938 INFO L82 PathProgramCache]: Analyzing trace with hash 560706686, now seen corresponding path program 1 times [2020-10-23 22:09:31,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:31,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977279178] [2020-10-23 22:09:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:31,942 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,242 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:09:32,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:09:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:09:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:09:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:09:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:09:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-23 22:09:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-23 22:09:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:09:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:09:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-23 22:09:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-23 22:09:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-23 22:09:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:32,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977279178] [2020-10-23 22:09:32,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:32,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 22:09:32,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075331633] [2020-10-23 22:09:32,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 22:09:32,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:32,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 22:09:32,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-23 22:09:32,717 INFO L87 Difference]: Start difference. First operand 1887 states and 2233 transitions. Second operand 12 states. [2020-10-23 22:09:33,584 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-23 22:09:36,173 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 22:09:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:39,151 INFO L93 Difference]: Finished difference Result 3401 states and 4061 transitions. [2020-10-23 22:09:39,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-23 22:09:39,152 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 354 [2020-10-23 22:09:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:39,162 INFO L225 Difference]: With dead ends: 3401 [2020-10-23 22:09:39,162 INFO L226 Difference]: Without dead ends: 1964 [2020-10-23 22:09:39,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=351, Invalid=981, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 22:09:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-10-23 22:09:39,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1887. [2020-10-23 22:09:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-10-23 22:09:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2229 transitions. [2020-10-23 22:09:39,650 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2229 transitions. Word has length 354 [2020-10-23 22:09:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:39,651 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2229 transitions. [2020-10-23 22:09:39,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 22:09:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2229 transitions. [2020-10-23 22:09:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-23 22:09:39,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:39,655 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, 1, 1, 1, 1, 1] [2020-10-23 22:09:39,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 22:09:39,655 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:39,656 INFO L82 PathProgramCache]: Analyzing trace with hash 116085937, now seen corresponding path program 1 times [2020-10-23 22:09:39,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:39,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539720544] [2020-10-23 22:09:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:39,660 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:39,971 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:09:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-23 22:09:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 22:09:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 22:09:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 22:09:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-23 22:09:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 22:09:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 22:09:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-23 22:09:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 22:09:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:09:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-23 22:09:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-23 22:09:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-23 22:09:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:40,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539720544] [2020-10-23 22:09:40,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:40,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 22:09:40,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588690626] [2020-10-23 22:09:40,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 22:09:40,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:40,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 22:09:40,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:09:40,339 INFO L87 Difference]: Start difference. First operand 1887 states and 2229 transitions. Second operand 13 states. [2020-10-23 22:09:40,461 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-23 22:09:44,092 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-23 22:09:44,349 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-23 22:09:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:45,762 INFO L93 Difference]: Finished difference Result 3348 states and 4017 transitions. [2020-10-23 22:09:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 22:09:45,763 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 346 [2020-10-23 22:09:45,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:45,773 INFO L225 Difference]: With dead ends: 3348 [2020-10-23 22:09:45,773 INFO L226 Difference]: Without dead ends: 1911 [2020-10-23 22:09:45,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-10-23 22:09:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-10-23 22:09:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1911. [2020-10-23 22:09:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1911 states. [2020-10-23 22:09:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2249 transitions. [2020-10-23 22:09:46,260 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2249 transitions. Word has length 346 [2020-10-23 22:09:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:46,261 INFO L481 AbstractCegarLoop]: Abstraction has 1911 states and 2249 transitions. [2020-10-23 22:09:46,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 22:09:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2249 transitions. [2020-10-23 22:09:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-23 22:09:46,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:46,264 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, 1, 1, 1, 1, 1] [2020-10-23 22:09:46,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 22:09:46,265 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:46,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1444765783, now seen corresponding path program 1 times [2020-10-23 22:09:46,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:46,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442521625] [2020-10-23 22:09:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:46,269 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 22:09:46,274 INFO L168 Benchmark]: Toolchain (without parser) took 89096.10 ms. Allocated memory was 151.0 MB in the beginning and 979.4 MB in the end (delta: 828.4 MB). Free memory was 126.1 MB in the beginning and 809.4 MB in the end (delta: -683.4 MB). Peak memory consumption was 146.3 MB. Max. memory is 8.0 GB. [2020-10-23 22:09:46,274 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:09:46,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 108.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-23 22:09:46,276 INFO L168 Benchmark]: Boogie Preprocessor took 73.15 ms. Allocated memory is still 151.0 MB. Free memory was 108.0 MB in the beginning and 105.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:09:46,276 INFO L168 Benchmark]: RCFGBuilder took 1254.17 ms. Allocated memory is still 151.0 MB. Free memory was 105.0 MB in the beginning and 51.9 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2020-10-23 22:09:46,277 INFO L168 Benchmark]: TraceAbstraction took 87261.08 ms. Allocated memory was 151.0 MB in the beginning and 979.4 MB in the end (delta: 828.4 MB). Free memory was 51.3 MB in the beginning and 809.4 MB in the end (delta: -758.1 MB). Peak memory consumption was 71.8 MB. Max. memory is 8.0 GB. [2020-10-23 22:09:46,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 493.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 108.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.15 ms. Allocated memory is still 151.0 MB. Free memory was 108.0 MB in the beginning and 105.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1254.17 ms. Allocated memory is still 151.0 MB. Free memory was 105.0 MB in the beginning and 51.9 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 87261.08 ms. Allocated memory was 151.0 MB in the beginning and 979.4 MB in the end (delta: 828.4 MB). Free memory was 51.3 MB in the beginning and 809.4 MB in the end (delta: -758.1 MB). Peak memory consumption was 71.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...