/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:21:55,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:21:55,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:21:55,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:21:55,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:21:55,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:21:55,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:21:55,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:21:55,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:21:55,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:21:55,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:21:55,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:21:55,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:21:55,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:21:55,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:21:55,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:21:55,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:21:55,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:21:55,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:21:55,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:21:55,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:21:55,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:21:55,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:21:55,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:21:55,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 02:21:55,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 02:21:55,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 02:21:55,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 02:21:55,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 02:21:55,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 02:21:55,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:21:55,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:21:55,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:21:55,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:21:55,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:21:55,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:21:55,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:21:55,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:21:55,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:21:55,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:21:55,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:21:55,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:21:55,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:21:55,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:21:55,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:21:55,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:21:55,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:21:55,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:21:55,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:21:55,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:21:55,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:21:55,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:21:55,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:21:55,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:21:55,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:21:55,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:21:55,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:21:55,180 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:21:55,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:21:55,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:21:55,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:21:55,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:21:55,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:21:55,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:21:55,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:21:55,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:21:55,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:21:55,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:21:55,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:21:55,656 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:21:55,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-11-07 02:21:55,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb51b9243/2dab1d92493b418398a25975d6642a6c/FLAG462ecd03a [2020-11-07 02:21:56,609 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:21:56,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-11-07 02:21:56,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb51b9243/2dab1d92493b418398a25975d6642a6c/FLAG462ecd03a [2020-11-07 02:21:56,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb51b9243/2dab1d92493b418398a25975d6642a6c [2020-11-07 02:21:56,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:21:56,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:21:56,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:21:56,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:21:56,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:21:56,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:56" (1/1) ... [2020-11-07 02:21:56,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7de6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:56, skipping insertion in model container [2020-11-07 02:21:56,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:56" (1/1) ... [2020-11-07 02:21:56,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:21:56,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:21:57,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:21:57,295 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:21:57,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:21:57,413 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:21:57,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57 WrapperNode [2020-11-07 02:21:57,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:21:57,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:21:57,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:21:57,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:21:57,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (1/1) ... [2020-11-07 02:21:57,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (1/1) ... [2020-11-07 02:21:57,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (1/1) ... [2020-11-07 02:21:57,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (1/1) ... [2020-11-07 02:21:57,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (1/1) ... [2020-11-07 02:21:57,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (1/1) ... [2020-11-07 02:21:57,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (1/1) ... [2020-11-07 02:21:57,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:21:57,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:21:57,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:21:57,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:21:57,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (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 [2020-11-07 02:21:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:21:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:21:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:21:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:21:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-11-07 02:21:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-11-07 02:21:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-11-07 02:21:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-11-07 02:21:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-11-07 02:21:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-11-07 02:21:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-11-07 02:21:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-11-07 02:21:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-11-07 02:21:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-11-07 02:21:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-11-07 02:21:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-11-07 02:21:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-11-07 02:21:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-11-07 02:21:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-11-07 02:21:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:21:57,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-11-07 02:21:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:21:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:21:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:21:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:21:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-07 02:21:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 02:21:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-11-07 02:21:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-11-07 02:21:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-11-07 02:21:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:21:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-11-07 02:21:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-11-07 02:21:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-11-07 02:21:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-11-07 02:21:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-11-07 02:21:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-11-07 02:21:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-11-07 02:21:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-11-07 02:21:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-11-07 02:21:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-11-07 02:21:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-11-07 02:21:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-11-07 02:21:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-11-07 02:21:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-11-07 02:21:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 02:21:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:21:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:21:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:21:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:21:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:21:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:21:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:21:58,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:21:58,998 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:21:59,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:21:59 BoogieIcfgContainer [2020-11-07 02:21:59,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:21:59,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:21:59,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:21:59,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:21:59,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:21:56" (1/3) ... [2020-11-07 02:21:59,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f72915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:21:59, skipping insertion in model container [2020-11-07 02:21:59,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:57" (2/3) ... [2020-11-07 02:21:59,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f72915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:21:59, skipping insertion in model container [2020-11-07 02:21:59,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:21:59" (3/3) ... [2020-11-07 02:21:59,017 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-11-07 02:21:59,035 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:21:59,040 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:21:59,053 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:21:59,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:21:59,081 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:21:59,081 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:21:59,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:21:59,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:21:59,082 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:21:59,082 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:21:59,082 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:21:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states. [2020-11-07 02:21:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-11-07 02:21:59,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:21:59,146 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] [2020-11-07 02:21:59,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:21:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:21:59,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2105785713, now seen corresponding path program 1 times [2020-11-07 02:21:59,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:21:59,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881891274] [2020-11-07 02:21:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:21:59,262 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:21:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:59,969 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:21:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:21:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:22:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-11-07 02:22:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 02:22:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:22:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-11-07 02:22:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-11-07 02:22:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:22:00,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881891274] [2020-11-07 02:22:00,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:22:00,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 02:22:00,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132418771] [2020-11-07 02:22:00,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 02:22:00,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:22:00,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 02:22:00,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-11-07 02:22:00,598 INFO L87 Difference]: Start difference. First operand 589 states. Second operand 14 states. [2020-11-07 02:22:01,613 WARN L194 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:22:02,150 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:22:02,508 WARN L194 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:22:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:22:07,511 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-11-07 02:22:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 02:22:07,513 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 237 [2020-11-07 02:22:07,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:22:07,552 INFO L225 Difference]: With dead ends: 1071 [2020-11-07 02:22:07,553 INFO L226 Difference]: Without dead ends: 590 [2020-11-07 02:22:07,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-11-07 02:22:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-11-07 02:22:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 562. [2020-11-07 02:22:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-11-07 02:22:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 655 transitions. [2020-11-07 02:22:07,844 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 655 transitions. Word has length 237 [2020-11-07 02:22:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:22:07,846 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 655 transitions. [2020-11-07 02:22:07,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 02:22:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 655 transitions. [2020-11-07 02:22:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-11-07 02:22:07,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:22:07,855 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] [2020-11-07 02:22:07,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:22:07,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:22:07,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:22:07,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1381934463, now seen corresponding path program 1 times [2020-11-07 02:22:07,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:22:07,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349311476] [2020-11-07 02:22:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:22:07,863 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:22:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,425 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:22:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:22:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:22:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:22:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:22:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:22:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:22:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:22:08,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349311476] [2020-11-07 02:22:08,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:22:08,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:22:08,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754569334] [2020-11-07 02:22:08,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:22:08,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:22:08,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:22:08,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:22:08,793 INFO L87 Difference]: Start difference. First operand 562 states and 655 transitions. Second operand 11 states. [2020-11-07 02:22:11,654 WARN L194 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:22:11,944 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:22:14,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:22:14,035 INFO L93 Difference]: Finished difference Result 992 states and 1183 transitions. [2020-11-07 02:22:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 02:22:14,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2020-11-07 02:22:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:22:14,042 INFO L225 Difference]: With dead ends: 992 [2020-11-07 02:22:14,042 INFO L226 Difference]: Without dead ends: 567 [2020-11-07 02:22:14,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2020-11-07 02:22:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-11-07 02:22:14,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2020-11-07 02:22:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-11-07 02:22:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 659 transitions. [2020-11-07 02:22:14,228 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 659 transitions. Word has length 248 [2020-11-07 02:22:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:22:14,229 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 659 transitions. [2020-11-07 02:22:14,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:22:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 659 transitions. [2020-11-07 02:22:14,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-11-07 02:22:14,236 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:22:14,237 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] [2020-11-07 02:22:14,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:22:14,237 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:22:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:22:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash -978002696, now seen corresponding path program 1 times [2020-11-07 02:22:14,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:22:14,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566374087] [2020-11-07 02:22:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:22:14,243 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:22:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:14,735 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:22:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:22:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:22:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:22:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:22:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:14,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:22:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:14,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:22:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:15,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:15,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:22:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:15,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-07 02:22:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-11-07 02:22:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 02:22:15,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566374087] [2020-11-07 02:22:15,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:22:15,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 02:22:15,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647602376] [2020-11-07 02:22:15,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 02:22:15,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:22:15,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 02:22:15,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-11-07 02:22:15,420 INFO L87 Difference]: Start difference. First operand 567 states and 659 transitions. Second operand 16 states. [2020-11-07 02:22:15,546 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:22:15,716 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:22:16,623 WARN L194 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:22:19,393 WARN L194 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:22:19,535 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:22:19,689 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:22:19,920 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:22:20,100 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:22:20,638 WARN L194 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:22:23,571 WARN L194 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:22:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:22:24,381 INFO L93 Difference]: Finished difference Result 1197 states and 1406 transitions. [2020-11-07 02:22:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 02:22:24,389 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 321 [2020-11-07 02:22:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:22:24,399 INFO L225 Difference]: With dead ends: 1197 [2020-11-07 02:22:24,400 INFO L226 Difference]: Without dead ends: 767 [2020-11-07 02:22:24,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=578, Invalid=1774, Unknown=0, NotChecked=0, Total=2352 [2020-11-07 02:22:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-11-07 02:22:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 759. [2020-11-07 02:22:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-11-07 02:22:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 876 transitions. [2020-11-07 02:22:24,655 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 876 transitions. Word has length 321 [2020-11-07 02:22:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:22:24,656 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 876 transitions. [2020-11-07 02:22:24,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 02:22:24,657 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 876 transitions. [2020-11-07 02:22:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-11-07 02:22:24,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:22:24,665 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] [2020-11-07 02:22:24,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:22:24,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:22:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:22:24,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2072695025, now seen corresponding path program 1 times [2020-11-07 02:22:24,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:22:24,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370210885] [2020-11-07 02:22:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:22:24,673 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:22:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,127 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:22:25,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:22:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:22:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:22:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:22:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:22:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:22:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:22:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 02:22:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 02:22:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:22:25,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370210885] [2020-11-07 02:22:25,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:22:25,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 02:22:25,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72298489] [2020-11-07 02:22:25,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 02:22:25,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:22:25,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 02:22:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-11-07 02:22:25,950 INFO L87 Difference]: Start difference. First operand 759 states and 876 transitions. Second operand 16 states. [2020-11-07 02:22:26,088 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:22:26,246 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:22:27,123 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:22:28,186 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:22:30,134 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:22:30,289 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:22:30,441 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:22:30,591 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:22:30,776 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:22:30,956 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:22:31,100 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:22:31,496 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:22:34,166 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:22:34,302 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:22:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:22:35,097 INFO L93 Difference]: Finished difference Result 1205 states and 1416 transitions. [2020-11-07 02:22:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 02:22:35,098 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 322 [2020-11-07 02:22:35,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:22:35,106 INFO L225 Difference]: With dead ends: 1205 [2020-11-07 02:22:35,106 INFO L226 Difference]: Without dead ends: 772 [2020-11-07 02:22:35,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=606, Invalid=2046, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 02:22:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-11-07 02:22:35,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 759. [2020-11-07 02:22:35,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-11-07 02:22:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 876 transitions. [2020-11-07 02:22:35,297 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 876 transitions. Word has length 322 [2020-11-07 02:22:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:22:35,298 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 876 transitions. [2020-11-07 02:22:35,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 02:22:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 876 transitions. [2020-11-07 02:22:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-11-07 02:22:35,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:22:35,305 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] [2020-11-07 02:22:35,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:22:35,305 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:22:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:22:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash 504085571, now seen corresponding path program 1 times [2020-11-07 02:22:35,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:22:35,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385110449] [2020-11-07 02:22:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:22:35,311 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:22:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,657 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:22:35,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:22:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:22:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:22:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:22:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:22:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:22:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:22:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:22:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 02:22:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:22:36,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385110449] [2020-11-07 02:22:36,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:22:36,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:22:36,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875014627] [2020-11-07 02:22:36,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:22:36,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:22:36,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:22:36,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:22:36,197 INFO L87 Difference]: Start difference. First operand 759 states and 876 transitions. Second operand 12 states. [2020-11-07 02:22:36,335 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:22:38,658 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:22:40,176 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:22:40,432 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:22:40,596 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:22:42,241 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:22:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:22:43,937 INFO L93 Difference]: Finished difference Result 1653 states and 1958 transitions. [2020-11-07 02:22:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-07 02:22:43,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 324 [2020-11-07 02:22:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:22:43,950 INFO L225 Difference]: With dead ends: 1653 [2020-11-07 02:22:43,950 INFO L226 Difference]: Without dead ends: 1220 [2020-11-07 02:22:43,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 02:22:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-11-07 02:22:44,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1177. [2020-11-07 02:22:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-11-07 02:22:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1385 transitions. [2020-11-07 02:22:44,419 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1385 transitions. Word has length 324 [2020-11-07 02:22:44,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:22:44,420 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 1385 transitions. [2020-11-07 02:22:44,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:22:44,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1385 transitions. [2020-11-07 02:22:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-11-07 02:22:44,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:22:44,430 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] [2020-11-07 02:22:44,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:22:44,430 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:22:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:22:44,431 INFO L82 PathProgramCache]: Analyzing trace with hash 151114232, now seen corresponding path program 1 times [2020-11-07 02:22:44,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:22:44,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651909337] [2020-11-07 02:22:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:22:44,436 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:22:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:44,812 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:22:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:44,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:22:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:44,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:22:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:44,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:22:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:22:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:44,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:22:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:22:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:22:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:22:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-11-07 02:22:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:22:45,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651909337] [2020-11-07 02:22:45,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:22:45,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:22:45,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985961194] [2020-11-07 02:22:45,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:22:45,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:22:45,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:22:45,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:22:45,292 INFO L87 Difference]: Start difference. First operand 1177 states and 1385 transitions. Second operand 12 states. [2020-11-07 02:22:45,425 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:22:48,179 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:22:48,520 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:22:48,903 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:22:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:22:52,925 INFO L93 Difference]: Finished difference Result 2599 states and 3137 transitions. [2020-11-07 02:22:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-07 02:22:52,926 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 325 [2020-11-07 02:22:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:22:52,940 INFO L225 Difference]: With dead ends: 2599 [2020-11-07 02:22:52,941 INFO L226 Difference]: Without dead ends: 1838 [2020-11-07 02:22:52,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 02:22:52,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-11-07 02:22:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1817. [2020-11-07 02:22:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2020-11-07 02:22:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2178 transitions. [2020-11-07 02:22:53,552 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2178 transitions. Word has length 325 [2020-11-07 02:22:53,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:22:53,554 INFO L481 AbstractCegarLoop]: Abstraction has 1817 states and 2178 transitions. [2020-11-07 02:22:53,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:22:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2178 transitions. [2020-11-07 02:22:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-11-07 02:22:53,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:22:53,558 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] [2020-11-07 02:22:53,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:22:53,559 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:22:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:22:53,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1615526504, now seen corresponding path program 1 times [2020-11-07 02:22:53,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:22:53,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760217754] [2020-11-07 02:22:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:22:53,564 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:22:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:53,970 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:22:53,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:22:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:22:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:22:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:22:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:22:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:22:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:22:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:22:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:22:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-11-07 02:22:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:22:54,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760217754] [2020-11-07 02:22:54,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:22:54,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:22:54,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652933084] [2020-11-07 02:22:54,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:22:54,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:22:54,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:22:54,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:22:54,380 INFO L87 Difference]: Start difference. First operand 1817 states and 2178 transitions. Second operand 13 states. [2020-11-07 02:22:57,224 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:22:57,968 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:22:58,235 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:23:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:23:00,194 INFO L93 Difference]: Finished difference Result 3216 states and 3915 transitions. [2020-11-07 02:23:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:23:00,196 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 325 [2020-11-07 02:23:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:23:00,209 INFO L225 Difference]: With dead ends: 3216 [2020-11-07 02:23:00,209 INFO L226 Difference]: Without dead ends: 1841 [2020-11-07 02:23:00,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-11-07 02:23:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-11-07 02:23:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1841. [2020-11-07 02:23:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2020-11-07 02:23:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2198 transitions. [2020-11-07 02:23:00,835 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2198 transitions. Word has length 325 [2020-11-07 02:23:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:23:00,836 INFO L481 AbstractCegarLoop]: Abstraction has 1841 states and 2198 transitions. [2020-11-07 02:23:00,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:23:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2198 transitions. [2020-11-07 02:23:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-11-07 02:23:00,840 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:23:00,841 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] [2020-11-07 02:23:00,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:23:00,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:23:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:23:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1649550646, now seen corresponding path program 1 times [2020-11-07 02:23:00,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:23:00,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788394867] [2020-11-07 02:23:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:23:00,846 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:23:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,182 WARN L194 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:23:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:23:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:23:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:23:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:23:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:23:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:23:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-11-07 02:23:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 02:23:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:23:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-11-07 02:23:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 02:23:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:23:01,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788394867] [2020-11-07 02:23:01,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:01,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:23:01,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103271462] [2020-11-07 02:23:01,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:23:01,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:01,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:23:01,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:23:01,607 INFO L87 Difference]: Start difference. First operand 1841 states and 2198 transitions. Second operand 12 states. [2020-11-07 02:23:01,743 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:02,553 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:23:05,365 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:07,009 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-11-07 02:23:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:23:08,717 INFO L93 Difference]: Finished difference Result 3323 states and 4005 transitions. [2020-11-07 02:23:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-07 02:23:08,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 344 [2020-11-07 02:23:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:23:08,730 INFO L225 Difference]: With dead ends: 3323 [2020-11-07 02:23:08,730 INFO L226 Difference]: Without dead ends: 1924 [2020-11-07 02:23:08,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=351, Invalid=981, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 02:23:08,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-11-07 02:23:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1841. [2020-11-07 02:23:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2020-11-07 02:23:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2193 transitions. [2020-11-07 02:23:09,424 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2193 transitions. Word has length 344 [2020-11-07 02:23:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:23:09,425 INFO L481 AbstractCegarLoop]: Abstraction has 1841 states and 2193 transitions. [2020-11-07 02:23:09,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:23:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2193 transitions. [2020-11-07 02:23:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-11-07 02:23:09,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:23:09,430 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] [2020-11-07 02:23:09,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 02:23:09,430 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:23:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:23:09,431 INFO L82 PathProgramCache]: Analyzing trace with hash 603163689, now seen corresponding path program 1 times [2020-11-07 02:23:09,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:23:09,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182715667] [2020-11-07 02:23:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:23:09,434 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:23:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:09,801 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:23:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:23:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:09,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:23:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:09,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:23:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:09,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:23:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:23:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:09,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:23:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:09,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:23:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:10,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:10,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:23:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:23:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-11-07 02:23:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:10,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 02:23:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:23:10,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182715667] [2020-11-07 02:23:10,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:10,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:23:10,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292921978] [2020-11-07 02:23:10,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:23:10,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:10,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:23:10,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:23:10,169 INFO L87 Difference]: Start difference. First operand 1841 states and 2193 transitions. Second operand 13 states. [2020-11-07 02:23:10,293 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:14,296 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:23:14,593 WARN L194 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:23:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:23:16,209 INFO L93 Difference]: Finished difference Result 3264 states and 3954 transitions. [2020-11-07 02:23:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:23:16,210 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 336 [2020-11-07 02:23:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:23:16,221 INFO L225 Difference]: With dead ends: 3264 [2020-11-07 02:23:16,222 INFO L226 Difference]: Without dead ends: 1865 [2020-11-07 02:23:16,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-11-07 02:23:16,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2020-11-07 02:23:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1865. [2020-11-07 02:23:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2020-11-07 02:23:16,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2213 transitions. [2020-11-07 02:23:16,721 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2213 transitions. Word has length 336 [2020-11-07 02:23:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:23:16,722 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 2213 transitions. [2020-11-07 02:23:16,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:23:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2213 transitions. [2020-11-07 02:23:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-11-07 02:23:16,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:23:16,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:23:16,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 02:23:16,728 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:23:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:23:16,728 INFO L82 PathProgramCache]: Analyzing trace with hash -338785427, now seen corresponding path program 1 times [2020-11-07 02:23:16,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:23:16,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399848097] [2020-11-07 02:23:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:23:16,732 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:23:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,033 WARN L194 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:23:17,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:23:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:23:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:23:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:23:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:23:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:23:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:23:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 02:23:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:23:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-11-07 02:23:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 02:23:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-11-07 02:23:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:23:17,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399848097] [2020-11-07 02:23:17,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:17,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:23:17,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424107554] [2020-11-07 02:23:17,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:23:17,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:17,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:23:17,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:23:17,540 INFO L87 Difference]: Start difference. First operand 1865 states and 2213 transitions. Second operand 12 states. [2020-11-07 02:23:17,663 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:18,582 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:23:21,164 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:23:21,579 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:23,381 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-11-07 02:23:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:23:25,461 INFO L93 Difference]: Finished difference Result 3317 states and 3977 transitions. [2020-11-07 02:23:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-07 02:23:25,461 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 354 [2020-11-07 02:23:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:23:25,471 INFO L225 Difference]: With dead ends: 3317 [2020-11-07 02:23:25,471 INFO L226 Difference]: Without dead ends: 1894 [2020-11-07 02:23:25,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=352, Invalid=980, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 02:23:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-11-07 02:23:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1873. [2020-11-07 02:23:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-11-07 02:23:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2219 transitions. [2020-11-07 02:23:25,970 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2219 transitions. Word has length 354 [2020-11-07 02:23:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:23:25,971 INFO L481 AbstractCegarLoop]: Abstraction has 1873 states and 2219 transitions. [2020-11-07 02:23:25,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:23:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2219 transitions. [2020-11-07 02:23:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-11-07 02:23:25,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:23:25,976 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] [2020-11-07 02:23:25,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 02:23:25,976 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:23:25,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:23:25,977 INFO L82 PathProgramCache]: Analyzing trace with hash -865533350, now seen corresponding path program 1 times [2020-11-07 02:23:25,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:23:25,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733009463] [2020-11-07 02:23:25,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:23:25,981 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:23:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,312 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:23:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:23:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:23:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:23:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:23:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:23:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:23:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:23:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:23:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:23:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-11-07 02:23:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 02:23:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-11-07 02:23:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:23:26,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733009463] [2020-11-07 02:23:26,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:26,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:23:26,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020218062] [2020-11-07 02:23:26,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:23:26,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:26,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:23:26,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:23:26,674 INFO L87 Difference]: Start difference. First operand 1873 states and 2219 transitions. Second operand 13 states. [2020-11-07 02:23:26,802 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:29,846 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:23:30,847 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:23:31,122 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:23:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:23:32,652 INFO L93 Difference]: Finished difference Result 3320 states and 3997 transitions. [2020-11-07 02:23:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:23:32,653 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 346 [2020-11-07 02:23:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:23:32,665 INFO L225 Difference]: With dead ends: 3320 [2020-11-07 02:23:32,666 INFO L226 Difference]: Without dead ends: 1897 [2020-11-07 02:23:32,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-11-07 02:23:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2020-11-07 02:23:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1897. [2020-11-07 02:23:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1897 states. [2020-11-07 02:23:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2239 transitions. [2020-11-07 02:23:33,150 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2239 transitions. Word has length 346 [2020-11-07 02:23:33,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:23:33,151 INFO L481 AbstractCegarLoop]: Abstraction has 1897 states and 2239 transitions. [2020-11-07 02:23:33,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:23:33,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2239 transitions. [2020-11-07 02:23:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-11-07 02:23:33,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:23:33,156 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] [2020-11-07 02:23:33,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 02:23:33,157 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:23:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:23:33,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1777434789, now seen corresponding path program 1 times [2020-11-07 02:23:33,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:23:33,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023901348] [2020-11-07 02:23:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:23:33,161 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:23:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,490 WARN L194 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:23:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:23:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:23:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:23:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:23:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:23:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:23:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:23:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:23:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:23:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-11-07 02:23:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 02:23:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-11-07 02:23:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:23:33,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023901348] [2020-11-07 02:23:33,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:33,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:23:33,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282109035] [2020-11-07 02:23:33,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:23:33,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:33,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:23:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:23:33,953 INFO L87 Difference]: Start difference. First operand 1897 states and 2239 transitions. Second operand 13 states. [2020-11-07 02:23:34,076 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:36,535 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:23:37,497 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:23:37,770 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:23:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:23:39,399 INFO L93 Difference]: Finished difference Result 3364 states and 4021 transitions. [2020-11-07 02:23:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:23:39,400 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 346 [2020-11-07 02:23:39,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:23:39,410 INFO L225 Difference]: With dead ends: 3364 [2020-11-07 02:23:39,411 INFO L226 Difference]: Without dead ends: 1917 [2020-11-07 02:23:39,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-11-07 02:23:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-11-07 02:23:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1917. [2020-11-07 02:23:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-11-07 02:23:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2255 transitions. [2020-11-07 02:23:39,894 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2255 transitions. Word has length 346 [2020-11-07 02:23:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:23:39,895 INFO L481 AbstractCegarLoop]: Abstraction has 1917 states and 2255 transitions. [2020-11-07 02:23:39,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:23:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2255 transitions. [2020-11-07 02:23:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-11-07 02:23:39,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:23:39,899 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] [2020-11-07 02:23:39,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 02:23:39,900 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:23:39,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:23:39,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2099365838, now seen corresponding path program 1 times [2020-11-07 02:23:39,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:23:39,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693477867] [2020-11-07 02:23:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:23:39,904 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:23:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,285 WARN L194 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:23:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:23:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:23:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:23:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:23:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:23:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:23:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:23:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:23:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:23:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-11-07 02:23:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 02:23:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-11-07 02:23:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-11-07 02:23:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 02:23:40,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693477867] [2020-11-07 02:23:40,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:40,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:23:40,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747976535] [2020-11-07 02:23:40,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:23:40,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:40,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:23:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:23:40,716 INFO L87 Difference]: Start difference. First operand 1917 states and 2255 transitions. Second operand 13 states. [2020-11-07 02:23:43,321 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:23:44,909 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:23:45,208 WARN L194 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:23:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:23:46,263 INFO L93 Difference]: Finished difference Result 3412 states and 4065 transitions. [2020-11-07 02:23:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:23:46,264 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 356 [2020-11-07 02:23:46,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:23:46,275 INFO L225 Difference]: With dead ends: 3412 [2020-11-07 02:23:46,275 INFO L226 Difference]: Without dead ends: 1945 [2020-11-07 02:23:46,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-11-07 02:23:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-11-07 02:23:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1945. [2020-11-07 02:23:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2020-11-07 02:23:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2279 transitions. [2020-11-07 02:23:46,813 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2279 transitions. Word has length 356 [2020-11-07 02:23:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:23:46,814 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 2279 transitions. [2020-11-07 02:23:46,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:23:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2279 transitions. [2020-11-07 02:23:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-11-07 02:23:46,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:23:46,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:23:46,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 02:23:46,818 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:23:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:23:46,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1424875717, now seen corresponding path program 1 times [2020-11-07 02:23:46,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:23:46,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246818367] [2020-11-07 02:23:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:23:46,822 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:23:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,157 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:23:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:23:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:23:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:23:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:23:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:23:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:23:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:23:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:23:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:23:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-11-07 02:23:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 02:23:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-11-07 02:23:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-11-07 02:23:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 02:23:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:23:47,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246818367] [2020-11-07 02:23:47,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:47,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:23:47,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982897024] [2020-11-07 02:23:47,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:23:47,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:47,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:23:47,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:23:47,569 INFO L87 Difference]: Start difference. First operand 1945 states and 2279 transitions. Second operand 13 states. [2020-11-07 02:23:47,709 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:51,324 WARN L194 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:23:51,590 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:23:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:23:53,099 INFO L93 Difference]: Finished difference Result 3460 states and 4101 transitions. [2020-11-07 02:23:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:23:53,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 365 [2020-11-07 02:23:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:23:53,109 INFO L225 Difference]: With dead ends: 3460 [2020-11-07 02:23:53,109 INFO L226 Difference]: Without dead ends: 1965 [2020-11-07 02:23:53,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-11-07 02:23:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-11-07 02:23:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2020-11-07 02:23:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-11-07 02:23:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2295 transitions. [2020-11-07 02:23:53,877 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2295 transitions. Word has length 365 [2020-11-07 02:23:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:23:53,878 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 2295 transitions. [2020-11-07 02:23:53,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:23:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2295 transitions. [2020-11-07 02:23:53,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-11-07 02:23:53,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:23:53,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:23:53,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 02:23:53,884 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:23:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:23:53,885 INFO L82 PathProgramCache]: Analyzing trace with hash 352111121, now seen corresponding path program 1 times [2020-11-07 02:23:53,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:23:53,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609696867] [2020-11-07 02:23:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:23:53,889 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:23:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,295 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:23:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:23:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:23:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:23:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:23:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:23:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:23:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:23:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:23:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:23:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:23:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 02:23:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:23:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:23:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:23:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-07 02:23:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-11-07 02:23:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:23:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:23:54,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609696867] [2020-11-07 02:23:54,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:54,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-07 02:23:54,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118254441] [2020-11-07 02:23:54,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 02:23:54,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:54,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 02:23:54,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:23:54,954 INFO L87 Difference]: Start difference. First operand 1965 states and 2295 transitions. Second operand 19 states. [2020-11-07 02:23:55,091 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:56,069 WARN L194 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-11-07 02:23:56,851 WARN L194 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:23:57,268 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:23:57,913 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-11-07 02:23:58,712 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:00,245 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:01,439 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:01,809 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:02,127 WARN L194 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:24:02,441 WARN L194 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:04,825 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:24:05,733 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-07 02:24:06,052 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-07 02:24:06,341 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:06,626 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-07 02:24:06,943 WARN L194 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:24:07,268 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:07,842 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:24:09,722 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 02:24:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:12,596 INFO L93 Difference]: Finished difference Result 4892 states and 5727 transitions. [2020-11-07 02:24:12,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-07 02:24:12,597 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 367 [2020-11-07 02:24:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:12,616 INFO L225 Difference]: With dead ends: 4892 [2020-11-07 02:24:12,616 INFO L226 Difference]: Without dead ends: 3357 [2020-11-07 02:24:12,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1009, Invalid=3821, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 02:24:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2020-11-07 02:24:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3127. [2020-11-07 02:24:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-11-07 02:24:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 3631 transitions. [2020-11-07 02:24:13,628 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 3631 transitions. Word has length 367 [2020-11-07 02:24:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:13,629 INFO L481 AbstractCegarLoop]: Abstraction has 3127 states and 3631 transitions. [2020-11-07 02:24:13,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 02:24:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 3631 transitions. [2020-11-07 02:24:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-11-07 02:24:13,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:13,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:13,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 02:24:13,634 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:13,634 INFO L82 PathProgramCache]: Analyzing trace with hash -624934125, now seen corresponding path program 1 times [2020-11-07 02:24:13,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:13,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888624234] [2020-11-07 02:24:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:13,638 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,078 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:24:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:24:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:24:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:24:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:24:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:24:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:24:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:24:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:24:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:24:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:24:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:24:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-11-07 02:24:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 02:24:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-11-07 02:24:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-11-07 02:24:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-11-07 02:24:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 02:24:14,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888624234] [2020-11-07 02:24:14,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:14,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-11-07 02:24:14,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445096269] [2020-11-07 02:24:14,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 02:24:14,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:14,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 02:24:14,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-11-07 02:24:14,698 INFO L87 Difference]: Start difference. First operand 3127 states and 3631 transitions. Second operand 18 states. [2020-11-07 02:24:15,952 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:16,293 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:18,752 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:24:19,124 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-11-07 02:24:19,660 WARN L194 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:22,323 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:23,685 WARN L194 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-07 02:24:24,195 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:24:26,584 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:24:27,107 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:27,459 WARN L194 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-11-07 02:24:27,762 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:24:28,050 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-11-07 02:24:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:28,967 INFO L93 Difference]: Finished difference Result 6139 states and 7139 transitions. [2020-11-07 02:24:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-07 02:24:28,968 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 368 [2020-11-07 02:24:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:28,988 INFO L225 Difference]: With dead ends: 6139 [2020-11-07 02:24:28,988 INFO L226 Difference]: Without dead ends: 3952 [2020-11-07 02:24:28,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=904, Invalid=2756, Unknown=0, NotChecked=0, Total=3660 [2020-11-07 02:24:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2020-11-07 02:24:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3347. [2020-11-07 02:24:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3347 states. [2020-11-07 02:24:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 3867 transitions. [2020-11-07 02:24:30,261 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 3867 transitions. Word has length 368 [2020-11-07 02:24:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:30,262 INFO L481 AbstractCegarLoop]: Abstraction has 3347 states and 3867 transitions. [2020-11-07 02:24:30,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 02:24:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 3867 transitions. [2020-11-07 02:24:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-11-07 02:24:30,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:30,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:30,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 02:24:30,267 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:30,267 INFO L82 PathProgramCache]: Analyzing trace with hash 286062671, now seen corresponding path program 1 times [2020-11-07 02:24:30,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:30,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836903909] [2020-11-07 02:24:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:30,271 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,679 WARN L194 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:24:30,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:24:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:24:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:24:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:24:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:24:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:24:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:24:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:24:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:24:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:24:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:24:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 02:24:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:24:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:24:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:31,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:24:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-07 02:24:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-11-07 02:24:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 02:24:31,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836903909] [2020-11-07 02:24:31,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:31,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-07 02:24:31,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266797505] [2020-11-07 02:24:31,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 02:24:31,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:31,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 02:24:31,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:24:31,199 INFO L87 Difference]: Start difference. First operand 3347 states and 3867 transitions. Second operand 19 states. [2020-11-07 02:24:32,627 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:35,487 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:24:38,219 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:24:38,831 WARN L194 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:39,235 WARN L194 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:24:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:24:40,561 INFO L93 Difference]: Finished difference Result 3576 states and 4139 transitions. [2020-11-07 02:24:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-07 02:24:40,562 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 369 [2020-11-07 02:24:40,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:24:40,578 INFO L225 Difference]: With dead ends: 3576 [2020-11-07 02:24:40,578 INFO L226 Difference]: Without dead ends: 3573 [2020-11-07 02:24:40,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2020-11-07 02:24:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2020-11-07 02:24:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3375. [2020-11-07 02:24:41,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3375 states. [2020-11-07 02:24:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 3895 transitions. [2020-11-07 02:24:41,706 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 3895 transitions. Word has length 369 [2020-11-07 02:24:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:24:41,706 INFO L481 AbstractCegarLoop]: Abstraction has 3375 states and 3895 transitions. [2020-11-07 02:24:41,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 02:24:41,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 3895 transitions. [2020-11-07 02:24:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-11-07 02:24:41,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:24:41,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:24:41,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 02:24:41,711 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:24:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:24:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash -817254629, now seen corresponding path program 1 times [2020-11-07 02:24:41,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:24:41,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314828286] [2020-11-07 02:24:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:24:41,715 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:24:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,134 WARN L194 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:24:42,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:24:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:24:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:24:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:24:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:24:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:24:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:24:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:24:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:24:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:24:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:24:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:24:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 02:24:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:24:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:24:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:24:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-07 02:24:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-11-07 02:24:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-11-07 02:24:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:24:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 02:24:42,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314828286] [2020-11-07 02:24:42,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:24:42,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-07 02:24:42,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815244031] [2020-11-07 02:24:42,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 02:24:42,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:24:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 02:24:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:24:42,776 INFO L87 Difference]: Start difference. First operand 3375 states and 3895 transitions. Second operand 19 states. [2020-11-07 02:24:43,823 WARN L194 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-11-07 02:24:44,598 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:45,086 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:24:46,646 WARN L194 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-11-07 02:24:47,372 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:47,954 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:49,457 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:52,774 WARN L194 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-07 02:24:53,378 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-07 02:24:53,681 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:24:54,002 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-07 02:24:54,361 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:24:54,662 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:54,987 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:24:59,237 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:25:02,582 WARN L194 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:25:02,878 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:25:03,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:25:03,214 INFO L93 Difference]: Finished difference Result 8116 states and 9441 transitions. [2020-11-07 02:25:03,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-07 02:25:03,215 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 377 [2020-11-07 02:25:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:25:03,240 INFO L225 Difference]: With dead ends: 8116 [2020-11-07 02:25:03,240 INFO L226 Difference]: Without dead ends: 5753 [2020-11-07 02:25:03,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1097, Invalid=4305, Unknown=0, NotChecked=0, Total=5402 [2020-11-07 02:25:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2020-11-07 02:25:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 3954. [2020-11-07 02:25:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3954 states. [2020-11-07 02:25:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 4591 transitions. [2020-11-07 02:25:04,498 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 4591 transitions. Word has length 377 [2020-11-07 02:25:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:25:04,499 INFO L481 AbstractCegarLoop]: Abstraction has 3954 states and 4591 transitions. [2020-11-07 02:25:04,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 02:25:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 4591 transitions. [2020-11-07 02:25:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-11-07 02:25:04,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:04,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:04,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 02:25:04,503 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:04,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:04,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1244892074, now seen corresponding path program 1 times [2020-11-07 02:25:04,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:04,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011166500] [2020-11-07 02:25:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:04,507 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:25:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:04,830 WARN L194 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:25:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:25:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:04,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:25:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:25:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:25:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:04,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:25:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,013 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-07 02:25:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:25:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:25:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-11-07 02:25:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:25:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 02:25:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:25:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:25:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 02:25:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:25:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:25:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:25:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-07 02:25:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-11-07 02:25:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-11-07 02:25:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:25:05,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011166500] [2020-11-07 02:25:05,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:25:05,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-07 02:25:05,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80313330] [2020-11-07 02:25:05,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 02:25:05,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:25:05,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 02:25:05,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:25:05,515 INFO L87 Difference]: Start difference. First operand 3954 states and 4591 transitions. Second operand 19 states. [2020-11-07 02:25:05,647 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:25:06,595 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-11-07 02:25:08,247 WARN L194 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:25:09,511 WARN L194 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:25:10,000 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-07 02:25:12,994 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 02:25:13,417 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:25:13,575 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:25:13,998 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:25:15,744 WARN L194 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-11-07 02:25:16,161 WARN L194 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-11-07 02:25:16,494 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-11-07 02:25:16,816 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-11-07 02:25:17,152 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:25:17,469 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:25:17,800 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-11-07 02:25:18,119 WARN L194 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:25:18,877 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:25:22,229 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:25:23,598 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:25:23,918 WARN L194 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-11-07 02:25:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:25:27,720 INFO L93 Difference]: Finished difference Result 8017 states and 9545 transitions. [2020-11-07 02:25:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-07 02:25:27,720 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 377 [2020-11-07 02:25:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:25:27,742 INFO L225 Difference]: With dead ends: 8017 [2020-11-07 02:25:27,742 INFO L226 Difference]: Without dead ends: 4823 [2020-11-07 02:25:27,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=874, Invalid=3286, Unknown=0, NotChecked=0, Total=4160 [2020-11-07 02:25:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4823 states. [2020-11-07 02:25:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4823 to 3846. [2020-11-07 02:25:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3846 states. [2020-11-07 02:25:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 4442 transitions. [2020-11-07 02:25:29,139 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 4442 transitions. Word has length 377 [2020-11-07 02:25:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:25:29,139 INFO L481 AbstractCegarLoop]: Abstraction has 3846 states and 4442 transitions. [2020-11-07 02:25:29,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 02:25:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 4442 transitions. [2020-11-07 02:25:29,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-11-07 02:25:29,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:29,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:29,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 02:25:29,144 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:29,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:29,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1612946146, now seen corresponding path program 1 times [2020-11-07 02:25:29,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:29,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805460711] [2020-11-07 02:25:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:29,148 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:25:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,507 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:25:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:25:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:25:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:25:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:25:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:25:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:25:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:25:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-11-07 02:25:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:25:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 02:25:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:25:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:25:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-11-07 02:25:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 02:25:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:25:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 02:25:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:25:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 02:25:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-11-07 02:25:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:25:30,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805460711] [2020-11-07 02:25:30,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:25:30,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 02:25:30,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609357523] [2020-11-07 02:25:30,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 02:25:30,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:25:30,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 02:25:30,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-11-07 02:25:30,002 INFO L87 Difference]: Start difference. First operand 3846 states and 4442 transitions. Second operand 14 states. [2020-11-07 02:25:30,122 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:25:30,898 WARN L194 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:25:33,023 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-07 02:25:33,327 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-07 02:25:34,737 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:25:37,705 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-07 02:25:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:25:44,269 INFO L93 Difference]: Finished difference Result 10386 states and 12179 transitions. [2020-11-07 02:25:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 02:25:44,270 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 384 [2020-11-07 02:25:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:25:44,296 INFO L225 Difference]: With dead ends: 10386 [2020-11-07 02:25:44,296 INFO L226 Difference]: Without dead ends: 7368 [2020-11-07 02:25:44,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=503, Invalid=1753, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 02:25:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2020-11-07 02:25:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 6496. [2020-11-07 02:25:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6496 states. [2020-11-07 02:25:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6496 states to 6496 states and 7574 transitions. [2020-11-07 02:25:46,675 INFO L78 Accepts]: Start accepts. Automaton has 6496 states and 7574 transitions. Word has length 384 [2020-11-07 02:25:46,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:25:46,676 INFO L481 AbstractCegarLoop]: Abstraction has 6496 states and 7574 transitions. [2020-11-07 02:25:46,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 02:25:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6496 states and 7574 transitions. [2020-11-07 02:25:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-11-07 02:25:46,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:46,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:46,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 02:25:46,681 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:46,682 INFO L82 PathProgramCache]: Analyzing trace with hash 425411629, now seen corresponding path program 1 times [2020-11-07 02:25:46,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:46,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565469878] [2020-11-07 02:25:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:46,686 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:25:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,056 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:25:47,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:25:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:25:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:25:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:25:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:25:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:25:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:25:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-11-07 02:25:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:25:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 02:25:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:25:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:25:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-11-07 02:25:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 02:25:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:25:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 02:25:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:25:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 02:25:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-11-07 02:25:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:25:47,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565469878] [2020-11-07 02:25:47,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:25:47,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-07 02:25:47,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075307829] [2020-11-07 02:25:47,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 02:25:47,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:25:47,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 02:25:47,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:25:47,799 INFO L87 Difference]: Start difference. First operand 6496 states and 7574 transitions. Second operand 19 states. [2020-11-07 02:25:48,726 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-11-07 02:25:51,463 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:25:52,673 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:25:53,194 WARN L194 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-07 02:25:53,862 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 02:25:54,260 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:25:57,017 WARN L194 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-11-07 02:25:57,474 WARN L194 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-11-07 02:25:57,829 WARN L194 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-11-07 02:25:58,178 WARN L194 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-11-07 02:25:58,588 WARN L194 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:25:58,936 WARN L194 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:25:59,242 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-11-07 02:25:59,545 WARN L194 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:26:00,086 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:26:04,624 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:26:09,075 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:26:09,387 WARN L194 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-11-07 02:26:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:12,147 INFO L93 Difference]: Finished difference Result 12811 states and 15136 transitions. [2020-11-07 02:26:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-07 02:26:12,148 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 386 [2020-11-07 02:26:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:12,180 INFO L225 Difference]: With dead ends: 12811 [2020-11-07 02:26:12,180 INFO L226 Difference]: Without dead ends: 7360 [2020-11-07 02:26:12,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=926, Invalid=3496, Unknown=0, NotChecked=0, Total=4422 [2020-11-07 02:26:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2020-11-07 02:26:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 6416. [2020-11-07 02:26:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6416 states. [2020-11-07 02:26:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6416 states to 6416 states and 7467 transitions. [2020-11-07 02:26:15,012 INFO L78 Accepts]: Start accepts. Automaton has 6416 states and 7467 transitions. Word has length 386 [2020-11-07 02:26:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:15,012 INFO L481 AbstractCegarLoop]: Abstraction has 6416 states and 7467 transitions. [2020-11-07 02:26:15,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 02:26:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6416 states and 7467 transitions. [2020-11-07 02:26:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-11-07 02:26:15,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:15,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:26:15,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-07 02:26:15,017 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:15,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:15,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1152689216, now seen corresponding path program 1 times [2020-11-07 02:26:15,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:15,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114404867] [2020-11-07 02:26:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:15,021 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:15,516 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:26:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:15,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:26:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:26:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:26:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:15,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:26:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:15,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:26:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:26:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-11-07 02:26:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:26:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 02:26:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:26:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:26:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-11-07 02:26:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 02:26:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:26:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 02:26:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:26:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 02:26:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-11-07 02:26:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:26:16,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114404867] [2020-11-07 02:26:16,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:16,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-07 02:26:16,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981660688] [2020-11-07 02:26:16,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 02:26:16,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:16,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 02:26:16,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:26:16,488 INFO L87 Difference]: Start difference. First operand 6416 states and 7467 transitions. Second operand 19 states. [2020-11-07 02:26:16,620 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:26:16,785 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:26:17,682 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:26:18,850 WARN L194 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-07 02:26:19,056 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:26:19,391 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-11-07 02:26:19,705 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 103 [2020-11-07 02:26:20,173 WARN L194 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-11-07 02:26:20,652 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-11-07 02:26:23,803 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:26:23,948 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:26:24,420 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:26:24,573 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 02:26:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:29,636 INFO L93 Difference]: Finished difference Result 14015 states and 16310 transitions. [2020-11-07 02:26:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 02:26:29,639 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 394 [2020-11-07 02:26:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:29,667 INFO L225 Difference]: With dead ends: 14015 [2020-11-07 02:26:29,668 INFO L226 Difference]: Without dead ends: 7762 [2020-11-07 02:26:29,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=656, Invalid=2206, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 02:26:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2020-11-07 02:26:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 6431. [2020-11-07 02:26:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6431 states. [2020-11-07 02:26:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6431 states to 6431 states and 7482 transitions. [2020-11-07 02:26:32,760 INFO L78 Accepts]: Start accepts. Automaton has 6431 states and 7482 transitions. Word has length 394 [2020-11-07 02:26:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:32,760 INFO L481 AbstractCegarLoop]: Abstraction has 6431 states and 7482 transitions. [2020-11-07 02:26:32,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 02:26:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 6431 states and 7482 transitions. [2020-11-07 02:26:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-11-07 02:26:32,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:32,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:26:32,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-07 02:26:32,766 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:32,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:32,767 INFO L82 PathProgramCache]: Analyzing trace with hash 220972192, now seen corresponding path program 1 times [2020-11-07 02:26:32,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:32,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004298192] [2020-11-07 02:26:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:32,771 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,424 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:26:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:26:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:26:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:26:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:26:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:26:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:26:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-11-07 02:26:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:26:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 02:26:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:26:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:26:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-11-07 02:26:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 02:26:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:26:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 02:26:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:26:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 02:26:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-11-07 02:26:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:26:34,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004298192] [2020-11-07 02:26:34,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:34,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-11-07 02:26:34,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202390989] [2020-11-07 02:26:34,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 02:26:34,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:34,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 02:26:34,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-11-07 02:26:34,139 INFO L87 Difference]: Start difference. First operand 6431 states and 7482 transitions. Second operand 18 states. [2020-11-07 02:26:34,275 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:26:34,441 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-07 02:26:34,861 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-11-07 02:26:35,331 WARN L194 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-11-07 02:26:36,365 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-07 02:26:36,542 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:26:36,739 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-11-07 02:26:37,109 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-11-07 02:26:39,191 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-11-07 02:26:39,382 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 02:26:39,776 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:26:40,227 WARN L194 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-07 02:26:41,600 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:26:43,257 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-07 02:26:43,399 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:26:43,553 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:26:43,810 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:26:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:47,479 INFO L93 Difference]: Finished difference Result 12263 states and 14330 transitions. [2020-11-07 02:26:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 02:26:47,480 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 394 [2020-11-07 02:26:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:47,501 INFO L225 Difference]: With dead ends: 12263 [2020-11-07 02:26:47,501 INFO L226 Difference]: Without dead ends: 6458 [2020-11-07 02:26:47,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=782, Invalid=2410, Unknown=0, NotChecked=0, Total=3192 [2020-11-07 02:26:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6458 states. [2020-11-07 02:26:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6458 to 6422. [2020-11-07 02:26:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6422 states. [2020-11-07 02:26:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6422 states to 6422 states and 7458 transitions. [2020-11-07 02:26:50,378 INFO L78 Accepts]: Start accepts. Automaton has 6422 states and 7458 transitions. Word has length 394 [2020-11-07 02:26:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:50,379 INFO L481 AbstractCegarLoop]: Abstraction has 6422 states and 7458 transitions. [2020-11-07 02:26:50,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 02:26:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 6422 states and 7458 transitions. [2020-11-07 02:26:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-11-07 02:26:50,382 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:50,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:26:50,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-07 02:26:50,382 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1926861259, now seen corresponding path program 1 times [2020-11-07 02:26:50,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:50,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994683653] [2020-11-07 02:26:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:50,386 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,706 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 02:26:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-11-07 02:26:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 02:26:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-07 02:26:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-07 02:26:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:26:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:26:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-11-07 02:26:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-07 02:26:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 02:26:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:26:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-07 02:26:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 02:26:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 02:26:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:26:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 02:26:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:26:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 02:26:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-11-07 02:26:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:26:51,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994683653] [2020-11-07 02:26:51,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:51,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 02:26:51,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892815528] [2020-11-07 02:26:51,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 02:26:51,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:51,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 02:26:51,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-11-07 02:26:51,220 INFO L87 Difference]: Start difference. First operand 6422 states and 7458 transitions. Second operand 16 states. [2020-11-07 02:26:51,355 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:26:51,511 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:26:52,320 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-07 02:26:53,321 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-11-07 02:26:53,508 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:26:55,531 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:26:55,670 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:26:55,814 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:26:55,987 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:26:56,324 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:26:56,462 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:26:59,169 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:26:59,308 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:27:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:27:02,764 INFO L93 Difference]: Finished difference Result 12186 states and 14215 transitions. [2020-11-07 02:27:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 02:27:02,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 395 [2020-11-07 02:27:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:27:02,788 INFO L225 Difference]: With dead ends: 12186 [2020-11-07 02:27:02,788 INFO L226 Difference]: Without dead ends: 6435 [2020-11-07 02:27:02,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=664, Invalid=1988, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 02:27:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6435 states. [2020-11-07 02:27:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6435 to 6417. [2020-11-07 02:27:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6417 states. [2020-11-07 02:27:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6417 states to 6417 states and 7448 transitions. [2020-11-07 02:27:05,605 INFO L78 Accepts]: Start accepts. Automaton has 6417 states and 7448 transitions. Word has length 395 [2020-11-07 02:27:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:27:05,606 INFO L481 AbstractCegarLoop]: Abstraction has 6417 states and 7448 transitions. [2020-11-07 02:27:05,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 02:27:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6417 states and 7448 transitions. [2020-11-07 02:27:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-11-07 02:27:05,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:27:05,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:27:05,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-07 02:27:05,611 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:27:05,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:27:05,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1019979115, now seen corresponding path program 1 times [2020-11-07 02:27:05,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:27:05,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552508679] [2020-11-07 02:27:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:27:05,615 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:27:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:27:05,686 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:27:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:27:05,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:27:06,206 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 02:27:06,206 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 02:27:06,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-07 02:27:06,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:27:06 BoogieIcfgContainer [2020-11-07 02:27:06,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:27:06,266 INFO L168 Benchmark]: Toolchain (without parser) took 309373.17 ms. Allocated memory was 166.7 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 141.9 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 924.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:06,266 INFO L168 Benchmark]: CDTParser took 1.25 ms. Allocated memory is still 166.7 MB. Free memory was 139.7 MB in the beginning and 139.6 MB in the end (delta: 102.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:27:06,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.64 ms. Allocated memory is still 166.7 MB. Free memory was 141.2 MB in the beginning and 123.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:06,267 INFO L168 Benchmark]: Boogie Preprocessor took 100.65 ms. Allocated memory is still 166.7 MB. Free memory was 123.8 MB in the beginning and 120.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:06,267 INFO L168 Benchmark]: RCFGBuilder took 1488.70 ms. Allocated memory was 166.7 MB in the beginning and 211.8 MB in the end (delta: 45.1 MB). Free memory was 120.7 MB in the beginning and 164.3 MB in the end (delta: -43.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:06,267 INFO L168 Benchmark]: TraceAbstraction took 307256.47 ms. Allocated memory was 211.8 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 163.7 MB in the beginning and 1.1 GB in the end (delta: -982.7 MB). Peak memory consumption was 901.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:06,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.25 ms. Allocated memory is still 166.7 MB. Free memory was 139.7 MB in the beginning and 139.6 MB in the end (delta: 102.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 514.64 ms. Allocated memory is still 166.7 MB. Free memory was 141.2 MB in the beginning and 123.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.65 ms. Allocated memory is still 166.7 MB. Free memory was 123.8 MB in the beginning and 120.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1488.70 ms. Allocated memory was 166.7 MB in the beginning and 211.8 MB in the end (delta: 45.1 MB). Free memory was 120.7 MB in the beginning and 164.3 MB in the end (delta: -43.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 307256.47 ms. Allocated memory was 211.8 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 163.7 MB in the beginning and 1.1 GB in the end (delta: -982.7 MB). Peak memory consumption was 901.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L71] msg_t nomsg = (msg_t )-1; [L72] port_t cs1 ; [L73] int8_t cs1_old ; [L74] int8_t cs1_new ; [L75] port_t cs2 ; [L76] int8_t cs2_old ; [L77] int8_t cs2_new ; [L78] port_t s1s2 ; [L79] int8_t s1s2_old ; [L80] int8_t s1s2_new ; [L81] port_t s1s1 ; [L82] int8_t s1s1_old ; [L83] int8_t s1s1_new ; [L84] port_t s2s1 ; [L85] int8_t s2s1_old ; [L86] int8_t s2s1_new ; [L87] port_t s2s2 ; [L88] int8_t s2s2_old ; [L89] int8_t s2s2_new ; [L90] port_t s1p ; [L91] int8_t s1p_old ; [L92] int8_t s1p_new ; [L93] port_t s2p ; [L94] int8_t s2p_old ; [L95] int8_t s2p_new ; [L98] _Bool side1Failed ; [L99] _Bool side2Failed ; [L100] msg_t side1_written ; [L101] msg_t side2_written ; [L107] static _Bool side1Failed_History_0 ; [L108] static _Bool side1Failed_History_1 ; [L109] static _Bool side1Failed_History_2 ; [L110] static _Bool side2Failed_History_0 ; [L111] static _Bool side2Failed_History_1 ; [L112] static _Bool side2Failed_History_2 ; [L113] static int8_t active_side_History_0 ; [L114] static int8_t active_side_History_1 ; [L115] static int8_t active_side_History_2 ; [L116] static msg_t manual_selection_History_0 ; [L117] static msg_t manual_selection_History_1 ; [L118] static msg_t manual_selection_History_2 ; [L468] void (*nodes[4])(void) = { & Console_task_each_pals_period, & Side1_activestandby_task_each_pals_period, & Side2_activestandby_task_each_pals_period, & Pendulum_prism_task_each_pals_period}; [L590] int c1 ; [L591] int i2 ; [L594] c1 = 0 [L595] side1Failed = __VERIFIER_nondet_bool() [L596] side2Failed = __VERIFIER_nondet_bool() [L597] side1_written = __VERIFIER_nondet_char() [L598] side2_written = __VERIFIER_nondet_char() [L599] side1Failed_History_0 = __VERIFIER_nondet_bool() [L600] side1Failed_History_1 = __VERIFIER_nondet_bool() [L601] side1Failed_History_2 = __VERIFIER_nondet_bool() [L602] side2Failed_History_0 = __VERIFIER_nondet_bool() [L603] side2Failed_History_1 = __VERIFIER_nondet_bool() [L604] side2Failed_History_2 = __VERIFIER_nondet_bool() [L605] active_side_History_0 = __VERIFIER_nondet_char() [L606] active_side_History_1 = __VERIFIER_nondet_char() [L607] active_side_History_2 = __VERIFIER_nondet_char() [L608] manual_selection_History_0 = __VERIFIER_nondet_char() [L609] manual_selection_History_1 = __VERIFIER_nondet_char() [L610] manual_selection_History_2 = __VERIFIER_nondet_char() [L611] CALL, EXPR init() [L244] COND FALSE !((int )side1Failed_History_0 != 0) [L247] COND FALSE !((int )side2Failed_History_0 != 0) [L250] COND FALSE !((int )active_side_History_0 != -2) [L253] COND FALSE !((int )manual_selection_History_0 != 0) [L256] COND FALSE !((int )side1Failed_History_1 != 0) [L259] COND FALSE !((int )side2Failed_History_1 != 0) [L262] COND FALSE !((int )active_side_History_1 != -2) [L265] COND FALSE !((int )manual_selection_History_1 != 0) [L268] COND FALSE !((int )side1Failed_History_2 != 0) [L271] COND FALSE !((int )side2Failed_History_2 != 0) [L274] COND FALSE !((int )active_side_History_2 != -2) [L277] COND FALSE !((int )manual_selection_History_2 != 0) [L280] return (1); [L611] RET, EXPR init() [L611] i2 = init() [L612] CALL assume_abort_if_not(i2) [L105] COND FALSE !(!cond) [L612] RET assume_abort_if_not(i2) [L613] cs1_old = nomsg [L614] cs1_new = nomsg [L615] cs2_old = nomsg [L616] cs2_new = nomsg [L617] s1s2_old = nomsg [L618] s1s2_new = nomsg [L619] s1s1_old = nomsg [L620] s1s1_new = nomsg [L621] s2s1_old = nomsg [L622] s2s1_new = nomsg [L623] s2s2_old = nomsg [L624] s2s2_new = nomsg [L625] s1p_old = nomsg [L626] s1p_new = nomsg [L627] s2p_old = nomsg [L628] s2p_new = nomsg [L629] i2 = 0 [L630] COND TRUE i2 < 10 [L632] CALL Console_task_each_pals_period() [L298] msg_t manual_selection ; [L299] char tmp ; [L302] tmp = __VERIFIER_nondet_char() [L303] manual_selection = tmp [L304] CALL write_manual_selection_history(manual_selection) [L214] manual_selection_History_2 = manual_selection_History_1 [L215] manual_selection_History_1 = manual_selection_History_0 [L216] manual_selection_History_0 = val [L304] RET write_manual_selection_history(manual_selection) [L305] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L305] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L306] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L306] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L307] manual_selection = (msg_t )0 [L632] RET Console_task_each_pals_period() [L633] CALL Side1_activestandby_task_each_pals_period() [L313] int8_t side1 ; [L314] int8_t side2 ; [L315] msg_t manual_selection ; [L316] int8_t next_state ; [L319] side1 = nomsg [L320] side2 = nomsg [L321] manual_selection = (msg_t )0 [L322] side1Failed = __VERIFIER_nondet_bool() [L323] CALL write_side1_failed_history(side1Failed) [L124] side1Failed_History_2 = side1Failed_History_1 [L125] side1Failed_History_1 = side1Failed_History_0 [L126] side1Failed_History_0 = val [L323] RET write_side1_failed_history(side1Failed) [L324] COND FALSE !(\read(side1Failed)) [L331] side1 = s1s1_old [L332] s1s1_old = nomsg [L333] side2 = s2s1_old [L334] s2s1_old = nomsg [L335] manual_selection = cs1_old [L336] cs1_old = nomsg [L337] COND TRUE (int )side1 == (int )side2 [L338] next_state = (int8_t )1 [L361] EXPR next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L361] s1s1_new = next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L362] EXPR next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L362] s1s2_new = next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L363] EXPR next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L363] s1p_new = next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L364] side1_written = next_state [L633] RET Side1_activestandby_task_each_pals_period() [L634] CALL Side2_activestandby_task_each_pals_period() [L370] int8_t side1 ; [L371] int8_t side2 ; [L372] msg_t manual_selection ; [L373] int8_t next_state ; [L376] side1 = nomsg [L377] side2 = nomsg [L378] manual_selection = (msg_t )0 [L379] side2Failed = __VERIFIER_nondet_bool() [L380] CALL write_side2_failed_history(side2Failed) [L154] side2Failed_History_2 = side2Failed_History_1 [L155] side2Failed_History_1 = side2Failed_History_0 [L156] side2Failed_History_0 = val [L380] RET write_side2_failed_history(side2Failed) [L381] COND FALSE !(\read(side2Failed)) [L388] side1 = s1s2_old [L389] s1s2_old = nomsg [L390] side2 = s2s2_old [L391] s2s2_old = nomsg [L392] manual_selection = cs2_old [L393] cs2_old = nomsg [L394] COND TRUE (int )side1 == (int )side2 [L395] next_state = (int8_t )1 [L418] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L418] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L419] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L419] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L420] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L420] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L421] side2_written = next_state [L634] RET Side2_activestandby_task_each_pals_period() [L635] CALL Pendulum_prism_task_each_pals_period() [L427] int8_t active_side ; [L428] int8_t tmp ; [L429] int8_t side1 ; [L430] int8_t side2 ; [L433] CALL, EXPR read_active_side_history((unsigned char)0) [L195] COND TRUE (int )index == 0 [L196] return (active_side_History_0); [L433] RET, EXPR read_active_side_history((unsigned char)0) [L433] tmp = read_active_side_history((unsigned char)0) [L434] active_side = tmp [L435] side1 = nomsg [L436] side2 = nomsg [L437] side1 = s1p_old [L438] s1p_old = nomsg [L439] side2 = s2p_old [L440] s2p_old = nomsg [L441] COND FALSE !((int )side1 == 1) [L444] COND FALSE !((int )side2 == 1) [L447] COND FALSE !((int )side1 == 0) [L455] COND TRUE (int )side1 == (int )nomsg [L456] COND FALSE !((int )side2 == 0) [L459] active_side = (int8_t )0 [L464] CALL write_active_side_history(active_side) [L184] active_side_History_2 = active_side_History_1 [L185] active_side_History_1 = active_side_History_0 [L186] active_side_History_0 = val [L464] RET write_active_side_history(active_side) [L635] RET Pendulum_prism_task_each_pals_period() [L636] cs1_old = cs1_new [L637] cs1_new = nomsg [L638] cs2_old = cs2_new [L639] cs2_new = nomsg [L640] s1s2_old = s1s2_new [L641] s1s2_new = nomsg [L642] s1s1_old = s1s1_new [L643] s1s1_new = nomsg [L644] s2s1_old = s2s1_new [L645] s2s1_new = nomsg [L646] s2s2_old = s2s2_new [L647] s2s2_new = nomsg [L648] s1p_old = s1p_new [L649] s1p_new = nomsg [L650] s2p_old = s2p_new [L651] s2p_new = nomsg [L652] CALL, EXPR check() [L471] int tmp ; [L472] msg_t tmp___0 ; [L473] _Bool tmp___1 ; [L474] _Bool tmp___2 ; [L475] _Bool tmp___3 ; [L476] _Bool tmp___4 ; [L477] int8_t tmp___5 ; [L478] _Bool tmp___6 ; [L479] _Bool tmp___7 ; [L480] _Bool tmp___8 ; [L481] int8_t tmp___9 ; [L482] _Bool tmp___10 ; [L483] _Bool tmp___11 ; [L484] _Bool tmp___12 ; [L485] msg_t tmp___13 ; [L486] _Bool tmp___14 ; [L487] _Bool tmp___15 ; [L488] _Bool tmp___16 ; [L489] _Bool tmp___17 ; [L490] int8_t tmp___18 ; [L491] int8_t tmp___19 ; [L492] int8_t tmp___20 ; [L495] COND TRUE ! side1Failed [L496] tmp = 1 [L503] CALL assume_abort_if_not((_Bool )tmp) [L105] COND FALSE !(!cond) [L503] RET assume_abort_if_not((_Bool )tmp) [L504] CALL, EXPR read_manual_selection_history((unsigned char)1) [L225] COND FALSE !((int )index == 0) [L228] COND TRUE (int )index == 1 [L229] return (manual_selection_History_1); [L504] RET, EXPR read_manual_selection_history((unsigned char)1) [L504] tmp___0 = read_manual_selection_history((unsigned char)1) [L505] COND TRUE ! tmp___0 [L506] CALL, EXPR read_side1_failed_history((unsigned char)1) [L135] COND FALSE !((int )index == 0) [L138] COND TRUE (int )index == 1 [L139] return (side1Failed_History_1); [L506] RET, EXPR read_side1_failed_history((unsigned char)1) [L506] tmp___1 = read_side1_failed_history((unsigned char)1) [L507] COND TRUE ! tmp___1 [L508] CALL, EXPR read_side1_failed_history((unsigned char)0) [L135] COND TRUE (int )index == 0 [L136] return (side1Failed_History_0); [L508] RET, EXPR read_side1_failed_history((unsigned char)0) [L508] tmp___2 = read_side1_failed_history((unsigned char)0) [L509] COND TRUE ! tmp___2 [L510] CALL, EXPR read_side2_failed_history((unsigned char)1) [L165] COND FALSE !((int )index == 0) [L168] COND TRUE (int )index == 1 [L169] return (side2Failed_History_1); [L510] RET, EXPR read_side2_failed_history((unsigned char)1) [L510] tmp___3 = read_side2_failed_history((unsigned char)1) [L511] COND TRUE ! tmp___3 [L512] CALL, EXPR read_side2_failed_history((unsigned char)0) [L165] COND TRUE (int )index == 0 [L166] return (side2Failed_History_0); [L512] RET, EXPR read_side2_failed_history((unsigned char)0) [L512] tmp___4 = read_side2_failed_history((unsigned char)0) [L513] COND TRUE ! tmp___4 [L514] COND FALSE !(! ((int )side1_written == 1)) [L519] COND FALSE !(! (! ((int )side1_written == 0))) [L524] COND TRUE ! (! ((int )side1_written == 1)) [L525] COND TRUE ! ((int )side2_written == 0) [L526] return (0); [L652] RET, EXPR check() [L652] c1 = check() [L653] CALL assert(c1) [L665] COND TRUE ! arg [L667] CALL reach_error() [L3] __assert_fail("0", "pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 589 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 307.1s, OverallIterations: 25, TraceHistogramMax: 2, AutomataDifference: 256.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16412 SDtfs, 75591 SDslu, 26666 SDs, 0 SdLazy, 74216 SolverSat, 12827 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1826 GetRequests, 784 SyntacticMatches, 17 SemanticMatches, 1025 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11360 ImplicationChecksByTransitivity, 95.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6496occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 26.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 7227 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...