/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 0.1.25-3af5e1f [2020-09-04 17:59:20,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:59:20,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:59:20,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:59:20,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:59:20,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:59:20,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:59:20,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:59:20,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:59:20,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:59:20,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:59:20,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:59:20,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:59:20,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:59:20,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:59:20,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:59:20,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:59:20,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:59:20,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:59:20,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:59:20,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:59:20,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:59:20,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:59:20,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:59:20,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:59:20,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:59:20,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:59:20,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:59:20,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:59:20,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:59:20,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:59:20,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:59:20,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:59:20,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:59:20,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:59:20,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:59:20,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:59:20,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:59:20,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:59:20,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:59:20,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:59:20,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:59:20,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:59:20,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:59:20,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:59:20,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:59:20,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:59:20,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:59:20,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:59:20,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:59:20,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:59:20,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:59:20,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:59:20,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:59:20,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:59:20,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:59:20,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:59:20,894 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:59:20,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:59:20,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:59:20,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:59:20,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:59:20,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:59:20,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:59:20,895 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:59:21,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:59:21,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:59:21,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:59:21,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:59:21,367 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:59:21,368 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-04 17:59:21,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21071c9f8/4b39e2a39ab04924b84a3e16beb3ea8a/FLAG3e2ba5498 [2020-09-04 17:59:22,089 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:59:22,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-04 17:59:22,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21071c9f8/4b39e2a39ab04924b84a3e16beb3ea8a/FLAG3e2ba5498 [2020-09-04 17:59:22,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21071c9f8/4b39e2a39ab04924b84a3e16beb3ea8a [2020-09-04 17:59:22,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:59:22,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:59:22,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:59:22,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:59:22,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:59:22,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:59:22" (1/1) ... [2020-09-04 17:59:22,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:22, skipping insertion in model container [2020-09-04 17:59:22,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:59:22" (1/1) ... [2020-09-04 17:59:22,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:59:22,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:59:22,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:59:22,802 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:59:22,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:59:23,010 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:59:23,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23 WrapperNode [2020-09-04 17:59:23,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:59:23,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:59:23,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:59:23,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:59:23,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (1/1) ... [2020-09-04 17:59:23,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (1/1) ... [2020-09-04 17:59:23,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (1/1) ... [2020-09-04 17:59:23,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (1/1) ... [2020-09-04 17:59:23,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (1/1) ... [2020-09-04 17:59:23,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (1/1) ... [2020-09-04 17:59:23,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (1/1) ... [2020-09-04 17:59:23,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:59:23,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:59:23,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:59:23,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:59:23,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:59:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:59:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:59:23,175 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:59:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-09-04 17:59:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-09-04 17:59:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-09-04 17:59:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-09-04 17:59:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-09-04 17:59:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-09-04 17:59:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-09-04 17:59:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-09-04 17:59:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-04 17:59:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-09-04 17:59:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-09-04 17:59:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-09-04 17:59:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-09-04 17:59:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-09-04 17:59:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-04 17:59:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:59:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-09-04 17:59:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:59:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 17:59:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 17:59:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-04 17:59:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-04 17:59:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-04 17:59:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:59:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:59:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-09-04 17:59:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-09-04 17:59:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-09-04 17:59:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-09-04 17:59:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-09-04 17:59:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-09-04 17:59:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-09-04 17:59:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-09-04 17:59:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-04 17:59:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-09-04 17:59:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-09-04 17:59:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-09-04 17:59:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-09-04 17:59:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-09-04 17:59:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-04 17:59:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:59:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:59:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:59:24,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:59:24,345 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:59:24,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:59:24 BoogieIcfgContainer [2020-09-04 17:59:24,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:59:24,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:59:24,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:59:24,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:59:24,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:59:22" (1/3) ... [2020-09-04 17:59:24,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30944205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:59:24, skipping insertion in model container [2020-09-04 17:59:24,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:23" (2/3) ... [2020-09-04 17:59:24,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30944205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:59:24, skipping insertion in model container [2020-09-04 17:59:24,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:59:24" (3/3) ... [2020-09-04 17:59:24,366 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-04 17:59:24,379 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:59:24,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:59:24,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:59:24,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:59:24,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:59:24,451 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:59:24,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:59:24,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:59:24,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:59:24,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:59:24,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:59:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states. [2020-09-04 17:59:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-04 17:59:24,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:24,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:24,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:24,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1455574608, now seen corresponding path program 1 times [2020-09-04 17:59:24,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:24,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263879089] [2020-09-04 17:59:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:24,646 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,230 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 17:59:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 17:59:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 17:59:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-04 17:59:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 17:59:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:59:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 17:59:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:25,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263879089] [2020-09-04 17:59:25,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:25,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 17:59:25,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133257417] [2020-09-04 17:59:25,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 17:59:25,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:25,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 17:59:25,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-04 17:59:25,754 INFO L87 Difference]: Start difference. First operand 577 states. Second operand 14 states. [2020-09-04 17:59:26,484 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 17:59:26,857 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 17:59:27,051 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 17:59:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:31,180 INFO L93 Difference]: Finished difference Result 1058 states and 1321 transitions. [2020-09-04 17:59:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 17:59:31,183 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 228 [2020-09-04 17:59:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:31,213 INFO L225 Difference]: With dead ends: 1058 [2020-09-04 17:59:31,214 INFO L226 Difference]: Without dead ends: 581 [2020-09-04 17:59:31,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-09-04 17:59:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-09-04 17:59:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 553. [2020-09-04 17:59:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-09-04 17:59:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 646 transitions. [2020-09-04 17:59:31,415 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 646 transitions. Word has length 228 [2020-09-04 17:59:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:31,416 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 646 transitions. [2020-09-04 17:59:31,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 17:59:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 646 transitions. [2020-09-04 17:59:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-04 17:59:31,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:31,424 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] [2020-09-04 17:59:31,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:59:31,424 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:31,425 INFO L82 PathProgramCache]: Analyzing trace with hash 503549649, now seen corresponding path program 1 times [2020-09-04 17:59:31,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:31,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553112769] [2020-09-04 17:59:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:31,429 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,787 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 17:59:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 17:59:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 17:59:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 17:59:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 17:59:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 17:59:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:59:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:32,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553112769] [2020-09-04 17:59:32,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:32,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:59:32,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982629765] [2020-09-04 17:59:32,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:59:32,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:32,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:59:32,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:59:32,044 INFO L87 Difference]: Start difference. First operand 553 states and 646 transitions. Second operand 11 states. [2020-09-04 17:59:33,968 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 17:59:34,161 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 17:59:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:35,817 INFO L93 Difference]: Finished difference Result 982 states and 1173 transitions. [2020-09-04 17:59:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 17:59:35,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2020-09-04 17:59:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:35,825 INFO L225 Difference]: With dead ends: 982 [2020-09-04 17:59:35,825 INFO L226 Difference]: Without dead ends: 558 [2020-09-04 17:59:35,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2020-09-04 17:59:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-09-04 17:59:35,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2020-09-04 17:59:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-09-04 17:59:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 650 transitions. [2020-09-04 17:59:35,947 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 650 transitions. Word has length 239 [2020-09-04 17:59:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:35,949 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 650 transitions. [2020-09-04 17:59:35,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:59:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 650 transitions. [2020-09-04 17:59:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-04 17:59:35,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:35,977 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] [2020-09-04 17:59:35,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:59:35,978 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:35,978 INFO L82 PathProgramCache]: Analyzing trace with hash -734642201, now seen corresponding path program 1 times [2020-09-04 17:59:35,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:35,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310622578] [2020-09-04 17:59:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:35,983 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,349 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 17:59:36,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 17:59:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 17:59:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 17:59:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 17:59:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 17:59:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:59:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 17:59:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-04 17:59:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 17:59:37,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310622578] [2020-09-04 17:59:37,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:37,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-04 17:59:37,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619933902] [2020-09-04 17:59:37,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 17:59:37,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 17:59:37,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-04 17:59:37,059 INFO L87 Difference]: Start difference. First operand 558 states and 650 transitions. Second operand 16 states. [2020-09-04 17:59:37,225 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-04 17:59:37,905 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 17:59:40,198 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 17:59:40,329 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-04 17:59:40,480 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 17:59:41,268 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 17:59:43,619 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 17:59:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:44,235 INFO L93 Difference]: Finished difference Result 1187 states and 1396 transitions. [2020-09-04 17:59:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 17:59:44,237 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 312 [2020-09-04 17:59:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:44,245 INFO L225 Difference]: With dead ends: 1187 [2020-09-04 17:59:44,246 INFO L226 Difference]: Without dead ends: 758 [2020-09-04 17:59:44,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 17:59:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-09-04 17:59:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 750. [2020-09-04 17:59:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-09-04 17:59:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 867 transitions. [2020-09-04 17:59:44,409 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 867 transitions. Word has length 312 [2020-09-04 17:59:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:44,410 INFO L479 AbstractCegarLoop]: Abstraction has 750 states and 867 transitions. [2020-09-04 17:59:44,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 17:59:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 867 transitions. [2020-09-04 17:59:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-09-04 17:59:44,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:44,417 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] [2020-09-04 17:59:44,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:59:44,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:44,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:44,418 INFO L82 PathProgramCache]: Analyzing trace with hash 679708041, now seen corresponding path program 1 times [2020-09-04 17:59:44,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:44,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227934254] [2020-09-04 17:59:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:44,426 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:44,837 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 17:59:44,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 17:59:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 17:59:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:44,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 17:59:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 17:59:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 17:59:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:59:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 17:59:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:59:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-09-04 17:59:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:45,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227934254] [2020-09-04 17:59:45,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:45,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-04 17:59:45,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102736410] [2020-09-04 17:59:45,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 17:59:45,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:45,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 17:59:45,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-04 17:59:45,497 INFO L87 Difference]: Start difference. First operand 750 states and 867 transitions. Second operand 16 states. [2020-09-04 17:59:46,350 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 17:59:49,284 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 17:59:50,028 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 17:59:52,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:52,993 INFO L93 Difference]: Finished difference Result 1195 states and 1406 transitions. [2020-09-04 17:59:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 17:59:52,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-09-04 17:59:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:53,000 INFO L225 Difference]: With dead ends: 1195 [2020-09-04 17:59:53,000 INFO L226 Difference]: Without dead ends: 763 [2020-09-04 17:59:53,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=591, Invalid=1959, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 17:59:53,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-09-04 17:59:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 750. [2020-09-04 17:59:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-09-04 17:59:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 867 transitions. [2020-09-04 17:59:53,143 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 867 transitions. Word has length 313 [2020-09-04 17:59:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:53,144 INFO L479 AbstractCegarLoop]: Abstraction has 750 states and 867 transitions. [2020-09-04 17:59:53,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 17:59:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 867 transitions. [2020-09-04 17:59:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-09-04 17:59:53,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:53,147 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] [2020-09-04 17:59:53,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:59:53,147 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:53,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1399853749, now seen corresponding path program 1 times [2020-09-04 17:59:53,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:53,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728988177] [2020-09-04 17:59:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:53,151 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,439 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 17:59:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 17:59:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 17:59:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 17:59:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 17:59:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 17:59:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:59:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 17:59:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 17:59:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-09-04 17:59:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:53,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728988177] [2020-09-04 17:59:53,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:53,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 17:59:53,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685388605] [2020-09-04 17:59:53,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 17:59:53,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:53,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 17:59:53,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:59:53,904 INFO L87 Difference]: Start difference. First operand 750 states and 867 transitions. Second operand 12 states. [2020-09-04 17:59:55,610 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 17:59:56,657 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-04 17:59:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:59,521 INFO L93 Difference]: Finished difference Result 1642 states and 1947 transitions. [2020-09-04 17:59:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 17:59:59,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 315 [2020-09-04 17:59:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:59,530 INFO L225 Difference]: With dead ends: 1642 [2020-09-04 17:59:59,530 INFO L226 Difference]: Without dead ends: 1210 [2020-09-04 17:59:59,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 17:59:59,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-09-04 17:59:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1168. [2020-09-04 17:59:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-09-04 17:59:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1376 transitions. [2020-09-04 17:59:59,758 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1376 transitions. Word has length 315 [2020-09-04 17:59:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:59,759 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1376 transitions. [2020-09-04 17:59:59,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 17:59:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1376 transitions. [2020-09-04 17:59:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-09-04 17:59:59,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:59,763 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] [2020-09-04 17:59:59,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 17:59:59,763 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:59,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1977685633, now seen corresponding path program 1 times [2020-09-04 17:59:59,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:59,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981948947] [2020-09-04 17:59:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:59,767 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,034 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:00:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:00:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 18:00:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:00,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981948947] [2020-09-04 18:00:00,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:00,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 18:00:00,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479981813] [2020-09-04 18:00:00,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 18:00:00,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:00,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 18:00:00,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-04 18:00:00,481 INFO L87 Difference]: Start difference. First operand 1168 states and 1376 transitions. Second operand 12 states. [2020-09-04 18:00:03,004 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:00:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:06,727 INFO L93 Difference]: Finished difference Result 2588 states and 3126 transitions. [2020-09-04 18:00:06,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 18:00:06,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 316 [2020-09-04 18:00:06,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:06,740 INFO L225 Difference]: With dead ends: 2588 [2020-09-04 18:00:06,741 INFO L226 Difference]: Without dead ends: 1828 [2020-09-04 18:00:06,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 18:00:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-09-04 18:00:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1808. [2020-09-04 18:00:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-09-04 18:00:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2169 transitions. [2020-09-04 18:00:07,122 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2169 transitions. Word has length 316 [2020-09-04 18:00:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:07,123 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2169 transitions. [2020-09-04 18:00:07,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 18:00:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2169 transitions. [2020-09-04 18:00:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-09-04 18:00:07,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:07,128 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] [2020-09-04 18:00:07,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 18:00:07,129 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1013367263, now seen corresponding path program 1 times [2020-09-04 18:00:07,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:07,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564485196] [2020-09-04 18:00:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:07,133 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,429 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:00:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:00:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 18:00:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:07,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564485196] [2020-09-04 18:00:07,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:07,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 18:00:07,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737526917] [2020-09-04 18:00:07,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 18:00:07,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:07,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 18:00:07,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-04 18:00:07,872 INFO L87 Difference]: Start difference. First operand 1808 states and 2169 transitions. Second operand 13 states. [2020-09-04 18:00:08,003 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-04 18:00:10,753 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 18:00:10,929 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:00:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:12,431 INFO L93 Difference]: Finished difference Result 3206 states and 3905 transitions. [2020-09-04 18:00:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 18:00:12,432 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 316 [2020-09-04 18:00:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:12,442 INFO L225 Difference]: With dead ends: 3206 [2020-09-04 18:00:12,443 INFO L226 Difference]: Without dead ends: 1832 [2020-09-04 18:00:12,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-09-04 18:00:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-09-04 18:00:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1832. [2020-09-04 18:00:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1832 states. [2020-09-04 18:00:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2189 transitions. [2020-09-04 18:00:12,931 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2189 transitions. Word has length 316 [2020-09-04 18:00:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:12,934 INFO L479 AbstractCegarLoop]: Abstraction has 1832 states and 2189 transitions. [2020-09-04 18:00:12,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 18:00:12,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2189 transitions. [2020-09-04 18:00:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-04 18:00:12,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:12,939 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] [2020-09-04 18:00:12,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 18:00:12,940 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:12,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:12,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1065816740, now seen corresponding path program 1 times [2020-09-04 18:00:12,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:12,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382593857] [2020-09-04 18:00:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:12,946 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,227 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:13,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:00:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:00:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 18:00:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-09-04 18:00:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:13,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382593857] [2020-09-04 18:00:13,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:13,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 18:00:13,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871353407] [2020-09-04 18:00:13,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 18:00:13,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:13,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 18:00:13,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-04 18:00:13,649 INFO L87 Difference]: Start difference. First operand 1832 states and 2189 transitions. Second operand 13 states. [2020-09-04 18:00:16,513 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 18:00:16,690 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:00:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:18,073 INFO L93 Difference]: Finished difference Result 3254 states and 3957 transitions. [2020-09-04 18:00:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 18:00:18,074 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 327 [2020-09-04 18:00:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:18,085 INFO L225 Difference]: With dead ends: 3254 [2020-09-04 18:00:18,085 INFO L226 Difference]: Without dead ends: 1856 [2020-09-04 18:00:18,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-09-04 18:00:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2020-09-04 18:00:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1856. [2020-09-04 18:00:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1856 states. [2020-09-04 18:00:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2209 transitions. [2020-09-04 18:00:18,472 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2209 transitions. Word has length 327 [2020-09-04 18:00:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:18,473 INFO L479 AbstractCegarLoop]: Abstraction has 1856 states and 2209 transitions. [2020-09-04 18:00:18,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 18:00:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2209 transitions. [2020-09-04 18:00:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-04 18:00:18,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:18,478 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] [2020-09-04 18:00:18,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 18:00:18,479 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:18,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:18,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1818880722, now seen corresponding path program 1 times [2020-09-04 18:00:18,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:18,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853270966] [2020-09-04 18:00:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:18,482 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,765 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:18,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 18:00:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-04 18:00:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:19,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:19,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 18:00:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:19,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-09-04 18:00:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-09-04 18:00:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:19,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853270966] [2020-09-04 18:00:19,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:19,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 18:00:19,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649109700] [2020-09-04 18:00:19,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 18:00:19,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 18:00:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-04 18:00:19,204 INFO L87 Difference]: Start difference. First operand 1856 states and 2209 transitions. Second operand 12 states. [2020-09-04 18:00:19,905 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:00:20,596 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-09-04 18:00:25,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:25,087 INFO L93 Difference]: Finished difference Result 3360 states and 4034 transitions. [2020-09-04 18:00:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 18:00:25,088 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 345 [2020-09-04 18:00:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:25,097 INFO L225 Difference]: With dead ends: 3360 [2020-09-04 18:00:25,097 INFO L226 Difference]: Without dead ends: 1938 [2020-09-04 18:00:25,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=351, Invalid=981, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 18:00:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2020-09-04 18:00:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1856. [2020-09-04 18:00:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1856 states. [2020-09-04 18:00:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2204 transitions. [2020-09-04 18:00:25,397 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2204 transitions. Word has length 345 [2020-09-04 18:00:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:25,397 INFO L479 AbstractCegarLoop]: Abstraction has 1856 states and 2204 transitions. [2020-09-04 18:00:25,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 18:00:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2204 transitions. [2020-09-04 18:00:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-04 18:00:25,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:25,402 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] [2020-09-04 18:00:25,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 18:00:25,402 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:25,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:25,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1366816095, now seen corresponding path program 1 times [2020-09-04 18:00:25,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:25,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121946352] [2020-09-04 18:00:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:25,406 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,657 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:00:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:00:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 18:00:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-09-04 18:00:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:25,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 18:00:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:26,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121946352] [2020-09-04 18:00:26,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:26,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 18:00:26,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390206178] [2020-09-04 18:00:26,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 18:00:26,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:26,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 18:00:26,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-04 18:00:26,150 INFO L87 Difference]: Start difference. First operand 1856 states and 2204 transitions. Second operand 13 states. [2020-09-04 18:00:26,276 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-04 18:00:29,094 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 18:00:29,269 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:00:30,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:30,596 INFO L93 Difference]: Finished difference Result 3298 states and 3968 transitions. [2020-09-04 18:00:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 18:00:30,597 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 337 [2020-09-04 18:00:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:30,607 INFO L225 Difference]: With dead ends: 3298 [2020-09-04 18:00:30,608 INFO L226 Difference]: Without dead ends: 1876 [2020-09-04 18:00:30,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-09-04 18:00:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2020-09-04 18:00:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1876. [2020-09-04 18:00:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1876 states. [2020-09-04 18:00:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2220 transitions. [2020-09-04 18:00:31,165 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2220 transitions. Word has length 337 [2020-09-04 18:00:31,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:31,166 INFO L479 AbstractCegarLoop]: Abstraction has 1876 states and 2220 transitions. [2020-09-04 18:00:31,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 18:00:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2220 transitions. [2020-09-04 18:00:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-04 18:00:31,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:31,171 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] [2020-09-04 18:00:31,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 18:00:31,171 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:31,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:31,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1432010434, now seen corresponding path program 1 times [2020-09-04 18:00:31,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:31,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600938597] [2020-09-04 18:00:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:31,175 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,525 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:31,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:00:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:00:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 18:00:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-09-04 18:00:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 18:00:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:31,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600938597] [2020-09-04 18:00:31,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:31,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 18:00:31,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742452371] [2020-09-04 18:00:31,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 18:00:31,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:31,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 18:00:31,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-04 18:00:31,946 INFO L87 Difference]: Start difference. First operand 1876 states and 2220 transitions. Second operand 13 states. [2020-09-04 18:00:34,915 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 18:00:35,103 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:00:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:36,441 INFO L93 Difference]: Finished difference Result 3342 states and 4016 transitions. [2020-09-04 18:00:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 18:00:36,442 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 337 [2020-09-04 18:00:36,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:36,449 INFO L225 Difference]: With dead ends: 3342 [2020-09-04 18:00:36,450 INFO L226 Difference]: Without dead ends: 1900 [2020-09-04 18:00:36,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-09-04 18:00:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-09-04 18:00:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1900. [2020-09-04 18:00:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1900 states. [2020-09-04 18:00:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2240 transitions. [2020-09-04 18:00:36,771 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2240 transitions. Word has length 337 [2020-09-04 18:00:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:36,772 INFO L479 AbstractCegarLoop]: Abstraction has 1900 states and 2240 transitions. [2020-09-04 18:00:36,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 18:00:36,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2240 transitions. [2020-09-04 18:00:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-09-04 18:00:36,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:36,777 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] [2020-09-04 18:00:36,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 18:00:36,777 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:36,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:36,778 INFO L82 PathProgramCache]: Analyzing trace with hash -748593540, now seen corresponding path program 1 times [2020-09-04 18:00:36,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:36,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23672729] [2020-09-04 18:00:36,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:36,781 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,103 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:00:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:00:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 18:00:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-09-04 18:00:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 18:00:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 18:00:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 18:00:37,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23672729] [2020-09-04 18:00:37,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:37,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 18:00:37,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911254860] [2020-09-04 18:00:37,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 18:00:37,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:37,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 18:00:37,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-04 18:00:37,507 INFO L87 Difference]: Start difference. First operand 1900 states and 2240 transitions. Second operand 13 states. [2020-09-04 18:00:41,283 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 18:00:41,456 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:00:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:42,270 INFO L93 Difference]: Finished difference Result 3394 states and 4052 transitions. [2020-09-04 18:00:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 18:00:42,270 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 347 [2020-09-04 18:00:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:42,280 INFO L225 Difference]: With dead ends: 3394 [2020-09-04 18:00:42,280 INFO L226 Difference]: Without dead ends: 1928 [2020-09-04 18:00:42,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-09-04 18:00:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2020-09-04 18:00:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1928. [2020-09-04 18:00:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2020-09-04 18:00:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2264 transitions. [2020-09-04 18:00:42,686 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2264 transitions. Word has length 347 [2020-09-04 18:00:42,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:42,687 INFO L479 AbstractCegarLoop]: Abstraction has 1928 states and 2264 transitions. [2020-09-04 18:00:42,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 18:00:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2264 transitions. [2020-09-04 18:00:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-09-04 18:00:42,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:42,692 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] [2020-09-04 18:00:42,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 18:00:42,692 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:42,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2102824394, now seen corresponding path program 1 times [2020-09-04 18:00:42,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:42,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906795789] [2020-09-04 18:00:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:42,696 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,966 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:42,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:00:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:00:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 18:00:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-09-04 18:00:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 18:00:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 18:00:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-09-04 18:00:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:43,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906795789] [2020-09-04 18:00:43,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:43,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 18:00:43,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523578368] [2020-09-04 18:00:43,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 18:00:43,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:43,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 18:00:43,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-04 18:00:43,311 INFO L87 Difference]: Start difference. First operand 1928 states and 2264 transitions. Second operand 13 states. [2020-09-04 18:00:46,635 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 18:00:46,807 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:00:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:48,013 INFO L93 Difference]: Finished difference Result 3442 states and 4088 transitions. [2020-09-04 18:00:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 18:00:48,014 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 356 [2020-09-04 18:00:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:48,023 INFO L225 Difference]: With dead ends: 3442 [2020-09-04 18:00:48,023 INFO L226 Difference]: Without dead ends: 1948 [2020-09-04 18:00:48,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-09-04 18:00:48,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2020-09-04 18:00:48,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2020-09-04 18:00:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-09-04 18:00:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2280 transitions. [2020-09-04 18:00:48,610 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2280 transitions. Word has length 356 [2020-09-04 18:00:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:48,610 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2280 transitions. [2020-09-04 18:00:48,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 18:00:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2280 transitions. [2020-09-04 18:00:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-09-04 18:00:48,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:48,615 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] [2020-09-04 18:00:48,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 18:00:48,616 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:48,616 INFO L82 PathProgramCache]: Analyzing trace with hash 253250884, now seen corresponding path program 1 times [2020-09-04 18:00:48,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:48,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243071561] [2020-09-04 18:00:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:48,619 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:48,996 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:00:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:00:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:00:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:00:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:00:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:00:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:00:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:00:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 18:00:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 18:00:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-04 18:00:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-04 18:00:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 18:00:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:49,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243071561] [2020-09-04 18:00:49,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:49,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 18:00:49,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905005125] [2020-09-04 18:00:49,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 18:00:49,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:49,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 18:00:49,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-04 18:00:49,724 INFO L87 Difference]: Start difference. First operand 1948 states and 2280 transitions. Second operand 19 states. [2020-09-04 18:00:49,867 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-04 18:00:50,581 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-09-04 18:00:51,239 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:00:52,187 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-04 18:00:52,851 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:00:54,489 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-04 18:00:55,535 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:00:55,761 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:00:55,961 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:00:56,157 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:00:58,906 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-09-04 18:00:59,121 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-09-04 18:00:59,305 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:00:59,484 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-09-04 18:00:59,691 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:00:59,891 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:01:00,374 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:01:01,919 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-04 18:01:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:04,298 INFO L93 Difference]: Finished difference Result 4872 states and 5717 transitions. [2020-09-04 18:01:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-04 18:01:04,298 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 358 [2020-09-04 18:01:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:04,315 INFO L225 Difference]: With dead ends: 4872 [2020-09-04 18:01:04,315 INFO L226 Difference]: Without dead ends: 3338 [2020-09-04 18:01:04,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1009, Invalid=3821, Unknown=0, NotChecked=0, Total=4830 [2020-09-04 18:01:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-09-04 18:01:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3110. [2020-09-04 18:01:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-09-04 18:01:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 3621 transitions. [2020-09-04 18:01:05,024 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 3621 transitions. Word has length 358 [2020-09-04 18:01:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:05,025 INFO L479 AbstractCegarLoop]: Abstraction has 3110 states and 3621 transitions. [2020-09-04 18:01:05,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 18:01:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 3621 transitions. [2020-09-04 18:01:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-09-04 18:01:05,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:05,029 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] [2020-09-04 18:01:05,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 18:01:05,029 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:05,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1675012295, now seen corresponding path program 1 times [2020-09-04 18:01:05,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:05,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211360800] [2020-09-04 18:01:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:05,033 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,343 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:01:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:01:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:01:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:01:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:01:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:01:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:01:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:01:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:01:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 18:01:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-09-04 18:01:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 18:01:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-04 18:01:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-09-04 18:01:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 18:01:05,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211360800] [2020-09-04 18:01:05,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:01:05,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-04 18:01:05,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060399486] [2020-09-04 18:01:05,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 18:01:05,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:01:05,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 18:01:05,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-09-04 18:01:05,831 INFO L87 Difference]: Start difference. First operand 3110 states and 3621 transitions. Second operand 18 states. [2020-09-04 18:01:06,868 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:01:07,068 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:01:09,420 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-04 18:01:09,752 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-09-04 18:01:10,128 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:01:13,629 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-09-04 18:01:14,012 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:01:16,500 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:01:16,699 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-09-04 18:01:16,891 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:01:17,075 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-09-04 18:01:17,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:17,859 INFO L93 Difference]: Finished difference Result 6120 states and 7135 transitions. [2020-09-04 18:01:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-04 18:01:17,859 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 359 [2020-09-04 18:01:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:17,877 INFO L225 Difference]: With dead ends: 6120 [2020-09-04 18:01:17,877 INFO L226 Difference]: Without dead ends: 3934 [2020-09-04 18:01:17,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=904, Invalid=2756, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 18:01:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2020-09-04 18:01:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3330. [2020-09-04 18:01:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3330 states. [2020-09-04 18:01:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 3856 transitions. [2020-09-04 18:01:18,608 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 3856 transitions. Word has length 359 [2020-09-04 18:01:18,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:18,609 INFO L479 AbstractCegarLoop]: Abstraction has 3330 states and 3856 transitions. [2020-09-04 18:01:18,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 18:01:18,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 3856 transitions. [2020-09-04 18:01:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-04 18:01:18,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:18,612 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] [2020-09-04 18:01:18,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 18:01:18,612 INFO L427 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:18,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:18,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1949253743, now seen corresponding path program 1 times [2020-09-04 18:01:18,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:18,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482554441] [2020-09-04 18:01:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:18,615 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:18,881 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:01:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:18,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:01:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:01:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:01:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:01:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:01:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:01:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-04 18:01:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:01:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 18:01:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 18:01:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-04 18:01:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-04 18:01:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 18:01:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 18:01:19,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482554441] [2020-09-04 18:01:19,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:01:19,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 18:01:19,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98043007] [2020-09-04 18:01:19,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 18:01:19,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:01:19,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 18:01:19,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-04 18:01:19,409 INFO L87 Difference]: Start difference. First operand 3330 states and 3856 transitions. Second operand 13 states. [2020-09-04 18:01:20,106 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:01:22,154 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:01:22,487 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-04 18:01:22,748 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-04 18:01:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:28,413 INFO L93 Difference]: Finished difference Result 5652 states and 6593 transitions. [2020-09-04 18:01:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 18:01:28,413 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 368 [2020-09-04 18:01:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:28,431 INFO L225 Difference]: With dead ends: 5652 [2020-09-04 18:01:28,431 INFO L226 Difference]: Without dead ends: 3358 [2020-09-04 18:01:28,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=429, Invalid=1377, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 18:01:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2020-09-04 18:01:29,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3338. [2020-09-04 18:01:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3338 states. [2020-09-04 18:01:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 3858 transitions. [2020-09-04 18:01:29,105 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 3858 transitions. Word has length 368 [2020-09-04 18:01:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:29,106 INFO L479 AbstractCegarLoop]: Abstraction has 3338 states and 3858 transitions. [2020-09-04 18:01:29,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 18:01:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 3858 transitions. [2020-09-04 18:01:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-09-04 18:01:29,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:29,108 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] [2020-09-04 18:01:29,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 18:01:29,109 INFO L427 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1797326370, now seen corresponding path program 1 times [2020-09-04 18:01:29,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:29,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425675269] [2020-09-04 18:01:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:29,112 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,473 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:01:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:01:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:01:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:01:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:01:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:01:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:01:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:01:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:01:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 18:01:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 18:01:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-04 18:01:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-04 18:01:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 18:01:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 18:01:29,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425675269] [2020-09-04 18:01:29,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:01:29,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 18:01:29,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265813706] [2020-09-04 18:01:29,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 18:01:29,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:01:29,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 18:01:29,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-09-04 18:01:29,983 INFO L87 Difference]: Start difference. First operand 3338 states and 3858 transitions. Second operand 19 states. [2020-09-04 18:01:31,230 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:01:34,181 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-04 18:01:36,436 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 18:01:36,902 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:01:37,153 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:01:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:38,333 INFO L93 Difference]: Finished difference Result 3566 states and 4129 transitions. [2020-09-04 18:01:38,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-04 18:01:38,334 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 360 [2020-09-04 18:01:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:38,348 INFO L225 Difference]: With dead ends: 3566 [2020-09-04 18:01:38,348 INFO L226 Difference]: Without dead ends: 3564 [2020-09-04 18:01:38,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 18:01:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2020-09-04 18:01:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3366. [2020-09-04 18:01:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3366 states. [2020-09-04 18:01:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 3886 transitions. [2020-09-04 18:01:39,032 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 3886 transitions. Word has length 360 [2020-09-04 18:01:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:39,033 INFO L479 AbstractCegarLoop]: Abstraction has 3366 states and 3886 transitions. [2020-09-04 18:01:39,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 18:01:39,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 3886 transitions. [2020-09-04 18:01:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-04 18:01:39,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:39,037 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] [2020-09-04 18:01:39,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 18:01:39,037 INFO L427 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:39,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:39,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1714211011, now seen corresponding path program 1 times [2020-09-04 18:01:39,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:39,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883955848] [2020-09-04 18:01:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:39,041 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,355 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:01:39,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:01:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:01:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:01:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:01:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:01:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:01:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:01:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:01:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 18:01:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 18:01:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-04 18:01:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-04 18:01:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-04 18:01:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 18:01:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:01:39,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883955848] [2020-09-04 18:01:39,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:01:39,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 18:01:39,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175236476] [2020-09-04 18:01:39,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 18:01:39,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:01:39,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 18:01:39,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-09-04 18:01:39,936 INFO L87 Difference]: Start difference. First operand 3366 states and 3886 transitions. Second operand 19 states. [2020-09-04 18:01:40,763 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-09-04 18:01:42,072 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:01:43,057 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:01:43,436 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-04 18:01:46,020 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-04 18:01:46,385 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-04 18:01:48,285 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-04 18:01:48,610 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-04 18:01:48,866 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-09-04 18:01:49,119 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-04 18:01:49,402 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:01:49,659 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:01:49,906 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-09-04 18:01:50,143 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:01:50,783 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-04 18:01:53,811 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-04 18:01:54,678 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:01:54,900 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-04 18:01:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:58,388 INFO L93 Difference]: Finished difference Result 6582 states and 7788 transitions. [2020-09-04 18:01:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 18:01:58,389 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 368 [2020-09-04 18:01:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:58,420 INFO L225 Difference]: With dead ends: 6582 [2020-09-04 18:01:58,420 INFO L226 Difference]: Without dead ends: 4080 [2020-09-04 18:01:58,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=874, Invalid=3286, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 18:01:58,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2020-09-04 18:01:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 3262. [2020-09-04 18:01:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2020-09-04 18:01:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 3740 transitions. [2020-09-04 18:01:59,372 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 3740 transitions. Word has length 368 [2020-09-04 18:01:59,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:59,373 INFO L479 AbstractCegarLoop]: Abstraction has 3262 states and 3740 transitions. [2020-09-04 18:01:59,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 18:01:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 3740 transitions. [2020-09-04 18:01:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-04 18:01:59,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:59,376 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] [2020-09-04 18:01:59,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 18:01:59,376 INFO L427 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:59,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1666968922, now seen corresponding path program 1 times [2020-09-04 18:01:59,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:59,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325267013] [2020-09-04 18:01:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:59,379 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,698 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:01:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:01:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:01:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:01:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:01:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:01:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 18:01:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:01:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:59,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 18:01:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:02:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:02:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-04 18:02:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:02:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 18:02:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-04 18:02:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-04 18:02:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 18:02:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-04 18:02:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 18:02:00,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325267013] [2020-09-04 18:02:00,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:00,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 18:02:00,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267719682] [2020-09-04 18:02:00,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 18:02:00,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:00,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 18:02:00,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-04 18:02:00,281 INFO L87 Difference]: Start difference. First operand 3262 states and 3740 transitions. Second operand 19 states. [2020-09-04 18:02:01,223 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-09-04 18:02:01,928 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:02:02,344 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-04 18:02:04,107 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-04 18:02:04,773 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:02:05,386 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-04 18:02:06,809 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:02:07,377 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-04 18:02:09,030 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-04 18:02:09,895 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-09-04 18:02:10,346 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-09-04 18:02:10,547 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:02:10,752 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-09-04 18:02:10,989 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:02:11,191 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:02:11,421 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:02:15,293 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:02:17,933 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:02:18,140 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:02:18,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:02:18,867 INFO L93 Difference]: Finished difference Result 7936 states and 9199 transitions. [2020-09-04 18:02:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-09-04 18:02:18,868 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 368 [2020-09-04 18:02:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:02:18,891 INFO L225 Difference]: With dead ends: 7936 [2020-09-04 18:02:18,892 INFO L226 Difference]: Without dead ends: 5634 [2020-09-04 18:02:18,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1097, Invalid=4305, Unknown=0, NotChecked=0, Total=5402 [2020-09-04 18:02:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2020-09-04 18:02:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 3837. [2020-09-04 18:02:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3837 states. [2020-09-04 18:02:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 4433 transitions. [2020-09-04 18:02:20,115 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 4433 transitions. Word has length 368 [2020-09-04 18:02:20,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:02:20,116 INFO L479 AbstractCegarLoop]: Abstraction has 3837 states and 4433 transitions. [2020-09-04 18:02:20,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 18:02:20,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 4433 transitions. [2020-09-04 18:02:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-09-04 18:02:20,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:02:20,119 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] [2020-09-04 18:02:20,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 18:02:20,120 INFO L427 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:02:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:02:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash -324557620, now seen corresponding path program 1 times [2020-09-04 18:02:20,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:02:20,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211223146] [2020-09-04 18:02:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:02:20,123 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:02:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,389 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:02:20,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:02:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:02:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:02:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:02:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:02:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:02:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:02:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 18:02:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:02:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-04 18:02:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:02:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:02:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 18:02:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 18:02:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 18:02:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 18:02:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:02:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-04 18:02:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-04 18:02:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:02:20,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211223146] [2020-09-04 18:02:20,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:20,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 18:02:20,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407907600] [2020-09-04 18:02:20,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 18:02:20,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:20,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 18:02:20,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-09-04 18:02:20,958 INFO L87 Difference]: Start difference. First operand 3837 states and 4433 transitions. Second operand 14 states. [2020-09-04 18:02:21,780 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-04 18:02:24,041 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-09-04 18:02:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:02:34,289 INFO L93 Difference]: Finished difference Result 10374 states and 12167 transitions. [2020-09-04 18:02:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-04 18:02:34,289 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 375 [2020-09-04 18:02:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:02:34,316 INFO L225 Difference]: With dead ends: 10374 [2020-09-04 18:02:34,316 INFO L226 Difference]: Without dead ends: 7357 [2020-09-04 18:02:34,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=503, Invalid=1753, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 18:02:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7357 states. [2020-09-04 18:02:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7357 to 6487. [2020-09-04 18:02:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6487 states. [2020-09-04 18:02:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6487 states to 6487 states and 7565 transitions. [2020-09-04 18:02:36,799 INFO L78 Accepts]: Start accepts. Automaton has 6487 states and 7565 transitions. Word has length 375 [2020-09-04 18:02:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:02:36,800 INFO L479 AbstractCegarLoop]: Abstraction has 6487 states and 7565 transitions. [2020-09-04 18:02:36,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 18:02:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 6487 states and 7565 transitions. [2020-09-04 18:02:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-09-04 18:02:36,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:02:36,804 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] [2020-09-04 18:02:36,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 18:02:36,804 INFO L427 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:02:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:02:36,805 INFO L82 PathProgramCache]: Analyzing trace with hash -46799871, now seen corresponding path program 1 times [2020-09-04 18:02:36,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:02:36,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495363299] [2020-09-04 18:02:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:02:36,808 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:02:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,142 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:02:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:02:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:02:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:02:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:02:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:02:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:02:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:02:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 18:02:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:02:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-04 18:02:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:02:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:02:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 18:02:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 18:02:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 18:02:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 18:02:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:02:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-04 18:02:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-04 18:02:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:02:37,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495363299] [2020-09-04 18:02:37,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:37,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 18:02:37,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215588108] [2020-09-04 18:02:37,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 18:02:37,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:37,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 18:02:37,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-09-04 18:02:37,754 INFO L87 Difference]: Start difference. First operand 6487 states and 7565 transitions. Second operand 19 states. [2020-09-04 18:02:38,553 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-09-04 18:02:40,911 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:02:41,960 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:02:42,398 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-04 18:02:43,010 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-04 18:02:43,419 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-04 18:02:43,585 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-04 18:02:43,981 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-04 18:02:45,957 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-04 18:02:46,236 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-04 18:02:46,478 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-09-04 18:02:46,705 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-04 18:02:46,977 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:02:47,210 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:02:47,438 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-09-04 18:02:47,660 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-09-04 18:02:48,167 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-04 18:02:55,940 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:02:56,171 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-09-04 18:02:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:02:58,627 INFO L93 Difference]: Finished difference Result 12800 states and 15125 transitions. [2020-09-04 18:02:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-04 18:02:58,628 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 377 [2020-09-04 18:02:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:02:58,652 INFO L225 Difference]: With dead ends: 12800 [2020-09-04 18:02:58,652 INFO L226 Difference]: Without dead ends: 7350 [2020-09-04 18:02:58,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=926, Invalid=3496, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 18:02:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2020-09-04 18:03:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 6407. [2020-09-04 18:03:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6407 states. [2020-09-04 18:03:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6407 states to 6407 states and 7458 transitions. [2020-09-04 18:03:00,689 INFO L78 Accepts]: Start accepts. Automaton has 6407 states and 7458 transitions. Word has length 377 [2020-09-04 18:03:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:00,689 INFO L479 AbstractCegarLoop]: Abstraction has 6407 states and 7458 transitions. [2020-09-04 18:03:00,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 18:03:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 6407 states and 7458 transitions. [2020-09-04 18:03:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-09-04 18:03:00,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:00,692 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] [2020-09-04 18:03:00,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 18:03:00,693 INFO L427 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1911507794, now seen corresponding path program 1 times [2020-09-04 18:03:00,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:00,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628129849] [2020-09-04 18:03:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:00,696 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,308 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:03:01,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:03:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:03:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:03:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:03:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:03:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:03:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:03:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 18:03:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:03:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 18:03:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:03:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:03:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 18:03:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 18:03:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 18:03:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 18:03:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:03:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-04 18:03:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-04 18:03:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:03:02,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628129849] [2020-09-04 18:03:02,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:03:02,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-04 18:03:02,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018011022] [2020-09-04 18:03:02,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 18:03:02,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:03:02,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 18:03:02,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-09-04 18:03:02,079 INFO L87 Difference]: Start difference. First operand 6407 states and 7458 transitions. Second operand 20 states. [2020-09-04 18:03:02,215 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 18:03:03,018 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:03:04,243 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2020-09-04 18:03:04,535 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-04 18:03:04,741 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-04 18:03:05,031 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:03:07,705 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-04 18:03:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:11,876 INFO L93 Difference]: Finished difference Result 12230 states and 14303 transitions. [2020-09-04 18:03:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 18:03:11,878 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 385 [2020-09-04 18:03:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:11,900 INFO L225 Difference]: With dead ends: 12230 [2020-09-04 18:03:11,901 INFO L226 Difference]: Without dead ends: 6438 [2020-09-04 18:03:11,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=559, Invalid=1793, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 18:03:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2020-09-04 18:03:13,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 6111. [2020-09-04 18:03:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6111 states. [2020-09-04 18:03:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 7117 transitions. [2020-09-04 18:03:14,002 INFO L78 Accepts]: Start accepts. Automaton has 6111 states and 7117 transitions. Word has length 385 [2020-09-04 18:03:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:14,002 INFO L479 AbstractCegarLoop]: Abstraction has 6111 states and 7117 transitions. [2020-09-04 18:03:14,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 18:03:14,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6111 states and 7117 transitions. [2020-09-04 18:03:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-09-04 18:03:14,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:14,005 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] [2020-09-04 18:03:14,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 18:03:14,006 INFO L427 AbstractCegarLoop]: === Iteration 23 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:14,006 INFO L82 PathProgramCache]: Analyzing trace with hash 208161870, now seen corresponding path program 1 times [2020-09-04 18:03:14,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:14,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982764031] [2020-09-04 18:03:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:14,009 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:14,568 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:03:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:03:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:14,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:03:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:03:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:14,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:03:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:03:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:14,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:03:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:03:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 18:03:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:03:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 18:03:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:03:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:03:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 18:03:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 18:03:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 18:03:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 18:03:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:03:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-04 18:03:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-04 18:03:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:03:15,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982764031] [2020-09-04 18:03:15,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:03:15,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-09-04 18:03:15,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050323940] [2020-09-04 18:03:15,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 18:03:15,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:03:15,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 18:03:15,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-09-04 18:03:15,603 INFO L87 Difference]: Start difference. First operand 6111 states and 7117 transitions. Second operand 22 states. [2020-09-04 18:03:15,748 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 18:03:16,554 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:03:17,786 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 140 [2020-09-04 18:03:18,096 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-04 18:03:18,303 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-04 18:03:18,754 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:03:21,204 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-04 18:03:25,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:25,848 INFO L93 Difference]: Finished difference Result 11480 states and 13441 transitions. [2020-09-04 18:03:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 18:03:25,849 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 385 [2020-09-04 18:03:25,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:25,868 INFO L225 Difference]: With dead ends: 11480 [2020-09-04 18:03:25,868 INFO L226 Difference]: Without dead ends: 6147 [2020-09-04 18:03:25,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=560, Invalid=1990, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 18:03:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2020-09-04 18:03:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 6141. [2020-09-04 18:03:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2020-09-04 18:03:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 7153 transitions. [2020-09-04 18:03:27,953 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 7153 transitions. Word has length 385 [2020-09-04 18:03:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:27,953 INFO L479 AbstractCegarLoop]: Abstraction has 6141 states and 7153 transitions. [2020-09-04 18:03:27,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 18:03:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 7153 transitions. [2020-09-04 18:03:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-09-04 18:03:27,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:27,957 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] [2020-09-04 18:03:27,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 18:03:27,957 INFO L427 AbstractCegarLoop]: === Iteration 24 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:27,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:27,958 INFO L82 PathProgramCache]: Analyzing trace with hash -515694418, now seen corresponding path program 1 times [2020-09-04 18:03:27,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:27,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836302477] [2020-09-04 18:03:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:27,960 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:28,739 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:03:28,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:03:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:03:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:28,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:03:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:03:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:28,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:03:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:28,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:03:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:03:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 18:03:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:03:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 18:03:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:03:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:03:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 18:03:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 18:03:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 18:03:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 18:03:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:03:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-04 18:03:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-04 18:03:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:03:29,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836302477] [2020-09-04 18:03:29,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:03:29,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-04 18:03:29,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292045279] [2020-09-04 18:03:29,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 18:03:29,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:03:29,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 18:03:29,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-09-04 18:03:29,403 INFO L87 Difference]: Start difference. First operand 6141 states and 7153 transitions. Second operand 20 states. [2020-09-04 18:03:29,549 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 18:03:30,292 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-04 18:03:31,533 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2020-09-04 18:03:31,837 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-09-04 18:03:32,026 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-04 18:03:32,338 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:03:34,603 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-04 18:03:34,812 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 18:03:35,060 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-04 18:03:35,238 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-04 18:03:35,800 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-09-04 18:03:37,205 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2020-09-04 18:03:37,391 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-04 18:03:38,810 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-09-04 18:03:38,959 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-04 18:03:39,121 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-09-04 18:03:39,412 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-04 18:03:39,561 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-04 18:03:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:42,704 INFO L93 Difference]: Finished difference Result 11675 states and 13661 transitions. [2020-09-04 18:03:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 18:03:42,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 385 [2020-09-04 18:03:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:42,729 INFO L225 Difference]: With dead ends: 11675 [2020-09-04 18:03:42,729 INFO L226 Difference]: Without dead ends: 6168 [2020-09-04 18:03:42,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=797, Invalid=2625, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 18:03:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6168 states. [2020-09-04 18:03:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6168 to 6132. [2020-09-04 18:03:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6132 states. [2020-09-04 18:03:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 7129 transitions. [2020-09-04 18:03:45,365 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 7129 transitions. Word has length 385 [2020-09-04 18:03:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:45,365 INFO L479 AbstractCegarLoop]: Abstraction has 6132 states and 7129 transitions. [2020-09-04 18:03:45,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 18:03:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 7129 transitions. [2020-09-04 18:03:45,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-09-04 18:03:45,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:45,368 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] [2020-09-04 18:03:45,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 18:03:45,369 INFO L427 AbstractCegarLoop]: === Iteration 25 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:45,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1732527382, now seen corresponding path program 1 times [2020-09-04 18:03:45,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:45,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643723139] [2020-09-04 18:03:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:45,371 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,671 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-04 18:03:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:03:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 18:03:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 18:03:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 18:03:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 18:03:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:03:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:03:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 18:03:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 18:03:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:45,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 18:03:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:03:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 18:03:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-09-04 18:03:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 18:03:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 18:03:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 18:03:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:03:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-04 18:03:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-04 18:03:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:03:46,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643723139] [2020-09-04 18:03:46,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:03:46,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-04 18:03:46,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466577972] [2020-09-04 18:03:46,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 18:03:46,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:03:46,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 18:03:46,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-04 18:03:46,175 INFO L87 Difference]: Start difference. First operand 6132 states and 7129 transitions. Second operand 16 states. [2020-09-04 18:03:46,313 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-04 18:03:47,161 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-04 18:03:48,153 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-04 18:03:50,424 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-04 18:03:50,560 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 18:03:50,698 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-04 18:03:50,859 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 18:03:51,507 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-04 18:03:54,038 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-04 18:03:54,170 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-04 18:03:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:57,441 INFO L93 Difference]: Finished difference Result 11598 states and 13546 transitions. [2020-09-04 18:03:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 18:03:57,441 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 386 [2020-09-04 18:03:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:57,456 INFO L225 Difference]: With dead ends: 11598 [2020-09-04 18:03:57,456 INFO L226 Difference]: Without dead ends: 6145 [2020-09-04 18:03:57,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=649, Invalid=1901, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 18:03:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2020-09-04 18:03:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 6127. [2020-09-04 18:03:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6127 states. [2020-09-04 18:03:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 7119 transitions. [2020-09-04 18:03:59,363 INFO L78 Accepts]: Start accepts. Automaton has 6127 states and 7119 transitions. Word has length 386 [2020-09-04 18:03:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:59,363 INFO L479 AbstractCegarLoop]: Abstraction has 6127 states and 7119 transitions. [2020-09-04 18:03:59,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 18:03:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6127 states and 7119 transitions. [2020-09-04 18:03:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-09-04 18:03:59,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:59,367 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] [2020-09-04 18:03:59,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 18:03:59,367 INFO L427 AbstractCegarLoop]: === Iteration 26 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:59,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1147712330, now seen corresponding path program 1 times [2020-09-04 18:03:59,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:59,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361196769] [2020-09-04 18:03:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:59,370 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 18:03:59,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 18:03:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 18:03:59,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 18:03:59,828 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 18:03:59,829 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 18:03:59,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 18:03:59,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 06:03:59 BoogieIcfgContainer [2020-09-04 18:03:59,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 18:03:59,876 INFO L168 Benchmark]: Toolchain (without parser) took 277519.37 ms. Allocated memory was 146.8 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 101.6 MB in the beginning and 603.0 MB in the end (delta: -501.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2020-09-04 18:03:59,876 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 146.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 18:03:59,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.50 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 101.4 MB in the beginning and 178.6 MB in the end (delta: -77.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-04 18:03:59,878 INFO L168 Benchmark]: Boogie Preprocessor took 88.47 ms. Allocated memory is still 205.5 MB. Free memory was 178.6 MB in the beginning and 175.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-04 18:03:59,878 INFO L168 Benchmark]: RCFGBuilder took 1255.29 ms. Allocated memory was 205.5 MB in the beginning and 236.5 MB in the end (delta: 30.9 MB). Free memory was 175.3 MB in the beginning and 202.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2020-09-04 18:03:59,879 INFO L168 Benchmark]: TraceAbstraction took 275517.47 ms. Allocated memory was 236.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 201.3 MB in the beginning and 603.0 MB in the end (delta: -401.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2020-09-04 18:03:59,880 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 146.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.50 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 101.4 MB in the beginning and 178.6 MB in the end (delta: -77.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.47 ms. Allocated memory is still 205.5 MB. Free memory was 178.6 MB in the beginning and 175.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1255.29 ms. Allocated memory was 205.5 MB in the beginning and 236.5 MB in the end (delta: 30.9 MB). Free memory was 175.3 MB in the beginning and 202.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 275517.47 ms. Allocated memory was 236.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 201.3 MB in the beginning and 603.0 MB in the end (delta: -401.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 665]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] msg_t nomsg = (msg_t )-1; [L70] port_t cs1 ; [L71] int8_t cs1_old ; [L72] int8_t cs1_new ; [L73] port_t cs2 ; [L74] int8_t cs2_old ; [L75] int8_t cs2_new ; [L76] port_t s1s2 ; [L77] int8_t s1s2_old ; [L78] int8_t s1s2_new ; [L79] port_t s1s1 ; [L80] int8_t s1s1_old ; [L81] int8_t s1s1_new ; [L82] port_t s2s1 ; [L83] int8_t s2s1_old ; [L84] int8_t s2s1_new ; [L85] port_t s2s2 ; [L86] int8_t s2s2_old ; [L87] int8_t s2s2_new ; [L88] port_t s1p ; [L89] int8_t s1p_old ; [L90] int8_t s1p_new ; [L91] port_t s2p ; [L92] int8_t s2p_old ; [L93] int8_t s2p_new ; [L96] _Bool side1Failed ; [L97] _Bool side2Failed ; [L98] msg_t side1_written ; [L99] msg_t side2_written ; [L105] static _Bool side1Failed_History_0 ; [L106] static _Bool side1Failed_History_1 ; [L107] static _Bool side1Failed_History_2 ; [L108] static _Bool side2Failed_History_0 ; [L109] static _Bool side2Failed_History_1 ; [L110] static _Bool side2Failed_History_2 ; [L111] static int8_t active_side_History_0 ; [L112] static int8_t active_side_History_1 ; [L113] static int8_t active_side_History_2 ; [L114] static msg_t manual_selection_History_0 ; [L115] static msg_t manual_selection_History_1 ; [L116] static msg_t manual_selection_History_2 ; [L466] 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}; [L588] int c1 ; [L589] int i2 ; [L592] c1 = 0 [L593] side1Failed = __VERIFIER_nondet_bool() [L594] side2Failed = __VERIFIER_nondet_bool() [L595] side1_written = __VERIFIER_nondet_char() [L596] side2_written = __VERIFIER_nondet_char() [L597] side1Failed_History_0 = __VERIFIER_nondet_bool() [L598] side1Failed_History_1 = __VERIFIER_nondet_bool() [L599] side1Failed_History_2 = __VERIFIER_nondet_bool() [L600] side2Failed_History_0 = __VERIFIER_nondet_bool() [L601] side2Failed_History_1 = __VERIFIER_nondet_bool() [L602] side2Failed_History_2 = __VERIFIER_nondet_bool() [L603] active_side_History_0 = __VERIFIER_nondet_char() [L604] active_side_History_1 = __VERIFIER_nondet_char() [L605] active_side_History_2 = __VERIFIER_nondet_char() [L606] manual_selection_History_0 = __VERIFIER_nondet_char() [L607] manual_selection_History_1 = __VERIFIER_nondet_char() [L608] manual_selection_History_2 = __VERIFIER_nondet_char() [L609] CALL, EXPR init() [L242] COND FALSE !((int )side1Failed_History_0 != 0) [L245] COND FALSE !((int )side2Failed_History_0 != 0) [L248] COND FALSE !((int )active_side_History_0 != -2) [L251] COND FALSE !((int )manual_selection_History_0 != 0) [L254] COND FALSE !((int )side1Failed_History_1 != 0) [L257] COND FALSE !((int )side2Failed_History_1 != 0) [L260] COND FALSE !((int )active_side_History_1 != -2) [L263] COND FALSE !((int )manual_selection_History_1 != 0) [L266] COND FALSE !((int )side1Failed_History_2 != 0) [L269] COND FALSE !((int )side2Failed_History_2 != 0) [L272] COND FALSE !((int )active_side_History_2 != -2) [L275] COND FALSE !((int )manual_selection_History_2 != 0) [L278] return (1); [L609] RET, EXPR init() [L609] i2 = init() [L610] CALL assume_abort_if_not(i2) [L103] COND FALSE !(!cond) [L610] RET assume_abort_if_not(i2) [L611] cs1_old = nomsg [L612] cs1_new = nomsg [L613] cs2_old = nomsg [L614] cs2_new = nomsg [L615] s1s2_old = nomsg [L616] s1s2_new = nomsg [L617] s1s1_old = nomsg [L618] s1s1_new = nomsg [L619] s2s1_old = nomsg [L620] s2s1_new = nomsg [L621] s2s2_old = nomsg [L622] s2s2_new = nomsg [L623] s1p_old = nomsg [L624] s1p_new = nomsg [L625] s2p_old = nomsg [L626] s2p_new = nomsg [L627] i2 = 0 [L628] COND TRUE i2 < 10 [L630] CALL Console_task_each_pals_period() [L296] msg_t manual_selection ; [L297] char tmp ; [L300] tmp = __VERIFIER_nondet_char() [L301] manual_selection = tmp [L302] CALL write_manual_selection_history(manual_selection) [L212] manual_selection_History_2 = manual_selection_History_1 [L213] manual_selection_History_1 = manual_selection_History_0 [L214] manual_selection_History_0 = val [L302] RET write_manual_selection_history(manual_selection) [L303] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L303] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L304] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L304] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L305] manual_selection = (msg_t )0 [L630] RET Console_task_each_pals_period() [L631] CALL Side1_activestandby_task_each_pals_period() [L311] int8_t side1 ; [L312] int8_t side2 ; [L313] msg_t manual_selection ; [L314] int8_t next_state ; [L317] side1 = nomsg [L318] side2 = nomsg [L319] manual_selection = (msg_t )0 [L320] side1Failed = __VERIFIER_nondet_bool() [L321] CALL write_side1_failed_history(side1Failed) [L122] side1Failed_History_2 = side1Failed_History_1 [L123] side1Failed_History_1 = side1Failed_History_0 [L124] side1Failed_History_0 = val [L321] RET write_side1_failed_history(side1Failed) [L322] COND FALSE !(\read(side1Failed)) [L329] side1 = s1s1_old [L330] s1s1_old = nomsg [L331] side2 = s2s1_old [L332] s2s1_old = nomsg [L333] manual_selection = cs1_old [L334] cs1_old = nomsg [L335] COND TRUE (int )side1 == (int )side2 [L336] next_state = (int8_t )1 [L359] EXPR next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L359] s1s1_new = next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L360] EXPR next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L360] s1s2_new = next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L361] EXPR next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L361] s1p_new = next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L362] side1_written = next_state [L631] RET Side1_activestandby_task_each_pals_period() [L632] CALL Side2_activestandby_task_each_pals_period() [L368] int8_t side1 ; [L369] int8_t side2 ; [L370] msg_t manual_selection ; [L371] int8_t next_state ; [L374] side1 = nomsg [L375] side2 = nomsg [L376] manual_selection = (msg_t )0 [L377] side2Failed = __VERIFIER_nondet_bool() [L378] CALL write_side2_failed_history(side2Failed) [L152] side2Failed_History_2 = side2Failed_History_1 [L153] side2Failed_History_1 = side2Failed_History_0 [L154] side2Failed_History_0 = val [L378] RET write_side2_failed_history(side2Failed) [L379] COND FALSE !(\read(side2Failed)) [L386] side1 = s1s2_old [L387] s1s2_old = nomsg [L388] side2 = s2s2_old [L389] s2s2_old = nomsg [L390] manual_selection = cs2_old [L391] cs2_old = nomsg [L392] COND TRUE (int )side1 == (int )side2 [L393] next_state = (int8_t )1 [L416] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L416] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L417] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L417] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L418] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L418] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L419] side2_written = next_state [L632] RET Side2_activestandby_task_each_pals_period() [L633] CALL Pendulum_prism_task_each_pals_period() [L425] int8_t active_side ; [L426] int8_t tmp ; [L427] int8_t side1 ; [L428] int8_t side2 ; [L431] CALL, EXPR read_active_side_history((unsigned char)0) [L193] COND TRUE (int )index == 0 [L194] return (active_side_History_0); [L431] RET, EXPR read_active_side_history((unsigned char)0) [L431] tmp = read_active_side_history((unsigned char)0) [L432] active_side = tmp [L433] side1 = nomsg [L434] side2 = nomsg [L435] side1 = s1p_old [L436] s1p_old = nomsg [L437] side2 = s2p_old [L438] s2p_old = nomsg [L439] COND FALSE !((int )side1 == 1) [L442] COND FALSE !((int )side2 == 1) [L445] COND FALSE !((int )side1 == 0) [L453] COND TRUE (int )side1 == (int )nomsg [L454] COND FALSE !((int )side2 == 0) [L457] active_side = (int8_t )0 [L462] CALL write_active_side_history(active_side) [L182] active_side_History_2 = active_side_History_1 [L183] active_side_History_1 = active_side_History_0 [L184] active_side_History_0 = val [L462] RET write_active_side_history(active_side) [L633] RET Pendulum_prism_task_each_pals_period() [L634] cs1_old = cs1_new [L635] cs1_new = nomsg [L636] cs2_old = cs2_new [L637] cs2_new = nomsg [L638] s1s2_old = s1s2_new [L639] s1s2_new = nomsg [L640] s1s1_old = s1s1_new [L641] s1s1_new = nomsg [L642] s2s1_old = s2s1_new [L643] s2s1_new = nomsg [L644] s2s2_old = s2s2_new [L645] s2s2_new = nomsg [L646] s1p_old = s1p_new [L647] s1p_new = nomsg [L648] s2p_old = s2p_new [L649] s2p_new = nomsg [L650] CALL, EXPR check() [L469] int tmp ; [L470] msg_t tmp___0 ; [L471] _Bool tmp___1 ; [L472] _Bool tmp___2 ; [L473] _Bool tmp___3 ; [L474] _Bool tmp___4 ; [L475] int8_t tmp___5 ; [L476] _Bool tmp___6 ; [L477] _Bool tmp___7 ; [L478] _Bool tmp___8 ; [L479] int8_t tmp___9 ; [L480] _Bool tmp___10 ; [L481] _Bool tmp___11 ; [L482] _Bool tmp___12 ; [L483] msg_t tmp___13 ; [L484] _Bool tmp___14 ; [L485] _Bool tmp___15 ; [L486] _Bool tmp___16 ; [L487] _Bool tmp___17 ; [L488] int8_t tmp___18 ; [L489] int8_t tmp___19 ; [L490] int8_t tmp___20 ; [L493] COND TRUE ! side1Failed [L494] tmp = 1 [L501] CALL assume_abort_if_not((_Bool )tmp) [L103] COND FALSE !(!cond) [L501] RET assume_abort_if_not((_Bool )tmp) [L502] CALL, EXPR read_manual_selection_history((unsigned char)1) [L223] COND FALSE !((int )index == 0) [L226] COND TRUE (int )index == 1 [L227] return (manual_selection_History_1); [L502] RET, EXPR read_manual_selection_history((unsigned char)1) [L502] tmp___0 = read_manual_selection_history((unsigned char)1) [L503] COND TRUE ! tmp___0 [L504] CALL, EXPR read_side1_failed_history((unsigned char)1) [L133] COND FALSE !((int )index == 0) [L136] COND TRUE (int )index == 1 [L137] return (side1Failed_History_1); [L504] RET, EXPR read_side1_failed_history((unsigned char)1) [L504] tmp___1 = read_side1_failed_history((unsigned char)1) [L505] COND TRUE ! tmp___1 [L506] CALL, EXPR read_side1_failed_history((unsigned char)0) [L133] COND TRUE (int )index == 0 [L134] return (side1Failed_History_0); [L506] RET, EXPR read_side1_failed_history((unsigned char)0) [L506] tmp___2 = read_side1_failed_history((unsigned char)0) [L507] COND TRUE ! tmp___2 [L508] CALL, EXPR read_side2_failed_history((unsigned char)1) [L163] COND FALSE !((int )index == 0) [L166] COND TRUE (int )index == 1 [L167] return (side2Failed_History_1); [L508] RET, EXPR read_side2_failed_history((unsigned char)1) [L508] tmp___3 = read_side2_failed_history((unsigned char)1) [L509] COND TRUE ! tmp___3 [L510] CALL, EXPR read_side2_failed_history((unsigned char)0) [L163] COND TRUE (int )index == 0 [L164] return (side2Failed_History_0); [L510] RET, EXPR read_side2_failed_history((unsigned char)0) [L510] tmp___4 = read_side2_failed_history((unsigned char)0) [L511] COND TRUE ! tmp___4 [L512] COND FALSE !(! ((int )side1_written == 1)) [L517] COND FALSE !(! (! ((int )side1_written == 0))) [L522] COND TRUE ! (! ((int )side1_written == 1)) [L523] COND TRUE ! ((int )side2_written == 0) [L524] return (0); [L650] RET, EXPR check() [L650] c1 = check() [L651] CALL assert(c1) [L663] COND TRUE ! arg [L665] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 20 procedures, 577 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 275.3s, OverallIterations: 26, TraceHistogramMax: 2, AutomataDifference: 229.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16789 SDtfs, 85759 SDslu, 27072 SDs, 0 SdLazy, 78108 SolverSat, 14845 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1908 GetRequests, 818 SyntacticMatches, 16 SemanticMatches, 1074 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11701 ImplicationChecksByTransitivity, 81.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6487occurred 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: 22.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 6058 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...