./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:53:37,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:53:37,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:53:37,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:53:37,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:53:37,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:53:37,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:53:37,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:53:37,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:53:37,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:53:37,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:53:37,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:53:37,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:53:37,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:53:37,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:53:37,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:53:37,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:53:37,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:53:37,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:53:37,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:53:37,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:53:37,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:53:37,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:53:37,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:53:37,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:53:37,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:53:37,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:53:37,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:53:37,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:53:37,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:53:37,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:53:37,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:53:37,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:53:37,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:53:37,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:53:37,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:53:37,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:53:37,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:53:37,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:53:37,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:53:37,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:53:37,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:53:37,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:53:37,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:53:37,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:53:37,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:53:37,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:53:37,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:53:37,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:53:37,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:53:37,854 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:53:37,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:53:37,855 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:53:37,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:53:37,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:53:37,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:53:37,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:53:37,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:53:37,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:53:37,856 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:53:37,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:53:37,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:53:37,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:53:37,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:53:37,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:53:37,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:53:37,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:53:37,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:53:37,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:53:37,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:53:37,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:53:37,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:53:37,859 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:53:37,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:53:37,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:53:37,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:53:37,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e [2021-12-14 14:53:38,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:53:38,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:53:38,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:53:38,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:53:38,156 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:53:38,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2021-12-14 14:53:38,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2203446/838d0746aee54f9196c81f4d91a3ce54/FLAGefbf93ceb [2021-12-14 14:53:38,600 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:53:38,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2021-12-14 14:53:38,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2203446/838d0746aee54f9196c81f4d91a3ce54/FLAGefbf93ceb [2021-12-14 14:53:38,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2203446/838d0746aee54f9196c81f4d91a3ce54 [2021-12-14 14:53:38,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:53:38,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:53:38,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:53:38,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:53:39,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:53:39,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:53:38" (1/1) ... [2021-12-14 14:53:39,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6bca42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39, skipping insertion in model container [2021-12-14 14:53:39,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:53:38" (1/1) ... [2021-12-14 14:53:39,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:53:39,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:53:39,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.11.cil-2.c[671,684] [2021-12-14 14:53:39,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:53:39,404 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:53:39,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.11.cil-2.c[671,684] [2021-12-14 14:53:39,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:53:39,478 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:53:39,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39 WrapperNode [2021-12-14 14:53:39,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:53:39,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:53:39,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:53:39,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:53:39,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,541 INFO L137 Inliner]: procedures = 50, calls = 64, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 795 [2021-12-14 14:53:39,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:53:39,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:53:39,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:53:39,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:53:39,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:53:39,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:53:39,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:53:39,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:53:39,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (1/1) ... [2021-12-14 14:53:39,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:53:39,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:53:39,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 14:53:39,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 14:53:39,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:53:39,715 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 14:53:39,715 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 14:53:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 14:53:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 14:53:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 14:53:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 14:53:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 14:53:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 14:53:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 14:53:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 14:53:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 14:53:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 14:53:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:53:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:53:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:53:39,874 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:53:39,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:53:40,428 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:53:40,437 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:53:40,437 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-14 14:53:40,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:53:40 BoogieIcfgContainer [2021-12-14 14:53:40,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:53:40,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:53:40,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:53:40,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:53:40,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:53:38" (1/3) ... [2021-12-14 14:53:40,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a502b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:53:40, skipping insertion in model container [2021-12-14 14:53:40,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:53:39" (2/3) ... [2021-12-14 14:53:40,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a502b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:53:40, skipping insertion in model container [2021-12-14 14:53:40,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:53:40" (3/3) ... [2021-12-14 14:53:40,447 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-2.c [2021-12-14 14:53:40,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:53:40,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:53:40,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:53:40,497 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 14:53:40,498 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:53:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 326 states have internal predecessors, (538), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 14:53:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:53:40,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:53:40,532 INFO L514 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] [2021-12-14 14:53:40,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:53:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:53:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 972283439, now seen corresponding path program 1 times [2021-12-14 14:53:40,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:53:40,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258479839] [2021-12-14 14:53:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:53:40,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:53:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:53:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:53:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:40,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:53:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:40,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:53:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:40,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:53:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:53:40,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:53:40,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258479839] [2021-12-14 14:53:40,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258479839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:53:40,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:53:40,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 14:53:40,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659383462] [2021-12-14 14:53:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:53:40,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:53:40,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:53:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:53:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 14:53:41,019 INFO L87 Difference]: Start difference. First operand has 357 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 326 states have internal predecessors, (538), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:53:42,527 INFO L93 Difference]: Finished difference Result 836 states and 1389 transitions. [2021-12-14 14:53:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 14:53:42,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:53:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:53:42,543 INFO L225 Difference]: With dead ends: 836 [2021-12-14 14:53:42,544 INFO L226 Difference]: Without dead ends: 483 [2021-12-14 14:53:42,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:53:42,552 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 957 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:53:42,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 1004 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 14:53:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-14 14:53:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352. [2021-12-14 14:53:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 320 states have (on average 1.571875) internal successors, (503), 321 states have internal predecessors, (503), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 14:53:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 553 transitions. [2021-12-14 14:53:42,629 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 553 transitions. Word has length 166 [2021-12-14 14:53:42,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:53:42,630 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 553 transitions. [2021-12-14 14:53:42,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 553 transitions. [2021-12-14 14:53:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:53:42,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:53:42,634 INFO L514 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] [2021-12-14 14:53:42,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 14:53:42,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:53:42,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:53:42,635 INFO L85 PathProgramCache]: Analyzing trace with hash 627455277, now seen corresponding path program 1 times [2021-12-14 14:53:42,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:53:42,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050783397] [2021-12-14 14:53:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:53:42,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:53:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:53:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:42,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:53:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:42,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:53:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:53:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:53:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:53:42,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:53:42,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050783397] [2021-12-14 14:53:42,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050783397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:53:42,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:53:42,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 14:53:42,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269099791] [2021-12-14 14:53:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:53:42,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:53:42,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:53:42,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:53:42,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 14:53:42,813 INFO L87 Difference]: Start difference. First operand 352 states and 553 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:44,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:53:44,101 INFO L93 Difference]: Finished difference Result 819 states and 1305 transitions. [2021-12-14 14:53:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 14:53:44,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:53:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:53:44,105 INFO L225 Difference]: With dead ends: 819 [2021-12-14 14:53:44,105 INFO L226 Difference]: Without dead ends: 483 [2021-12-14 14:53:44,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:53:44,108 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 944 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:53:44,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 990 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:53:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-14 14:53:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352. [2021-12-14 14:53:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 320 states have (on average 1.56875) internal successors, (502), 321 states have internal predecessors, (502), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 14:53:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 552 transitions. [2021-12-14 14:53:44,143 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 552 transitions. Word has length 166 [2021-12-14 14:53:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:53:44,143 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 552 transitions. [2021-12-14 14:53:44,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:44,144 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 552 transitions. [2021-12-14 14:53:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:53:44,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:53:44,146 INFO L514 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] [2021-12-14 14:53:44,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 14:53:44,147 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:53:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:53:44,147 INFO L85 PathProgramCache]: Analyzing trace with hash 241592875, now seen corresponding path program 1 times [2021-12-14 14:53:44,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:53:44,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395287210] [2021-12-14 14:53:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:53:44,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:53:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:53:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:53:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:53:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:53:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:53:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:53:44,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:53:44,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395287210] [2021-12-14 14:53:44,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395287210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:53:44,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:53:44,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:53:44,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221019471] [2021-12-14 14:53:44,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:53:44,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:53:44,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:53:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:53:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:53:44,358 INFO L87 Difference]: Start difference. First operand 352 states and 552 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:53:46,899 INFO L93 Difference]: Finished difference Result 1296 states and 2079 transitions. [2021-12-14 14:53:46,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 14:53:46,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:53:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:53:46,905 INFO L225 Difference]: With dead ends: 1296 [2021-12-14 14:53:46,906 INFO L226 Difference]: Without dead ends: 963 [2021-12-14 14:53:46,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:53:46,909 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 1437 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:53:46,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 1595 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 14:53:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-12-14 14:53:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 702. [2021-12-14 14:53:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 643 states have (on average 1.5816485225505443) internal successors, (1017), 645 states have internal predecessors, (1017), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 14:53:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1110 transitions. [2021-12-14 14:53:46,961 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1110 transitions. Word has length 166 [2021-12-14 14:53:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:53:46,963 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1110 transitions. [2021-12-14 14:53:46,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1110 transitions. [2021-12-14 14:53:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:53:46,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:53:46,973 INFO L514 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] [2021-12-14 14:53:46,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 14:53:46,973 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:53:46,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:53:46,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1241179055, now seen corresponding path program 1 times [2021-12-14 14:53:46,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:53:46,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826577658] [2021-12-14 14:53:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:53:46,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:53:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:53:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:47,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:53:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:53:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:47,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:53:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:53:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:53:47,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:53:47,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826577658] [2021-12-14 14:53:47,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826577658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:53:47,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:53:47,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:53:47,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429073422] [2021-12-14 14:53:47,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:53:47,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:53:47,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:53:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:53:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:53:47,136 INFO L87 Difference]: Start difference. First operand 702 states and 1110 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:50,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:53:50,346 INFO L93 Difference]: Finished difference Result 2144 states and 3444 transitions. [2021-12-14 14:53:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:53:50,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:53:50,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:53:50,359 INFO L225 Difference]: With dead ends: 2144 [2021-12-14 14:53:50,360 INFO L226 Difference]: Without dead ends: 1461 [2021-12-14 14:53:50,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:53:50,364 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 1462 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 14:53:50,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 2741 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 14:53:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-12-14 14:53:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1027. [2021-12-14 14:53:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 941 states have (on average 1.5749202975557917) internal successors, (1482), 944 states have internal predecessors, (1482), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2021-12-14 14:53:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1617 transitions. [2021-12-14 14:53:50,441 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1617 transitions. Word has length 166 [2021-12-14 14:53:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:53:50,442 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1617 transitions. [2021-12-14 14:53:50,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1617 transitions. [2021-12-14 14:53:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:53:50,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:53:50,444 INFO L514 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] [2021-12-14 14:53:50,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 14:53:50,445 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:53:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:53:50,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1579466605, now seen corresponding path program 1 times [2021-12-14 14:53:50,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:53:50,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463353290] [2021-12-14 14:53:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:53:50,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:53:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:50,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:53:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:53:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:53:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:53:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:53:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:53:50,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:53:50,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463353290] [2021-12-14 14:53:50,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463353290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:53:50,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:53:50,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:53:50,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016889493] [2021-12-14 14:53:50,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:53:50,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:53:50,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:53:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:53:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:53:50,622 INFO L87 Difference]: Start difference. First operand 1027 states and 1617 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:53:53,662 INFO L93 Difference]: Finished difference Result 3394 states and 5439 transitions. [2021-12-14 14:53:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:53:53,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:53:53,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:53:53,677 INFO L225 Difference]: With dead ends: 3394 [2021-12-14 14:53:53,677 INFO L226 Difference]: Without dead ends: 2386 [2021-12-14 14:53:53,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:53:53,684 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 1459 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-14 14:53:53,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 2729 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 14:53:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2021-12-14 14:53:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1678. [2021-12-14 14:53:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1538 states have (on average 1.568920676202861) internal successors, (2413), 1543 states have internal predecessors, (2413), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2021-12-14 14:53:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2636 transitions. [2021-12-14 14:53:53,821 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2636 transitions. Word has length 166 [2021-12-14 14:53:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:53:53,821 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 2636 transitions. [2021-12-14 14:53:53,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2636 transitions. [2021-12-14 14:53:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:53:53,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:53:53,825 INFO L514 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] [2021-12-14 14:53:53,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 14:53:53,826 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:53:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:53:53,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2006021103, now seen corresponding path program 1 times [2021-12-14 14:53:53,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:53:53,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047773841] [2021-12-14 14:53:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:53:53,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:53:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:53:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:53:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:53,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:53:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:53,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:53:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:53:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:53:53,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:53:53,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047773841] [2021-12-14 14:53:53,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047773841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:53:53,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:53:53,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:53:53,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825873504] [2021-12-14 14:53:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:53:53,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:53:53,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:53:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:53:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:53:53,977 INFO L87 Difference]: Start difference. First operand 1678 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:53:57,012 INFO L93 Difference]: Finished difference Result 5797 states and 9250 transitions. [2021-12-14 14:53:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:53:57,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:53:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:53:57,030 INFO L225 Difference]: With dead ends: 5797 [2021-12-14 14:53:57,030 INFO L226 Difference]: Without dead ends: 4138 [2021-12-14 14:53:57,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:53:57,037 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 1455 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-14 14:53:57,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 2725 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 14:53:57,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2021-12-14 14:53:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 2981. [2021-12-14 14:53:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2733 states have (on average 1.5642151481888036) internal successors, (4275), 2742 states have internal predecessors, (4275), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 14:53:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4680 transitions. [2021-12-14 14:53:57,210 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4680 transitions. Word has length 166 [2021-12-14 14:53:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:53:57,211 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 4680 transitions. [2021-12-14 14:53:57,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:53:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4680 transitions. [2021-12-14 14:53:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:53:57,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:53:57,215 INFO L514 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] [2021-12-14 14:53:57,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 14:53:57,215 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:53:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:53:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1465591597, now seen corresponding path program 1 times [2021-12-14 14:53:57,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:53:57,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812922500] [2021-12-14 14:53:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:53:57,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:53:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:57,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:53:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:53:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:53:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:53:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:57,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:53:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:53:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:53:57,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:53:57,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812922500] [2021-12-14 14:53:57,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812922500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:53:57,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:53:57,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:53:57,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205600707] [2021-12-14 14:53:57,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:53:57,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:53:57,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:53:57,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:53:57,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:53:57,417 INFO L87 Difference]: Start difference. First operand 2981 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:54:00,397 INFO L93 Difference]: Finished difference Result 10602 states and 16888 transitions. [2021-12-14 14:54:00,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:54:00,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:54:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:54:00,438 INFO L225 Difference]: With dead ends: 10602 [2021-12-14 14:54:00,438 INFO L226 Difference]: Without dead ends: 7640 [2021-12-14 14:54:00,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:54:00,451 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 1451 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:54:00,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 2721 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 14:54:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2021-12-14 14:54:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 5592. [2021-12-14 14:54:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5128 states have (on average 1.56103744149766) internal successors, (8005), 5145 states have internal predecessors, (8005), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2021-12-14 14:54:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 8792 transitions. [2021-12-14 14:54:00,851 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 8792 transitions. Word has length 166 [2021-12-14 14:54:00,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:54:00,852 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 8792 transitions. [2021-12-14 14:54:00,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 8792 transitions. [2021-12-14 14:54:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:54:00,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:54:00,857 INFO L514 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] [2021-12-14 14:54:00,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 14:54:00,857 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:54:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:54:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1309611055, now seen corresponding path program 1 times [2021-12-14 14:54:00,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:54:00,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349831856] [2021-12-14 14:54:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:54:00,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:54:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:54:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:54:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:00,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:54:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:54:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:54:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:54:01,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:54:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349831856] [2021-12-14 14:54:01,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349831856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:54:01,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:54:01,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:54:01,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335681767] [2021-12-14 14:54:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:54:01,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:54:01,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:54:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:54:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:54:01,008 INFO L87 Difference]: Start difference. First operand 5592 states and 8792 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:54:04,373 INFO L93 Difference]: Finished difference Result 20211 states and 32222 transitions. [2021-12-14 14:54:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:54:04,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:54:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:54:04,482 INFO L225 Difference]: With dead ends: 20211 [2021-12-14 14:54:04,482 INFO L226 Difference]: Without dead ends: 14638 [2021-12-14 14:54:04,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:54:04,505 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 1450 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2828 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:54:04,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 2715 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2828 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 14:54:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14638 states. [2021-12-14 14:54:05,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14638 to 10827. [2021-12-14 14:54:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10827 states, 9931 states have (on average 1.5590574967274191) internal successors, (15483), 9964 states have internal predecessors, (15483), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-12-14 14:54:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10827 states to 10827 states and 17088 transitions. [2021-12-14 14:54:05,261 INFO L78 Accepts]: Start accepts. Automaton has 10827 states and 17088 transitions. Word has length 166 [2021-12-14 14:54:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:54:05,261 INFO L470 AbstractCegarLoop]: Abstraction has 10827 states and 17088 transitions. [2021-12-14 14:54:05,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 10827 states and 17088 transitions. [2021-12-14 14:54:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:54:05,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:54:05,271 INFO L514 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] [2021-12-14 14:54:05,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 14:54:05,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:54:05,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:54:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1720221421, now seen corresponding path program 1 times [2021-12-14 14:54:05,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:54:05,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133479124] [2021-12-14 14:54:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:54:05,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:54:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:54:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:54:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:54:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:54:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:54:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:54:05,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:54:05,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133479124] [2021-12-14 14:54:05,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133479124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:54:05,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:54:05,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:54:05,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251507402] [2021-12-14 14:54:05,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:54:05,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:54:05,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:54:05,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:54:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:54:05,434 INFO L87 Difference]: Start difference. First operand 10827 states and 17088 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:54:09,396 INFO L93 Difference]: Finished difference Result 39397 states and 63020 transitions. [2021-12-14 14:54:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:54:09,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:54:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:54:09,508 INFO L225 Difference]: With dead ends: 39397 [2021-12-14 14:54:09,509 INFO L226 Difference]: Without dead ends: 28589 [2021-12-14 14:54:09,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:54:09,559 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1445 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:54:09,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 2707 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2808 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 14:54:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28589 states. [2021-12-14 14:54:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28589 to 21359. [2021-12-14 14:54:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21359 states, 19599 states have (on average 1.558599928567784) internal successors, (30547), 19664 states have internal predecessors, (30547), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-14 14:54:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21359 states to 21359 states and 33950 transitions. [2021-12-14 14:54:11,057 INFO L78 Accepts]: Start accepts. Automaton has 21359 states and 33950 transitions. Word has length 166 [2021-12-14 14:54:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:54:11,057 INFO L470 AbstractCegarLoop]: Abstraction has 21359 states and 33950 transitions. [2021-12-14 14:54:11,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:11,058 INFO L276 IsEmpty]: Start isEmpty. Operand 21359 states and 33950 transitions. [2021-12-14 14:54:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:54:11,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:54:11,072 INFO L514 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] [2021-12-14 14:54:11,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 14:54:11,073 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:54:11,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:54:11,076 INFO L85 PathProgramCache]: Analyzing trace with hash -415661781, now seen corresponding path program 1 times [2021-12-14 14:54:11,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:54:11,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022205282] [2021-12-14 14:54:11,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:54:11,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:54:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:54:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:54:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:54:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:54:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:54:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:54:11,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:54:11,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022205282] [2021-12-14 14:54:11,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022205282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:54:11,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:54:11,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:54:11,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961762106] [2021-12-14 14:54:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:54:11,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:54:11,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:54:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:54:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:54:11,229 INFO L87 Difference]: Start difference. First operand 21359 states and 33950 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:16,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:54:16,873 INFO L93 Difference]: Finished difference Result 77835 states and 125344 transitions. [2021-12-14 14:54:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:54:16,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:54:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:54:17,130 INFO L225 Difference]: With dead ends: 77835 [2021-12-14 14:54:17,130 INFO L226 Difference]: Without dead ends: 56495 [2021-12-14 14:54:17,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:54:17,218 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 1444 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:54:17,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 2702 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 14:54:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56495 states. [2021-12-14 14:54:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56495 to 42484. [2021-12-14 14:54:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42484 states, 38996 states have (on average 1.5582367422299723) internal successors, (60765), 39125 states have internal predecessors, (60765), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2021-12-14 14:54:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42484 states to 42484 states and 68250 transitions. [2021-12-14 14:54:19,989 INFO L78 Accepts]: Start accepts. Automaton has 42484 states and 68250 transitions. Word has length 166 [2021-12-14 14:54:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:54:19,990 INFO L470 AbstractCegarLoop]: Abstraction has 42484 states and 68250 transitions. [2021-12-14 14:54:19,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 42484 states and 68250 transitions. [2021-12-14 14:54:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 14:54:20,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:54:20,011 INFO L514 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] [2021-12-14 14:54:20,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 14:54:20,012 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:54:20,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:54:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash -346013907, now seen corresponding path program 1 times [2021-12-14 14:54:20,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:54:20,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322742011] [2021-12-14 14:54:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:54:20,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:54:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 14:54:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:20,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 14:54:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:20,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:54:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:20,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:54:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 14:54:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:54:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:54:20,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:54:20,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322742011] [2021-12-14 14:54:20,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322742011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:54:20,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:54:20,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:54:20,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845908789] [2021-12-14 14:54:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:54:20,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:54:20,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:54:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:54:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:54:20,158 INFO L87 Difference]: Start difference. First operand 42484 states and 68250 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 14:54:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:54:28,452 INFO L93 Difference]: Finished difference Result 154710 states and 251838 transitions. [2021-12-14 14:54:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:54:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 166 [2021-12-14 14:54:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:54:29,227 INFO L225 Difference]: With dead ends: 154710 [2021-12-14 14:54:29,228 INFO L226 Difference]: Without dead ends: 112245 [2021-12-14 14:54:29,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:54:29,344 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 1443 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 2792 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:54:29,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 2697 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2792 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 14:54:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112245 states.