./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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.07.cil-1.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 a6baa92d18991a792383fc99c5c300f37f700ba00714b15a3dbe7d2191a67ca9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:03:57,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:03:57,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:03:57,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:03:57,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:03:57,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:03:57,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:03:57,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:03:57,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:03:57,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:03:57,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:03:57,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:03:57,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:03:57,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:03:57,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:03:57,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:03:57,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:03:57,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:03:57,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:03:57,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:03:57,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:03:57,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:03:57,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:03:57,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:03:57,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:03:57,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:03:57,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:03:57,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:03:57,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:03:57,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:03:57,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:03:57,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:03:57,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:03:57,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:03:57,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:03:57,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:03:57,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:03:57,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:03:57,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:03:57,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:03:57,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:03:57,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:03:57,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:03:57,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:03:57,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:03:57,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:03:57,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:03:57,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:03:57,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:03:57,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:03:57,835 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:03:57,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:03:57,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:03:57,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:03:57,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:03:57,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:03:57,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:03:57,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:03:57,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:03:57,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:03:57,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:03:57,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:03:57,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:03:57,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:03:57,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:03:57,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:03:57,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:03:57,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:03:57,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:03:57,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:03:57,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:03:57,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:03:57,845 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:03:57,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:03:57,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:03:57,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6baa92d18991a792383fc99c5c300f37f700ba00714b15a3dbe7d2191a67ca9 [2021-12-28 01:03:58,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:03:58,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:03:58,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:03:58,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:03:58,194 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:03:58,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.07.cil-1.c [2021-12-28 01:03:58,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b20c0a9/759709f6e22044bfb5e60cf3950a1c1e/FLAG96ed2aa9e [2021-12-28 01:03:58,708 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:03:58,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-1.c [2021-12-28 01:03:58,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b20c0a9/759709f6e22044bfb5e60cf3950a1c1e/FLAG96ed2aa9e [2021-12-28 01:03:59,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b20c0a9/759709f6e22044bfb5e60cf3950a1c1e [2021-12-28 01:03:59,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:03:59,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:03:59,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:03:59,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:03:59,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:03:59,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da8e7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59, skipping insertion in model container [2021-12-28 01:03:59,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:03:59,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:03:59,272 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.07.cil-1.c[671,684] [2021-12-28 01:03:59,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:03:59,366 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:03:59,408 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.07.cil-1.c[671,684] [2021-12-28 01:03:59,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:03:59,475 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:03:59,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59 WrapperNode [2021-12-28 01:03:59,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:03:59,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:03:59,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:03:59,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:03:59,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,526 INFO L137 Inliner]: procedures = 42, calls = 52, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 563 [2021-12-28 01:03:59,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:03:59,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:03:59,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:03:59,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:03:59,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:03:59,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:03:59,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:03:59,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:03:59,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (1/1) ... [2021-12-28 01:03:59,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:03:59,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:03:59,615 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) [2021-12-28 01:03:59,623 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 [2021-12-28 01:03:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:03:59,647 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:03:59,647 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:03:59,647 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:03:59,647 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:03:59,647 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:03:59,647 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:03:59,647 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:03:59,648 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:03:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:03:59,648 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:03:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:03:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:03:59,648 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:03:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:03:59,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:03:59,734 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:03:59,736 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:04:00,309 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:04:00,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:04:00,330 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-28 01:04:00,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:04:00 BoogieIcfgContainer [2021-12-28 01:04:00,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:04:00,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:04:00,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:04:00,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:04:00,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:03:59" (1/3) ... [2021-12-28 01:04:00,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f55286d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:04:00, skipping insertion in model container [2021-12-28 01:04:00,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:59" (2/3) ... [2021-12-28 01:04:00,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f55286d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:04:00, skipping insertion in model container [2021-12-28 01:04:00,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:04:00" (3/3) ... [2021-12-28 01:04:00,345 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-1.c [2021-12-28 01:04:00,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:04:00,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:04:00,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:04:00,411 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 [2021-12-28 01:04:00,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:04:00,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 230 states have internal predecessors, (374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-28 01:04:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:00,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:00,459 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] [2021-12-28 01:04:00,460 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:00,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1244589581, now seen corresponding path program 1 times [2021-12-28 01:04:00,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:00,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386144325] [2021-12-28 01:04:00,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:00,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:00,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:00,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386144325] [2021-12-28 01:04:00,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386144325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:00,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:00,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:04:00,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501383263] [2021-12-28 01:04:00,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:00,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:04:00,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:00,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:04:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:04:00,981 INFO L87 Difference]: Start difference. First operand has 257 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 230 states have internal predecessors, (374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-12-28 01:04:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:01,957 INFO L93 Difference]: Finished difference Result 592 states and 969 transitions. [2021-12-28 01:04:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:04:01,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:01,981 INFO L225 Difference]: With dead ends: 592 [2021-12-28 01:04:01,981 INFO L226 Difference]: Without dead ends: 339 [2021-12-28 01:04:01,987 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 [2021-12-28 01:04:01,989 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 657 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:01,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 697 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 01:04:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-12-28 01:04:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 252. [2021-12-28 01:04:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 224 states have (on average 1.5491071428571428) internal successors, (347), 225 states have internal predecessors, (347), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-28 01:04:02,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 389 transitions. [2021-12-28 01:04:02,055 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 389 transitions. Word has length 122 [2021-12-28 01:04:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:02,055 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 389 transitions. [2021-12-28 01:04:02,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-12-28 01:04:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 389 transitions. [2021-12-28 01:04:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:02,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:02,059 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] [2021-12-28 01:04:02,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:04:02,060 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash -482555381, now seen corresponding path program 1 times [2021-12-28 01:04:02,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:02,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667382346] [2021-12-28 01:04:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:02,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:02,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:02,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667382346] [2021-12-28 01:04:02,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667382346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:02,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:02,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:04:02,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137632072] [2021-12-28 01:04:02,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:02,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:04:02,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:04:02,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:04:02,265 INFO L87 Difference]: Start difference. First operand 252 states and 389 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-12-28 01:04:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:03,973 INFO L93 Difference]: Finished difference Result 908 states and 1436 transitions. [2021-12-28 01:04:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:04:03,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:03,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:03,978 INFO L225 Difference]: With dead ends: 908 [2021-12-28 01:04:03,978 INFO L226 Difference]: Without dead ends: 671 [2021-12-28 01:04:03,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:04:03,981 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 981 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:03,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1085 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:04:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-12-28 01:04:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 498. [2021-12-28 01:04:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 447 states have (on average 1.5615212527964206) internal successors, (698), 449 states have internal predecessors, (698), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-28 01:04:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 775 transitions. [2021-12-28 01:04:04,031 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 775 transitions. Word has length 122 [2021-12-28 01:04:04,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:04,032 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 775 transitions. [2021-12-28 01:04:04,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-12-28 01:04:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 775 transitions. [2021-12-28 01:04:04,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:04,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:04,034 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] [2021-12-28 01:04:04,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:04:04,035 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1208119409, now seen corresponding path program 1 times [2021-12-28 01:04:04,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:04,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146250814] [2021-12-28 01:04:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:04,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:04,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:04,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:04,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146250814] [2021-12-28 01:04:04,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146250814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:04,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:04,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:04,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267194893] [2021-12-28 01:04:04,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:04,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:04,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:04,231 INFO L87 Difference]: Start difference. First operand 498 states and 775 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:06,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:06,225 INFO L93 Difference]: Finished difference Result 1498 states and 2371 transitions. [2021-12-28 01:04:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:04:06,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:06,234 INFO L225 Difference]: With dead ends: 1498 [2021-12-28 01:04:06,235 INFO L226 Difference]: Without dead ends: 1015 [2021-12-28 01:04:06,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:04:06,238 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 994 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:06,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 1875 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:04:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-12-28 01:04:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 728. [2021-12-28 01:04:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 654 states have (on average 1.555045871559633) internal successors, (1017), 657 states have internal predecessors, (1017), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-28 01:04:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1128 transitions. [2021-12-28 01:04:06,294 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1128 transitions. Word has length 122 [2021-12-28 01:04:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:06,294 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 1128 transitions. [2021-12-28 01:04:06,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:06,295 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1128 transitions. [2021-12-28 01:04:06,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:06,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:06,297 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] [2021-12-28 01:04:06,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:04:06,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1053453841, now seen corresponding path program 1 times [2021-12-28 01:04:06,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:06,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599011824] [2021-12-28 01:04:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:06,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:06,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:06,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599011824] [2021-12-28 01:04:06,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599011824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:06,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:06,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:06,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488896494] [2021-12-28 01:04:06,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:06,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:06,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:06,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:06,433 INFO L87 Difference]: Start difference. First operand 728 states and 1128 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:08,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:08,421 INFO L93 Difference]: Finished difference Result 2365 states and 3732 transitions. [2021-12-28 01:04:08,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:04:08,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:08,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:08,430 INFO L225 Difference]: With dead ends: 2365 [2021-12-28 01:04:08,430 INFO L226 Difference]: Without dead ends: 1652 [2021-12-28 01:04:08,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:04:08,434 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 990 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:08,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 1868 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:04:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-12-28 01:04:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1191. [2021-12-28 01:04:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1071 states have (on average 1.549953314659197) internal successors, (1660), 1076 states have internal predecessors, (1660), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-28 01:04:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1843 transitions. [2021-12-28 01:04:08,513 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1843 transitions. Word has length 122 [2021-12-28 01:04:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:08,514 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1843 transitions. [2021-12-28 01:04:08,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1843 transitions. [2021-12-28 01:04:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:08,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:08,516 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] [2021-12-28 01:04:08,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:04:08,517 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:08,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:08,518 INFO L85 PathProgramCache]: Analyzing trace with hash -813254833, now seen corresponding path program 1 times [2021-12-28 01:04:08,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:08,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790407833] [2021-12-28 01:04:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:08,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:08,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:08,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790407833] [2021-12-28 01:04:08,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790407833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:08,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:08,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:08,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179602204] [2021-12-28 01:04:08,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:08,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:08,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:08,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:08,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:08,628 INFO L87 Difference]: Start difference. First operand 1191 states and 1843 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:10,559 INFO L93 Difference]: Finished difference Result 4042 states and 6355 transitions. [2021-12-28 01:04:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:04:10,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:10,574 INFO L225 Difference]: With dead ends: 4042 [2021-12-28 01:04:10,574 INFO L226 Difference]: Without dead ends: 2866 [2021-12-28 01:04:10,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:04:10,580 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 989 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:10,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 1863 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:04:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-12-28 01:04:10,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2120. [2021-12-28 01:04:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 1908 states have (on average 1.5461215932914045) internal successors, (2950), 1917 states have internal predecessors, (2950), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-28 01:04:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3283 transitions. [2021-12-28 01:04:10,727 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3283 transitions. Word has length 122 [2021-12-28 01:04:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:10,727 INFO L470 AbstractCegarLoop]: Abstraction has 2120 states and 3283 transitions. [2021-12-28 01:04:10,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3283 transitions. [2021-12-28 01:04:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:10,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:10,731 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] [2021-12-28 01:04:10,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:04:10,732 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:10,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2120397231, now seen corresponding path program 1 times [2021-12-28 01:04:10,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:10,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436028154] [2021-12-28 01:04:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:10,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:10,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:10,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436028154] [2021-12-28 01:04:10,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436028154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:10,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:10,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:10,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357848823] [2021-12-28 01:04:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:10,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:10,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:10,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:10,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:10,873 INFO L87 Difference]: Start difference. First operand 2120 states and 3283 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:12,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:12,824 INFO L93 Difference]: Finished difference Result 7397 states and 11621 transitions. [2021-12-28 01:04:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:04:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:12,851 INFO L225 Difference]: With dead ends: 7397 [2021-12-28 01:04:12,852 INFO L226 Difference]: Without dead ends: 5292 [2021-12-28 01:04:12,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:04:12,862 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 988 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:12,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 1858 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:04:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2021-12-28 01:04:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 3985. [2021-12-28 01:04:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 3589 states have (on average 1.5436054611312344) internal successors, (5540), 3606 states have internal predecessors, (5540), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-28 01:04:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 6191 transitions. [2021-12-28 01:04:13,145 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 6191 transitions. Word has length 122 [2021-12-28 01:04:13,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:13,146 INFO L470 AbstractCegarLoop]: Abstraction has 3985 states and 6191 transitions. [2021-12-28 01:04:13,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:13,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 6191 transitions. [2021-12-28 01:04:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:13,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:13,151 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] [2021-12-28 01:04:13,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:04:13,152 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash -222900465, now seen corresponding path program 1 times [2021-12-28 01:04:13,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621248238] [2021-12-28 01:04:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:13,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:13,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:13,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621248238] [2021-12-28 01:04:13,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621248238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:13,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:13,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:13,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75044768] [2021-12-28 01:04:13,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:13,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:13,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:13,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:13,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:13,284 INFO L87 Difference]: Start difference. First operand 3985 states and 6191 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:15,346 INFO L93 Difference]: Finished difference Result 14108 states and 22215 transitions. [2021-12-28 01:04:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:04:15,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:15,395 INFO L225 Difference]: With dead ends: 14108 [2021-12-28 01:04:15,396 INFO L226 Difference]: Without dead ends: 10138 [2021-12-28 01:04:15,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:04:15,417 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 1046 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:15,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 1271 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:04:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2021-12-28 01:04:15,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 7730. [2021-12-28 01:04:15,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7730 states, 6966 states have (on average 1.5420614412862474) internal successors, (10742), 6999 states have internal predecessors, (10742), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-28 01:04:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 12083 transitions. [2021-12-28 01:04:15,948 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 12083 transitions. Word has length 122 [2021-12-28 01:04:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:15,949 INFO L470 AbstractCegarLoop]: Abstraction has 7730 states and 12083 transitions. [2021-12-28 01:04:15,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:15,950 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 12083 transitions. [2021-12-28 01:04:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:15,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:15,957 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] [2021-12-28 01:04:15,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:04:15,958 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 808140433, now seen corresponding path program 1 times [2021-12-28 01:04:15,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:15,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398921378] [2021-12-28 01:04:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:15,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:15,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:16,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:16,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:16,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398921378] [2021-12-28 01:04:16,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398921378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:16,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:16,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:16,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684437202] [2021-12-28 01:04:16,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:16,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:16,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:16,087 INFO L87 Difference]: Start difference. First operand 7730 states and 12083 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:18,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:18,551 INFO L93 Difference]: Finished difference Result 27531 states and 43597 transitions. [2021-12-28 01:04:18,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:04:18,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:18,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:18,658 INFO L225 Difference]: With dead ends: 27531 [2021-12-28 01:04:18,659 INFO L226 Difference]: Without dead ends: 19816 [2021-12-28 01:04:18,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:04:18,695 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 986 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:18,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1848 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:04:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19816 states. [2021-12-28 01:04:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19816 to 15251. [2021-12-28 01:04:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15251 states, 13751 states have (on average 1.5411242818704094) internal successors, (21192), 13816 states have internal predecessors, (21192), 1045 states have call successors, (1045), 390 states have call predecessors, (1045), 454 states have return successors, (1838), 1108 states have call predecessors, (1838), 1045 states have call successors, (1838) [2021-12-28 01:04:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15251 states to 15251 states and 24075 transitions. [2021-12-28 01:04:19,780 INFO L78 Accepts]: Start accepts. Automaton has 15251 states and 24075 transitions. Word has length 122 [2021-12-28 01:04:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:19,781 INFO L470 AbstractCegarLoop]: Abstraction has 15251 states and 24075 transitions. [2021-12-28 01:04:19,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 15251 states and 24075 transitions. [2021-12-28 01:04:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:19,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:19,795 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] [2021-12-28 01:04:19,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:04:19,796 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:19,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1098262833, now seen corresponding path program 1 times [2021-12-28 01:04:19,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:19,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880475005] [2021-12-28 01:04:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:19,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:19,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:19,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:19,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880475005] [2021-12-28 01:04:19,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880475005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:19,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:19,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:19,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108000984] [2021-12-28 01:04:19,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:19,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:19,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:19,921 INFO L87 Difference]: Start difference. First operand 15251 states and 24075 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:24,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:24,282 INFO L93 Difference]: Finished difference Result 61226 states and 97333 transitions. [2021-12-28 01:04:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:04:24,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:24,495 INFO L225 Difference]: With dead ends: 61226 [2021-12-28 01:04:24,495 INFO L226 Difference]: Without dead ends: 45990 [2021-12-28 01:04:24,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:04:24,565 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1279 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:24,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1301 Valid, 1831 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:04:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45990 states. [2021-12-28 01:04:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45990 to 30164. [2021-12-28 01:04:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30164 states, 27256 states have (on average 1.5430730848253595) internal successors, (42058), 27385 states have internal predecessors, (42058), 2005 states have call successors, (2005), 774 states have call predecessors, (2005), 902 states have return successors, (4320), 2132 states have call predecessors, (4320), 2005 states have call successors, (4320) [2021-12-28 01:04:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30164 states to 30164 states and 48383 transitions. [2021-12-28 01:04:26,503 INFO L78 Accepts]: Start accepts. Automaton has 30164 states and 48383 transitions. Word has length 122 [2021-12-28 01:04:26,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:26,503 INFO L470 AbstractCegarLoop]: Abstraction has 30164 states and 48383 transitions. [2021-12-28 01:04:26,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:26,504 INFO L276 IsEmpty]: Start isEmpty. Operand 30164 states and 48383 transitions. [2021-12-28 01:04:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:26,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:26,530 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] [2021-12-28 01:04:26,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:04:26,530 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:26,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash 502808273, now seen corresponding path program 1 times [2021-12-28 01:04:26,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:26,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137807164] [2021-12-28 01:04:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:26,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:26,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:26,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137807164] [2021-12-28 01:04:26,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137807164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:26,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:26,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:26,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603924343] [2021-12-28 01:04:26,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:26,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:26,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:26,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:26,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:26,647 INFO L87 Difference]: Start difference. First operand 30164 states and 48383 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:33,509 INFO L93 Difference]: Finished difference Result 117863 states and 190391 transitions. [2021-12-28 01:04:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:04:33,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:33,950 INFO L225 Difference]: With dead ends: 117863 [2021-12-28 01:04:33,950 INFO L226 Difference]: Without dead ends: 87714 [2021-12-28 01:04:34,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:04:34,064 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1196 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:34,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 1822 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 01:04:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87714 states. [2021-12-28 01:04:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87714 to 60054. [2021-12-28 01:04:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60054 states, 54394 states have (on average 1.5463102548075156) internal successors, (84110), 54651 states have internal predecessors, (84110), 3861 states have call successors, (3861), 1542 states have call predecessors, (3861), 1798 states have return successors, (10678), 4116 states have call predecessors, (10678), 3861 states have call successors, (10678) [2021-12-28 01:04:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60054 states to 60054 states and 98649 transitions. [2021-12-28 01:04:38,272 INFO L78 Accepts]: Start accepts. Automaton has 60054 states and 98649 transitions. Word has length 122 [2021-12-28 01:04:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:38,273 INFO L470 AbstractCegarLoop]: Abstraction has 60054 states and 98649 transitions. [2021-12-28 01:04:38,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 60054 states and 98649 transitions. [2021-12-28 01:04:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:38,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:38,325 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] [2021-12-28 01:04:38,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:04:38,326 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:38,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1854193491, now seen corresponding path program 1 times [2021-12-28 01:04:38,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:38,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579586951] [2021-12-28 01:04:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:38,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:38,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:38,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:38,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:38,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579586951] [2021-12-28 01:04:38,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579586951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:38,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:38,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:38,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989762102] [2021-12-28 01:04:38,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:38,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:38,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:38,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:38,938 INFO L87 Difference]: Start difference. First operand 60054 states and 98649 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:44,476 INFO L93 Difference]: Finished difference Result 137486 states and 231426 transitions. [2021-12-28 01:04:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 01:04:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2021-12-28 01:04:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:44,886 INFO L225 Difference]: With dead ends: 137486 [2021-12-28 01:04:44,887 INFO L226 Difference]: Without dead ends: 77447 [2021-12-28 01:04:45,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:04:45,064 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 821 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:45,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 860 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 01:04:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77447 states. [2021-12-28 01:04:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77447 to 60054. [2021-12-28 01:04:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60054 states, 54394 states have (on average 1.54158546898555) internal successors, (83853), 54651 states have internal predecessors, (83853), 3861 states have call successors, (3861), 1542 states have call predecessors, (3861), 1798 states have return successors, (10678), 4116 states have call predecessors, (10678), 3861 states have call successors, (10678) [2021-12-28 01:04:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60054 states to 60054 states and 98392 transitions. [2021-12-28 01:04:48,727 INFO L78 Accepts]: Start accepts. Automaton has 60054 states and 98392 transitions. Word has length 122 [2021-12-28 01:04:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:48,728 INFO L470 AbstractCegarLoop]: Abstraction has 60054 states and 98392 transitions. [2021-12-28 01:04:48,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2021-12-28 01:04:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 60054 states and 98392 transitions. [2021-12-28 01:04:48,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 01:04:48,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:48,769 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] [2021-12-28 01:04:48,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:04:48,770 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:48,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash 235218577, now seen corresponding path program 1 times [2021-12-28 01:04:48,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:48,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950865264] [2021-12-28 01:04:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:48,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 01:04:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 01:04:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 01:04:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:49,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:49,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950865264] [2021-12-28 01:04:49,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950865264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:49,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:49,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:49,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285740016] [2021-12-28 01:04:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:49,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:49,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:49,071 INFO L87 Difference]: Start difference. First operand 60054 states and 98392 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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)