./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/combinations/Problem05_label42+token_ring.13.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 216404335c43b82447a03ad9d88ac8bc18e7528b04f40169d87fb26955d8753c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:12:18,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:12:18,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:12:18,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:12:18,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:12:18,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:12:18,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:12:18,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:12:18,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:12:18,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:12:18,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:12:18,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:12:18,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:12:18,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:12:18,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:12:18,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:12:18,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:12:18,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:12:18,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:12:18,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:12:18,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:12:18,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:12:18,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:12:18,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:12:18,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:12:18,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:12:18,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:12:18,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:12:18,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:12:18,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:12:18,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:12:18,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:12:18,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:12:18,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:12:18,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:12:18,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:12:18,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:12:18,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:12:18,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:12:18,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:12:18,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:12:18,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:12:18,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:12:18,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:12:18,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:12:18,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:12:18,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:12:18,567 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:12:18,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:12:18,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:12:18,567 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:12:18,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:12:18,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:12:18,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:12:18,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:12:18,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:12:18,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:12:18,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:12:18,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:12:18,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:12:18,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:12:18,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:12:18,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:12:18,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:12:18,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:12:18,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:12:18,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:12:18,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:12:18,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:12:18,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:12:18,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:12:18,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:12:18,571 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:12:18,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:12:18,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:12:18,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:12:18,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216404335c43b82447a03ad9d88ac8bc18e7528b04f40169d87fb26955d8753c [2021-12-21 14:12:18,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:12:18,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:12:18,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:12:18,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:12:18,759 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:12:18,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-2.c [2021-12-21 14:12:18,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820191c8c/94e6745f7d004e6384d67f0ba9295376/FLAG0a0cf0828 [2021-12-21 14:12:19,450 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:12:19,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-2.c [2021-12-21 14:12:19,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820191c8c/94e6745f7d004e6384d67f0ba9295376/FLAG0a0cf0828 [2021-12-21 14:12:19,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820191c8c/94e6745f7d004e6384d67f0ba9295376 [2021-12-21 14:12:19,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:12:19,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:12:19,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:12:19,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:12:19,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:12:19,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:12:19" (1/1) ... [2021-12-21 14:12:19,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@685785e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:19, skipping insertion in model container [2021-12-21 14:12:19,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:12:19" (1/1) ... [2021-12-21 14:12:19,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:12:19,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:12:20,885 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/combinations/Problem05_label42+token_ring.13.cil-2.c[378560,378573] [2021-12-21 14:12:20,905 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/combinations/Problem05_label42+token_ring.13.cil-2.c[383339,383352] [2021-12-21 14:12:21,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:12:21,129 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:12:21,740 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/combinations/Problem05_label42+token_ring.13.cil-2.c[378560,378573] [2021-12-21 14:12:21,746 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/combinations/Problem05_label42+token_ring.13.cil-2.c[383339,383352] [2021-12-21 14:12:21,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:12:21,814 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:12:21,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21 WrapperNode [2021-12-21 14:12:21,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:12:21,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:12:21,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:12:21,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:12:21,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:21,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,185 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-21 14:12:22,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:12:22,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:12:22,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:12:22,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:12:22,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:12:22,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:12:22,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:12:22,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:12:22,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (1/1) ... [2021-12-21 14:12:22,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:12:22,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:12:22,681 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) [2021-12-21 14:12:22,718 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 [2021-12-21 14:12:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:12:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:12:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:12:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:12:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:12:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:12:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:12:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:12:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:12:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:12:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:12:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:12:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:12:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:12:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:12:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:12:22,953 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:12:22,954 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:12:27,560 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:12:27,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:12:27,603 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-21 14:12:27,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:12:27 BoogieIcfgContainer [2021-12-21 14:12:27,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:12:27,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:12:27,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:12:27,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:12:27,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:12:19" (1/3) ... [2021-12-21 14:12:27,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1191cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:12:27, skipping insertion in model container [2021-12-21 14:12:27,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:21" (2/3) ... [2021-12-21 14:12:27,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1191cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:12:27, skipping insertion in model container [2021-12-21 14:12:27,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:12:27" (3/3) ... [2021-12-21 14:12:27,616 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.13.cil-2.c [2021-12-21 14:12:27,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:12:27,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:12:27,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:12:27,667 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 [2021-12-21 14:12:27,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:12:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:12:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:27,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:27,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:27,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:27,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-21 14:12:27,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:27,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365886379] [2021-12-21 14:12:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:27,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:28,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:28,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:28,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365886379] [2021-12-21 14:12:28,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365886379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:28,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:28,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:12:28,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640025783] [2021-12-21 14:12:28,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:28,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:12:28,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:12:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:12:28,132 INFO L87 Difference]: Start difference. First operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:12:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:29,710 INFO L93 Difference]: Finished difference Result 5325 states and 9765 transitions. [2021-12-21 14:12:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:12:29,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:29,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:29,736 INFO L225 Difference]: With dead ends: 5325 [2021-12-21 14:12:29,737 INFO L226 Difference]: Without dead ends: 2676 [2021-12-21 14:12:29,747 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 [2021-12-21 14:12:29,751 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 1107 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 17241 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:29,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 17241 Invalid, 817 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [62 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 14:12:29,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-21 14:12:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-21 14:12:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8243569131832797) internal successors, (4539), 2490 states have internal predecessors, (4539), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:12:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4593 transitions. [2021-12-21 14:12:29,871 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4593 transitions. Word has length 189 [2021-12-21 14:12:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:29,871 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4593 transitions. [2021-12-21 14:12:29,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:12:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4593 transitions. [2021-12-21 14:12:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:29,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:29,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:29,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:12:29,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1444519429, now seen corresponding path program 1 times [2021-12-21 14:12:29,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:29,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906190219] [2021-12-21 14:12:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:29,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:30,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:30,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906190219] [2021-12-21 14:12:30,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906190219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:30,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:30,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:12:30,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024122478] [2021-12-21 14:12:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:30,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:12:30,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:12:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:12:30,069 INFO L87 Difference]: Start difference. First operand 2523 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:12:31,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:31,372 INFO L93 Difference]: Finished difference Result 3061 states and 5463 transitions. [2021-12-21 14:12:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:12:31,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:31,381 INFO L225 Difference]: With dead ends: 3061 [2021-12-21 14:12:31,381 INFO L226 Difference]: Without dead ends: 2676 [2021-12-21 14:12:31,383 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 [2021-12-21 14:12:31,384 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 1093 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 16968 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:31,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 16968 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 14:12:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-21 14:12:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-21 14:12:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8239549839228295) internal successors, (4538), 2490 states have internal predecessors, (4538), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:12:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4592 transitions. [2021-12-21 14:12:31,441 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4592 transitions. Word has length 189 [2021-12-21 14:12:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:31,441 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4592 transitions. [2021-12-21 14:12:31,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:12:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4592 transitions. [2021-12-21 14:12:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:31,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:31,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:31,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:12:31,457 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:31,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1347349561, now seen corresponding path program 1 times [2021-12-21 14:12:31,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:31,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293317645] [2021-12-21 14:12:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:31,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:31,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:31,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293317645] [2021-12-21 14:12:31,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293317645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:31,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:31,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:12:31,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38782094] [2021-12-21 14:12:31,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:31,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:12:31,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:12:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:12:31,592 INFO L87 Difference]: Start difference. First operand 2523 states and 4592 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-21 14:12:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:34,122 INFO L93 Difference]: Finished difference Result 3611 states and 6359 transitions. [2021-12-21 14:12:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:12:34,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:34,132 INFO L225 Difference]: With dead ends: 3611 [2021-12-21 14:12:34,132 INFO L226 Difference]: Without dead ends: 3230 [2021-12-21 14:12:34,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:12:34,134 INFO L933 BasicCegarLoop]: 4715 mSDtfsCounter, 5624 mSDsluCounter, 12944 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5644 SdHoareTripleChecker+Valid, 17659 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:34,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5644 Valid, 17659 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 14:12:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2021-12-21 14:12:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2925. [2021-12-21 14:12:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2861 states have (on average 1.7948269835721775) internal successors, (5135), 2864 states have internal predecessors, (5135), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-21 14:12:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5236 transitions. [2021-12-21 14:12:34,200 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5236 transitions. Word has length 189 [2021-12-21 14:12:34,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:34,201 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 5236 transitions. [2021-12-21 14:12:34,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-21 14:12:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5236 transitions. [2021-12-21 14:12:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:34,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:34,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:34,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:12:34,203 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:34,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:34,204 INFO L85 PathProgramCache]: Analyzing trace with hash 671278923, now seen corresponding path program 1 times [2021-12-21 14:12:34,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:34,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014204590] [2021-12-21 14:12:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:34,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:34,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:34,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:34,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014204590] [2021-12-21 14:12:34,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014204590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:34,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:34,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:34,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846575599] [2021-12-21 14:12:34,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:34,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:34,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:34,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:34,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:34,334 INFO L87 Difference]: Start difference. First operand 2925 states and 5236 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:37,579 INFO L93 Difference]: Finished difference Result 4589 states and 7942 transitions. [2021-12-21 14:12:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:37,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:37,606 INFO L225 Difference]: With dead ends: 4589 [2021-12-21 14:12:37,606 INFO L226 Difference]: Without dead ends: 3806 [2021-12-21 14:12:37,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:12:37,612 INFO L933 BasicCegarLoop]: 5036 mSDtfsCounter, 5662 mSDsluCounter, 17899 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5682 SdHoareTripleChecker+Valid, 22935 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:37,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5682 Valid, 22935 Invalid, 3365 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 14:12:37,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-12-21 14:12:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3298. [2021-12-21 14:12:37,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 3205 states have (on average 1.7703588143525741) internal successors, (5674), 3209 states have internal predecessors, (5674), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-21 14:12:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 5821 transitions. [2021-12-21 14:12:37,740 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 5821 transitions. Word has length 189 [2021-12-21 14:12:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:37,741 INFO L470 AbstractCegarLoop]: Abstraction has 3298 states and 5821 transitions. [2021-12-21 14:12:37,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 5821 transitions. [2021-12-21 14:12:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:37,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:37,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:37,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:12:37,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1053329399, now seen corresponding path program 1 times [2021-12-21 14:12:37,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:37,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901908552] [2021-12-21 14:12:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:37,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:37,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:37,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:37,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:37,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901908552] [2021-12-21 14:12:37,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901908552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:37,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:37,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:37,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638822880] [2021-12-21 14:12:37,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:37,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:37,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:37,953 INFO L87 Difference]: Start difference. First operand 3298 states and 5821 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:41,292 INFO L93 Difference]: Finished difference Result 6030 states and 10255 transitions. [2021-12-21 14:12:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:41,311 INFO L225 Difference]: With dead ends: 6030 [2021-12-21 14:12:41,312 INFO L226 Difference]: Without dead ends: 4874 [2021-12-21 14:12:41,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:12:41,317 INFO L933 BasicCegarLoop]: 5024 mSDtfsCounter, 5656 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5676 SdHoareTripleChecker+Valid, 22919 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:41,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5676 Valid, 22919 Invalid, 3360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 14:12:41,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-12-21 14:12:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4048. [2021-12-21 14:12:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 3897 states have (on average 1.7344110854503465) internal successors, (6759), 3903 states have internal predecessors, (6759), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-21 14:12:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 7002 transitions. [2021-12-21 14:12:41,486 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 7002 transitions. Word has length 189 [2021-12-21 14:12:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:41,486 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 7002 transitions. [2021-12-21 14:12:41,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 7002 transitions. [2021-12-21 14:12:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:41,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:41,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:41,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:12:41,490 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:41,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash -483057593, now seen corresponding path program 1 times [2021-12-21 14:12:41,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:41,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303613188] [2021-12-21 14:12:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:41,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:41,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:41,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303613188] [2021-12-21 14:12:41,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303613188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:41,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:41,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:41,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153988637] [2021-12-21 14:12:41,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:41,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:41,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:41,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:41,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:41,641 INFO L87 Difference]: Start difference. First operand 4048 states and 7002 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:45,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:45,153 INFO L93 Difference]: Finished difference Result 8806 states and 14680 transitions. [2021-12-21 14:12:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:45,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:45,176 INFO L225 Difference]: With dead ends: 8806 [2021-12-21 14:12:45,177 INFO L226 Difference]: Without dead ends: 6900 [2021-12-21 14:12:45,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:12:45,183 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 5655 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 22914 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:45,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5675 Valid, 22914 Invalid, 3352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 14:12:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6900 states. [2021-12-21 14:12:45,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6900 to 5549. [2021-12-21 14:12:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5282 states have (on average 1.690458159787959) internal successors, (8929), 5292 states have internal predecessors, (8929), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-21 14:12:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 9370 transitions. [2021-12-21 14:12:45,386 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 9370 transitions. Word has length 189 [2021-12-21 14:12:45,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:45,387 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 9370 transitions. [2021-12-21 14:12:45,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 9370 transitions. [2021-12-21 14:12:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:45,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:45,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:45,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:12:45,391 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:45,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash 920811593, now seen corresponding path program 1 times [2021-12-21 14:12:45,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:45,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635115111] [2021-12-21 14:12:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:45,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:45,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:45,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:45,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635115111] [2021-12-21 14:12:45,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635115111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:45,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:45,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:45,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868560677] [2021-12-21 14:12:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:45,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:45,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:45,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:45,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:45,531 INFO L87 Difference]: Start difference. First operand 5549 states and 9370 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:48,997 INFO L93 Difference]: Finished difference Result 14357 states and 23546 transitions. [2021-12-21 14:12:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:48,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:49,034 INFO L225 Difference]: With dead ends: 14357 [2021-12-21 14:12:49,034 INFO L226 Difference]: Without dead ends: 10950 [2021-12-21 14:12:49,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:12:49,048 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 5654 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3260 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5674 SdHoareTripleChecker+Valid, 22909 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:49,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5674 Valid, 22909 Invalid, 3344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3260 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 14:12:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2021-12-21 14:12:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 8558. [2021-12-21 14:12:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8059 states have (on average 1.6477230425611118) internal successors, (13279), 8077 states have internal predecessors, (13279), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-21 14:12:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 14134 transitions. [2021-12-21 14:12:49,438 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 14134 transitions. Word has length 189 [2021-12-21 14:12:49,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:49,438 INFO L470 AbstractCegarLoop]: Abstraction has 8558 states and 14134 transitions. [2021-12-21 14:12:49,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 14134 transitions. [2021-12-21 14:12:49,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:49,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:49,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:49,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:12:49,443 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:49,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:49,443 INFO L85 PathProgramCache]: Analyzing trace with hash 134813703, now seen corresponding path program 1 times [2021-12-21 14:12:49,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:49,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924113065] [2021-12-21 14:12:49,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:49,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:49,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:49,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:49,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:49,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924113065] [2021-12-21 14:12:49,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924113065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:49,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:49,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:49,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843100798] [2021-12-21 14:12:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:49,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:49,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:49,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:49,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:49,599 INFO L87 Difference]: Start difference. First operand 8558 states and 14134 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:53,395 INFO L93 Difference]: Finished difference Result 25460 states and 41340 transitions. [2021-12-21 14:12:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:53,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:53,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:53,447 INFO L225 Difference]: With dead ends: 25460 [2021-12-21 14:12:53,447 INFO L226 Difference]: Without dead ends: 19044 [2021-12-21 14:12:53,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:12:53,471 INFO L933 BasicCegarLoop]: 4750 mSDtfsCounter, 5763 mSDsluCounter, 17208 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5783 SdHoareTripleChecker+Valid, 21958 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:53,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5783 Valid, 21958 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 14:12:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19044 states. [2021-12-21 14:12:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19044 to 14591. [2021-12-21 14:12:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 13628 states have (on average 1.6143968300557676) internal successors, (22001), 13662 states have internal predecessors, (22001), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-21 14:12:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 23738 transitions. [2021-12-21 14:12:54,374 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 23738 transitions. Word has length 189 [2021-12-21 14:12:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:54,374 INFO L470 AbstractCegarLoop]: Abstraction has 14591 states and 23738 transitions. [2021-12-21 14:12:54,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 23738 transitions. [2021-12-21 14:12:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:54,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:54,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:54,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:12:54,383 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash 802195593, now seen corresponding path program 1 times [2021-12-21 14:12:54,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:54,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047804673] [2021-12-21 14:12:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:54,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:54,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:54,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:54,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:54,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047804673] [2021-12-21 14:12:54,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047804673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:54,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:54,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:54,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848184174] [2021-12-21 14:12:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:54,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:54,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:54,515 INFO L87 Difference]: Start difference. First operand 14591 states and 23738 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:57,291 INFO L93 Difference]: Finished difference Result 31774 states and 51709 transitions. [2021-12-21 14:12:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:12:57,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:12:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:57,340 INFO L225 Difference]: With dead ends: 31774 [2021-12-21 14:12:57,340 INFO L226 Difference]: Without dead ends: 19325 [2021-12-21 14:12:57,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:12:57,372 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 5161 mSDsluCounter, 16825 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5182 SdHoareTripleChecker+Valid, 21462 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:57,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5182 Valid, 21462 Invalid, 1671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:12:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19325 states. [2021-12-21 14:12:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19325 to 14591. [2021-12-21 14:12:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 13628 states have (on average 1.611975344878192) internal successors, (21968), 13662 states have internal predecessors, (21968), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-21 14:12:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 23705 transitions. [2021-12-21 14:12:58,147 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 23705 transitions. Word has length 189 [2021-12-21 14:12:58,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:58,148 INFO L470 AbstractCegarLoop]: Abstraction has 14591 states and 23705 transitions. [2021-12-21 14:12:58,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:12:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 23705 transitions. [2021-12-21 14:12:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:12:58,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:58,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:58,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:12:58,157 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:58,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1393033273, now seen corresponding path program 1 times [2021-12-21 14:12:58,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:58,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720861497] [2021-12-21 14:12:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:58,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:58,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:58,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:58,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720861497] [2021-12-21 14:12:58,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720861497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:58,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:58,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:58,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793188313] [2021-12-21 14:12:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:58,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:58,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:58,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:58,315 INFO L87 Difference]: Start difference. First operand 14591 states and 23705 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:13:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:03,416 INFO L93 Difference]: Finished difference Result 47633 states and 76890 transitions. [2021-12-21 14:13:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:03,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:13:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:03,559 INFO L225 Difference]: With dead ends: 47633 [2021-12-21 14:13:03,560 INFO L226 Difference]: Without dead ends: 35184 [2021-12-21 14:13:03,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:03,592 INFO L933 BasicCegarLoop]: 4998 mSDtfsCounter, 5645 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3225 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5665 SdHoareTripleChecker+Valid, 22893 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:03,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5665 Valid, 22893 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3225 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 14:13:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35184 states. [2021-12-21 14:13:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35184 to 26721. [2021-12-21 14:13:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26721 states, 24830 states have (on average 1.5892066049134113) internal successors, (39460), 24896 states have internal predecessors, (39460), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2021-12-21 14:13:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26721 states to 26721 states and 43123 transitions. [2021-12-21 14:13:05,365 INFO L78 Accepts]: Start accepts. Automaton has 26721 states and 43123 transitions. Word has length 189 [2021-12-21 14:13:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:05,365 INFO L470 AbstractCegarLoop]: Abstraction has 26721 states and 43123 transitions. [2021-12-21 14:13:05,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:13:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 26721 states and 43123 transitions. [2021-12-21 14:13:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:13:05,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:05,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:05,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:13:05,380 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:05,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1048205111, now seen corresponding path program 1 times [2021-12-21 14:13:05,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:05,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259766009] [2021-12-21 14:13:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:05,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:13:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:13:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:05,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:13:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:05,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:13:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:05,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:05,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259766009] [2021-12-21 14:13:05,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259766009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:05,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:05,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:05,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118601723] [2021-12-21 14:13:05,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:05,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:05,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:05,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:05,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:05,522 INFO L87 Difference]: Start difference. First operand 26721 states and 43123 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:13:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:13,915 INFO L93 Difference]: Finished difference Result 92049 states and 148866 transitions. [2021-12-21 14:13:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:13,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:13:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:14,140 INFO L225 Difference]: With dead ends: 92049 [2021-12-21 14:13:14,140 INFO L226 Difference]: Without dead ends: 67470 [2021-12-21 14:13:14,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:14,205 INFO L933 BasicCegarLoop]: 4991 mSDtfsCounter, 5647 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3214 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 22886 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:14,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5667 Valid, 22886 Invalid, 3301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 3214 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 14:13:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67470 states. [2021-12-21 14:13:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67470 to 51042. [2021-12-21 14:13:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51042 states, 47295 states have (on average 1.575938259858336) internal successors, (74534), 47425 states have internal predecessors, (74534), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2021-12-21 14:13:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51042 states to 51042 states and 82535 transitions. [2021-12-21 14:13:17,947 INFO L78 Accepts]: Start accepts. Automaton has 51042 states and 82535 transitions. Word has length 189 [2021-12-21 14:13:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:17,947 INFO L470 AbstractCegarLoop]: Abstraction has 51042 states and 82535 transitions. [2021-12-21 14:13:17,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:13:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 51042 states and 82535 transitions. [2021-12-21 14:13:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:13:17,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:17,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:17,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:13:17,974 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash -67250297, now seen corresponding path program 1 times [2021-12-21 14:13:17,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:17,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939861735] [2021-12-21 14:13:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:17,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:18,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:13:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:13:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:13:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:13:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:18,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:18,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939861735] [2021-12-21 14:13:18,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939861735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:18,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:18,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:18,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885581199] [2021-12-21 14:13:18,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:18,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:18,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:18,105 INFO L87 Difference]: Start difference. First operand 51042 states and 82535 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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)