./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN --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 713a95fba13367522eddac239136ad149ef56d491623153a32513b25fa3198dd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:45:47,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:45:47,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:45:47,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:45:47,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:45:47,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:45:47,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:45:47,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:45:47,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:45:47,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:45:47,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:45:47,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:45:47,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:45:47,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:45:47,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:45:47,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:45:47,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:45:47,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:45:47,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:45:47,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:45:47,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:45:47,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:45:47,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:45:47,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:45:47,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:45:47,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:45:47,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:45:47,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:45:47,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:45:47,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:45:47,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:45:47,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:45:47,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:45:47,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:45:47,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:45:47,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:45:47,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:45:47,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:45:47,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:45:47,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:45:47,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:45:47,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:45:47,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:45:47,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:45:47,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:45:47,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:45:47,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:45:47,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:45:47,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:45:47,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:45:47,715 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:45:47,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:45:47,716 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:45:47,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:45:47,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:45:47,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:45:47,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:45:47,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:45:47,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:45:47,718 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:45:47,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:45:47,720 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:45:47,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:45:47,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:45:47,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:45:47,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:45:47,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:45:47,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:45:47,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:45:47,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:45:47,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:45:47,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:45:47,728 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:45:47,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:45:47,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:45:47,730 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 713a95fba13367522eddac239136ad149ef56d491623153a32513b25fa3198dd [2022-11-20 10:45:47,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:45:48,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:45:48,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:45:48,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:45:48,029 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:45:48,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c [2022-11-20 10:45:51,245 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:45:51,956 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:45:51,956 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c [2022-11-20 10:45:52,017 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/data/10dcfe93d/7cac9726566746419923690ea4a129f7/FLAGae9e6bcc3 [2022-11-20 10:45:52,036 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/data/10dcfe93d/7cac9726566746419923690ea4a129f7 [2022-11-20 10:45:52,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:45:52,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:45:52,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:45:52,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:45:52,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:45:52,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:45:52" (1/1) ... [2022-11-20 10:45:52,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebd7db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:52, skipping insertion in model container [2022-11-20 10:45:52,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:45:52" (1/1) ... [2022-11-20 10:45:52,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:45:52,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:45:54,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[380593,380606] [2022-11-20 10:45:54,601 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[383339,383352] [2022-11-20 10:45:54,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:45:54,855 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:45:56,097 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[380593,380606] [2022-11-20 10:45:56,104 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[383339,383352] [2022-11-20 10:45:56,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:45:56,206 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:45:56,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56 WrapperNode [2022-11-20 10:45:56,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:45:56,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:45:56,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:45:56,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:45:56,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:56,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:56,691 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-11-20 10:45:56,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:45:56,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:45:56,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:45:56,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:45:56,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:56,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:56,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:56,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:57,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:57,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:57,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:57,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:57,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:45:57,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:45:57,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:45:57,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:45:57,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (1/1) ... [2022-11-20 10:45:57,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:45:57,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:57,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:45:57,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:45:57,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:45:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 10:45:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 10:45:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 10:45:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 10:45:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 10:45:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 10:45:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 10:45:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 10:45:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 10:45:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 10:45:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 10:45:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 10:45:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:45:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:45:57,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:45:57,576 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:45:57,597 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:46:06,843 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:46:06,877 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:46:06,877 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-20 10:46:06,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:46:06 BoogieIcfgContainer [2022-11-20 10:46:06,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:46:06,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:46:06,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:46:06,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:46:06,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:45:52" (1/3) ... [2022-11-20 10:46:06,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238d222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:46:06, skipping insertion in model container [2022-11-20 10:46:06,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:56" (2/3) ... [2022-11-20 10:46:06,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238d222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:46:06, skipping insertion in model container [2022-11-20 10:46:06,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:46:06" (3/3) ... [2022-11-20 10:46:06,909 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.03.cil-2.c [2022-11-20 10:46:06,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:46:06,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:46:07,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:46:07,041 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7dc40532, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:46:07,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:46:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-20 10:46:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:46:07,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:07,067 INFO L195 NwaCegarLoop]: 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] [2022-11-20 10:46:07,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-11-20 10:46:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:07,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921932024] [2022-11-20 10:46:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:07,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:07,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:07,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921932024] [2022-11-20 10:46:07,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921932024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:07,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:07,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:46:07,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108024060] [2022-11-20 10:46:07,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:07,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:46:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:07,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:46:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:46:07,746 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-20 10:46:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:09,281 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-11-20 10:46:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:46:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-11-20 10:46:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:09,311 INFO L225 Difference]: With dead ends: 4899 [2022-11-20 10:46:09,311 INFO L226 Difference]: Without dead ends: 2500 [2022-11-20 10:46:09,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:46:09,323 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 4551 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 16647 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:09,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 16647 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:46:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-11-20 10:46:09,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-11-20 10:46:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-11-20 10:46:09,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-11-20 10:46:09,502 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-11-20 10:46:09,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:09,503 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-11-20 10:46:09,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-20 10:46:09,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-11-20 10:46:09,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:46:09,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:09,519 INFO L195 NwaCegarLoop]: 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] [2022-11-20 10:46:09,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:46:09,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:09,522 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-11-20 10:46:09,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:09,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376470519] [2022-11-20 10:46:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:09,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:09,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:09,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376470519] [2022-11-20 10:46:09,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376470519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:09,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:09,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:46:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067471278] [2022-11-20 10:46:09,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:09,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:46:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:46:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:46:09,835 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:11,544 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-11-20 10:46:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:46:11,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-20 10:46:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:11,555 INFO L225 Difference]: With dead ends: 2969 [2022-11-20 10:46:11,556 INFO L226 Difference]: Without dead ends: 2686 [2022-11-20 10:46:11,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:46:11,558 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4481 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4491 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:11,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4491 Valid, 20741 Invalid, 1269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 10:46:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-11-20 10:46:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-11-20 10:46:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-11-20 10:46:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-11-20 10:46:11,705 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-11-20 10:46:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:11,705 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-11-20 10:46:11,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-11-20 10:46:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:46:11,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:11,708 INFO L195 NwaCegarLoop]: 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] [2022-11-20 10:46:11,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:46:11,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:11,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:11,709 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-11-20 10:46:11,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:11,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908940861] [2022-11-20 10:46:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:11,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:11,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:11,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:11,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908940861] [2022-11-20 10:46:11,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908940861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:11,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:11,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:46:11,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90168607] [2022-11-20 10:46:11,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:11,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:46:11,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:11,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:46:11,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:46:11,900 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:13,490 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-11-20 10:46:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:46:13,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-20 10:46:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:13,507 INFO L225 Difference]: With dead ends: 3451 [2022-11-20 10:46:13,507 INFO L226 Difference]: Without dead ends: 3035 [2022-11-20 10:46:13,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:46:13,515 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4479 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:13,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 20739 Invalid, 1267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:46:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-11-20 10:46:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-11-20 10:46:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-11-20 10:46:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-11-20 10:46:13,652 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-11-20 10:46:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:13,654 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-11-20 10:46:13,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:13,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-11-20 10:46:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:46:13,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:13,660 INFO L195 NwaCegarLoop]: 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] [2022-11-20 10:46:13,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:46:13,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-11-20 10:46:13,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:13,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926211590] [2022-11-20 10:46:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:13,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:13,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926211590] [2022-11-20 10:46:13,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926211590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:13,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:13,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:46:13,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054758682] [2022-11-20 10:46:13,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:13,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:46:13,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:13,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:46:13,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:46:13,871 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:15,597 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-11-20 10:46:15,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:46:15,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-20 10:46:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:15,617 INFO L225 Difference]: With dead ends: 4382 [2022-11-20 10:46:15,618 INFO L226 Difference]: Without dead ends: 3699 [2022-11-20 10:46:15,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:46:15,628 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4475 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:15,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4485 Valid, 20739 Invalid, 1258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:46:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-11-20 10:46:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-11-20 10:46:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-11-20 10:46:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-11-20 10:46:15,833 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-11-20 10:46:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:15,834 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-11-20 10:46:15,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-11-20 10:46:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:46:15,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:15,839 INFO L195 NwaCegarLoop]: 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] [2022-11-20 10:46:15,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:46:15,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-11-20 10:46:15,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:15,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238274045] [2022-11-20 10:46:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:15,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:15,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:16,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:16,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238274045] [2022-11-20 10:46:16,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238274045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:16,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:16,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:46:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516159454] [2022-11-20 10:46:16,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:16,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:46:16,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:16,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:46:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:46:16,041 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:17,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:17,878 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-11-20 10:46:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:46:17,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-20 10:46:17,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:17,904 INFO L225 Difference]: With dead ends: 6651 [2022-11-20 10:46:17,904 INFO L226 Difference]: Without dead ends: 5433 [2022-11-20 10:46:17,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:46:17,914 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4606 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:17,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4620 Valid, 20729 Invalid, 1247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:46:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-11-20 10:46:18,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-11-20 10:46:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-11-20 10:46:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-11-20 10:46:18,292 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-11-20 10:46:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:18,292 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-11-20 10:46:18,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-11-20 10:46:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:46:18,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:18,296 INFO L195 NwaCegarLoop]: 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] [2022-11-20 10:46:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:46:18,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:18,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-11-20 10:46:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:18,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112802488] [2022-11-20 10:46:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:18,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:18,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112802488] [2022-11-20 10:46:18,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112802488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:18,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:18,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:46:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208146870] [2022-11-20 10:46:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:46:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:46:18,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:46:18,444 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:20,322 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-11-20 10:46:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:46:20,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-20 10:46:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:20,393 INFO L225 Difference]: With dead ends: 10516 [2022-11-20 10:46:20,394 INFO L226 Difference]: Without dead ends: 8247 [2022-11-20 10:46:20,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:46:20,409 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 4495 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 20725 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:20,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 20725 Invalid, 1417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:46:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-11-20 10:46:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-11-20 10:46:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-11-20 10:46:20,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-11-20 10:46:20,916 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-11-20 10:46:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:20,917 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-11-20 10:46:20,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-11-20 10:46:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:46:20,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:20,924 INFO L195 NwaCegarLoop]: 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] [2022-11-20 10:46:20,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:46:20,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:20,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-11-20 10:46:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:20,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536006499] [2022-11-20 10:46:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:21,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:21,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536006499] [2022-11-20 10:46:21,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536006499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:21,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:21,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:46:21,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204675] [2022-11-20 10:46:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:21,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:46:21,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:46:21,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:46:21,087 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:23,221 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-11-20 10:46:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:46:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-20 10:46:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:23,276 INFO L225 Difference]: With dead ends: 17230 [2022-11-20 10:46:23,277 INFO L226 Difference]: Without dead ends: 12950 [2022-11-20 10:46:23,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:46:23,294 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4484 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:23,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 20729 Invalid, 1204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:46:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-11-20 10:46:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-11-20 10:46:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-11-20 10:46:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-11-20 10:46:24,269 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-11-20 10:46:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:24,271 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-11-20 10:46:24,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-20 10:46:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-11-20 10:46:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:46:24,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:24,284 INFO L195 NwaCegarLoop]: 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] [2022-11-20 10:46:24,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:46:24,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:24,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-11-20 10:46:24,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:24,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054081480] [2022-11-20 10:46:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:24,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:24,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:24,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:24,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054081480] [2022-11-20 10:46:24,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054081480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:24,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:24,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:46:24,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815742229] [2022-11-20 10:46:24,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:24,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:46:24,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:24,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:46:24,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:46:24,423 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-20 10:46:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:26,892 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-11-20 10:46:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:46:26,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-11-20 10:46:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:26,960 INFO L225 Difference]: With dead ends: 25979 [2022-11-20 10:46:26,960 INFO L226 Difference]: Without dead ends: 17584 [2022-11-20 10:46:26,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:46:26,991 INFO L413 NwaCegarLoop]: 4214 mSDtfsCounter, 4648 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:26,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 16542 Invalid, 1080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:46:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-11-20 10:46:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-11-20 10:46:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-11-20 10:46:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-11-20 10:46:28,225 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-11-20 10:46:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:28,227 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-11-20 10:46:28,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-20 10:46:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-11-20 10:46:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:46:28,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:28,264 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:28,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:46:28,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:28,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-11-20 10:46:28,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:28,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831821688] [2022-11-20 10:46:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:28,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:46:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:46:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:46:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:46:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:28,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831821688] [2022-11-20 10:46:28,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831821688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:28,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2214351] [2022-11-20 10:46:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:28,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:28,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:28,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:28,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:46:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:28,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 10:46:28,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:46:28,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2214351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:28,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:46:28,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 10:46:28,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143846747] [2022-11-20 10:46:28,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:28,700 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:46:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:30,432 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-11-20 10:46:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:30,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-11-20 10:46:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:30,546 INFO L225 Difference]: With dead ends: 39550 [2022-11-20 10:46:30,547 INFO L226 Difference]: Without dead ends: 26962 [2022-11-20 10:46:30,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:30,593 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:30,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:46:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-11-20 10:46:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-11-20 10:46:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-11-20 10:46:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-11-20 10:46:32,856 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-11-20 10:46:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:32,857 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-11-20 10:46:32,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:46:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-11-20 10:46:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:46:32,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:32,914 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:32,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:33,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-11-20 10:46:33,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:33,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602659914] [2022-11-20 10:46:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:33,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:46:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:46:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:46:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:46:33,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:33,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602659914] [2022-11-20 10:46:33,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602659914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:33,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773476216] [2022-11-20 10:46:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:33,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:33,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:33,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:33,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:46:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:33,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:46:33,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:46:33,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773476216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:33,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:46:33,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 10:46:33,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483007388] [2022-11-20 10:46:33,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:33,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:33,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:33,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:33,543 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:46:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:36,996 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-11-20 10:46:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-11-20 10:46:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:37,266 INFO L225 Difference]: With dead ends: 75333 [2022-11-20 10:46:37,266 INFO L226 Difference]: Without dead ends: 50702 [2022-11-20 10:46:37,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:37,350 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:37,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:46:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-11-20 10:46:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-11-20 10:46:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-11-20 10:46:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-11-20 10:46:40,752 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-11-20 10:46:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:40,753 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-11-20 10:46:40,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:46:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-11-20 10:46:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:46:40,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:40,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:40,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:46:41,035 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-11-20 10:46:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:41,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503538795] [2022-11-20 10:46:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:46:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:46:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:46:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:46:41,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:41,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503538795] [2022-11-20 10:46:41,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503538795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:41,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336999269] [2022-11-20 10:46:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:41,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:41,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:41,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:46:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:41,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:41,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 10:46:41,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:46:41,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336999269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:41,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:46:41,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-20 10:46:41,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705849120] [2022-11-20 10:46:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:41,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:41,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:41,408 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:46:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:47,548 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-11-20 10:46:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:47,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-11-20 10:46:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:48,055 INFO L225 Difference]: With dead ends: 144685 [2022-11-20 10:46:48,055 INFO L226 Difference]: Without dead ends: 96511 [2022-11-20 10:46:48,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:48,168 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:48,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:46:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-11-20 10:46:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-11-20 10:46:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-11-20 10:46:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2022-11-20 10:46:55,495 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2022-11-20 10:46:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:55,496 INFO L495 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2022-11-20 10:46:55,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:46:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2022-11-20 10:46:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 10:46:56,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:56,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:56,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 10:46:56,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:46:56,547 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:46:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:56,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2022-11-20 10:46:56,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:56,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382778054] [2022-11-20 10:46:56,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:56,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:46:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:46:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 10:46:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:46:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:46:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:46:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:46:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 10:46:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:46:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 10:46:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 10:46:56,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382778054] [2022-11-20 10:46:56,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382778054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418411353] [2022-11-20 10:46:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:56,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:56,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:56,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:56,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb6f1829-3a53-498f-b808-3562b455a687/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:46:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:56,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:56,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 10:46:57,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:46:57,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418411353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:57,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:46:57,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 10:46:57,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079965439] [2022-11-20 10:46:57,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:57,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:57,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:57,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:57,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:46:57,136 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)