./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 454b29c5fe5071d16700d38fede778ad07010669479cf8e19070acab5fe681c9 --- 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-5e519f3 [2022-11-03 03:42:52,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:42:52,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:42:52,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:42:52,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:42:52,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:42:52,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:42:52,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:42:52,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:42:52,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:42:52,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:42:52,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:42:52,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:42:52,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:42:52,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:42:52,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:42:52,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:42:52,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:42:52,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:42:52,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:42:52,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:42:52,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:42:52,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:42:52,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:42:52,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:42:52,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:42:52,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:42:52,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:42:52,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:42:52,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:42:52,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:42:52,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:42:52,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:42:52,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:42:52,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:42:52,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:42:52,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:42:52,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:42:52,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:42:52,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:42:52,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:42:52,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:42:52,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:42:52,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:42:52,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:42:52,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:42:52,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:42:52,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:42:52,716 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:42:52,716 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:42:52,716 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:42:52,716 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:42:52,717 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:42:52,718 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:42:52,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:42:52,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:42:52,718 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:42:52,719 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:42:52,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:42:52,719 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:42:52,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:42:52,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:42:52,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:42:52,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:42:52,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:42:52,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:42:52,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:42:52,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:42:52,723 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:42:52,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:42:52,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:42:52,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:42:52,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:42:52,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:42:52,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:42:52,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:42:52,726 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:42:52,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:42:52,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:42:52,726 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:42:52,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:42:52,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:42:52,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:42:52,727 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_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 454b29c5fe5071d16700d38fede778ad07010669479cf8e19070acab5fe681c9 [2022-11-03 03:42:53,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:42:53,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:42:53,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:42:53,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:42:53,096 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:42:53,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c [2022-11-03 03:42:53,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/data/ec518cb6e/ccfa5656fd7741f9b9e3b9e970ce7cf9/FLAG44ecb4736 [2022-11-03 03:42:54,307 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:42:54,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c [2022-11-03 03:42:54,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/data/ec518cb6e/ccfa5656fd7741f9b9e3b9e970ce7cf9/FLAG44ecb4736 [2022-11-03 03:42:54,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/data/ec518cb6e/ccfa5656fd7741f9b9e3b9e970ce7cf9 [2022-11-03 03:42:54,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:42:54,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:42:54,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:42:54,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:42:54,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:42:54,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:54" (1/1) ... [2022-11-03 03:42:54,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392410b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:54, skipping insertion in model container [2022-11-03 03:42:54,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:54" (1/1) ... [2022-11-03 03:42:54,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:42:54,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:42:57,231 WARN L230 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_cc4ade61-3660-4cde-9569-6e20604711b9/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[380593,380606] [2022-11-03 03:42:57,263 WARN L230 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_cc4ade61-3660-4cde-9569-6e20604711b9/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[383339,383352] [2022-11-03 03:42:57,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:42:57,450 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:42:58,758 WARN L230 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_cc4ade61-3660-4cde-9569-6e20604711b9/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[380593,380606] [2022-11-03 03:42:58,772 WARN L230 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_cc4ade61-3660-4cde-9569-6e20604711b9/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-2.c[383339,383352] [2022-11-03 03:42:58,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:42:58,899 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:42:58,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58 WrapperNode [2022-11-03 03:42:58,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:42:58,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:42:58,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:42:58,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:42:58,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,462 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12624 [2022-11-03 03:42:59,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:42:59,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:42:59,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:42:59,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:42:59,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:59,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:43:00,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:43:00,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:43:00,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:43:00,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:43:00,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:43:00,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:43:00,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:00,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:43:00,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:43:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:43:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-03 03:43:00,162 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-03 03:43:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 03:43:00,162 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 03:43:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 03:43:00,162 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 03:43:00,163 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 03:43:00,163 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 03:43:00,163 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 03:43:00,163 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 03:43:00,163 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 03:43:00,164 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 03:43:00,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:43:00,164 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 03:43:00,164 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 03:43:00,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:43:00,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:43:00,323 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:43:00,340 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:43:09,313 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:43:11,954 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:43:11,954 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-03 03:43:11,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:11 BoogieIcfgContainer [2022-11-03 03:43:11,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:43:11,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:43:11,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:43:11,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:43:11,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:54" (1/3) ... [2022-11-03 03:43:11,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdb1f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:11, skipping insertion in model container [2022-11-03 03:43:11,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58" (2/3) ... [2022-11-03 03:43:11,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdb1f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:11, skipping insertion in model container [2022-11-03 03:43:11,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:11" (3/3) ... [2022-11-03 03:43:11,971 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.02.cil-2.c [2022-11-03 03:43:11,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:43:11,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 03:43:12,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:43:12,105 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=FINITE_AUTOMATA, 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;@4b450433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:43:12,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 03:43:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:43:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:43:12,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:12,135 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] [2022-11-03 03:43:12,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:12,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:12,145 INFO L85 PathProgramCache]: Analyzing trace with hash 659391932, now seen corresponding path program 1 times [2022-11-03 03:43:12,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:12,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621068788] [2022-11-03 03:43:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:12,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:43:12,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:12,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621068788] [2022-11-03 03:43:12,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621068788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:12,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:12,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733967359] [2022-11-03 03:43:12,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:12,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:12,578 INFO L87 Difference]: Start difference. First operand has 1727 states, 1699 states have (on average 1.9770453207769276) internal successors, (3359), 1704 states have internal predecessors, (3359), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:43:13,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:13,596 INFO L93 Difference]: Finished difference Result 3514 states and 6887 transitions. [2022-11-03 03:43:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:43:13,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-11-03 03:43:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:13,627 INFO L225 Difference]: With dead ends: 3514 [2022-11-03 03:43:13,627 INFO L226 Difference]: Without dead ends: 1786 [2022-11-03 03:43:13,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:13,643 INFO L413 NwaCegarLoop]: 3218 mSDtfsCounter, 3457 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:13,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3457 Valid, 6376 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:43:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-11-03 03:43:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1785. [2022-11-03 03:43:13,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1741 states have (on average 1.9563469270534175) internal successors, (3406), 1745 states have internal predecessors, (3406), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-03 03:43:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3464 transitions. [2022-11-03 03:43:13,812 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3464 transitions. Word has length 38 [2022-11-03 03:43:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:13,813 INFO L495 AbstractCegarLoop]: Abstraction has 1785 states and 3464 transitions. [2022-11-03 03:43:13,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:43:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3464 transitions. [2022-11-03 03:43:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:43:13,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:13,825 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:43:13,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:43:13,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1846018642, now seen corresponding path program 1 times [2022-11-03 03:43:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:13,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574985594] [2022-11-03 03:43:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:13,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:43:14,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:14,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574985594] [2022-11-03 03:43:14,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574985594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:14,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802529780] [2022-11-03 03:43:14,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:14,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:14,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:14,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:14,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:43:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:14,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:43:14,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:43:14,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:14,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802529780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:14,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:14,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:43:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766246984] [2022-11-03 03:43:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:14,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:14,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:14,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:14,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:14,359 INFO L87 Difference]: Start difference. First operand 1785 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:43:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:14,845 INFO L93 Difference]: Finished difference Result 2056 states and 3839 transitions. [2022-11-03 03:43:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:14,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-03 03:43:14,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:14,856 INFO L225 Difference]: With dead ends: 2056 [2022-11-03 03:43:14,857 INFO L226 Difference]: Without dead ends: 1917 [2022-11-03 03:43:14,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:14,860 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 3356 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:14,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3356 Valid, 3269 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:43:14,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-11-03 03:43:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1911. [2022-11-03 03:43:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1833 states have (on average 1.9252591380250954) internal successors, (3529), 1838 states have internal predecessors, (3529), 52 states have call successors, (52), 25 states have call predecessors, (52), 24 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 03:43:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3631 transitions. [2022-11-03 03:43:14,974 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3631 transitions. Word has length 67 [2022-11-03 03:43:14,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:14,975 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 3631 transitions. [2022-11-03 03:43:14,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:43:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3631 transitions. [2022-11-03 03:43:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 03:43:14,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:14,982 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:43:15,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:15,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:15,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:15,191 INFO L85 PathProgramCache]: Analyzing trace with hash 895662514, now seen corresponding path program 1 times [2022-11-03 03:43:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014686825] [2022-11-03 03:43:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:15,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 03:43:15,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:15,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014686825] [2022-11-03 03:43:15,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014686825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:15,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:15,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:43:15,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969805021] [2022-11-03 03:43:15,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:15,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:43:15,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:43:15,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:15,611 INFO L87 Difference]: Start difference. First operand 1911 states and 3631 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:43:16,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:16,790 INFO L93 Difference]: Finished difference Result 2467 states and 4380 transitions. [2022-11-03 03:43:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:43:16,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2022-11-03 03:43:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:16,809 INFO L225 Difference]: With dead ends: 2467 [2022-11-03 03:43:16,809 INFO L226 Difference]: Without dead ends: 2203 [2022-11-03 03:43:16,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:43:16,815 INFO L413 NwaCegarLoop]: 3165 mSDtfsCounter, 3530 mSDsluCounter, 6702 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 9419 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:16,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3541 Valid, 9419 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:43:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-11-03 03:43:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2147. [2022-11-03 03:43:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2003 states have (on average 1.872690963554668) internal successors, (3751), 2010 states have internal predecessors, (3751), 94 states have call successors, (94), 49 states have call predecessors, (94), 48 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-03 03:43:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3937 transitions. [2022-11-03 03:43:16,925 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3937 transitions. Word has length 67 [2022-11-03 03:43:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:16,926 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3937 transitions. [2022-11-03 03:43:16,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:43:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3937 transitions. [2022-11-03 03:43:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:43:16,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:16,929 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:43:16,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:43:16,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash -818194889, now seen corresponding path program 1 times [2022-11-03 03:43:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:16,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560295797] [2022-11-03 03:43:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:16,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 03:43:17,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:17,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560295797] [2022-11-03 03:43:17,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560295797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:17,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:17,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:17,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877216855] [2022-11-03 03:43:17,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:17,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:17,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:17,038 INFO L87 Difference]: Start difference. First operand 2147 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:43:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:17,587 INFO L93 Difference]: Finished difference Result 2536 states and 4460 transitions. [2022-11-03 03:43:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:17,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-03 03:43:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:17,602 INFO L225 Difference]: With dead ends: 2536 [2022-11-03 03:43:17,602 INFO L226 Difference]: Without dead ends: 2268 [2022-11-03 03:43:17,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:17,611 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 36 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:17,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 6336 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:43:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2022-11-03 03:43:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2205. [2022-11-03 03:43:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2053 states have (on average 1.864101315148563) internal successors, (3827), 2060 states have internal predecessors, (3827), 98 states have call successors, (98), 53 states have call predecessors, (98), 52 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-03 03:43:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 4021 transitions. [2022-11-03 03:43:17,709 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 4021 transitions. Word has length 68 [2022-11-03 03:43:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:17,710 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 4021 transitions. [2022-11-03 03:43:17,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:43:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 4021 transitions. [2022-11-03 03:43:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 03:43:17,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:17,715 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:43:17,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:43:17,717 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:17,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:17,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1656630577, now seen corresponding path program 1 times [2022-11-03 03:43:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:17,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69906504] [2022-11-03 03:43:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:43:17,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:17,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69906504] [2022-11-03 03:43:17,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69906504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:17,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:17,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:17,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489109937] [2022-11-03 03:43:17,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:17,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:17,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:17,822 INFO L87 Difference]: Start difference. First operand 2205 states and 4021 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:43:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:18,313 INFO L93 Difference]: Finished difference Result 3043 states and 5150 transitions. [2022-11-03 03:43:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:18,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-11-03 03:43:18,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:18,327 INFO L225 Difference]: With dead ends: 3043 [2022-11-03 03:43:18,328 INFO L226 Difference]: Without dead ends: 2484 [2022-11-03 03:43:18,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:18,331 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 3349 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:18,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3349 Valid, 3270 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:43:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-11-03 03:43:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2022-11-03 03:43:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2252 states have (on average 1.813943161634103) internal successors, (4085), 2261 states have internal predecessors, (4085), 142 states have call successors, (142), 79 states have call predecessors, (142), 78 states have return successors, (140), 134 states have call predecessors, (140), 140 states have call successors, (140) [2022-11-03 03:43:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4367 transitions. [2022-11-03 03:43:18,429 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4367 transitions. Word has length 87 [2022-11-03 03:43:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:18,430 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4367 transitions. [2022-11-03 03:43:18,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:43:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4367 transitions. [2022-11-03 03:43:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:43:18,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:18,436 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:18,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:43:18,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:18,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1225706054, now seen corresponding path program 1 times [2022-11-03 03:43:18,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:18,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536032161] [2022-11-03 03:43:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:18,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 03:43:18,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:18,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536032161] [2022-11-03 03:43:18,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536032161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:18,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363123830] [2022-11-03 03:43:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:18,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:18,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:18,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:43:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:18,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:43:18,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:43:18,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:18,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363123830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:18,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:18,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 03:43:18,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468366913] [2022-11-03 03:43:18,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:18,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:18,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:18,742 INFO L87 Difference]: Start difference. First operand 2474 states and 4367 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:43:19,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:19,277 INFO L93 Difference]: Finished difference Result 3213 states and 5363 transitions. [2022-11-03 03:43:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:19,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-11-03 03:43:19,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:19,290 INFO L225 Difference]: With dead ends: 3213 [2022-11-03 03:43:19,291 INFO L226 Difference]: Without dead ends: 2655 [2022-11-03 03:43:19,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:19,296 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 52 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6338 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:19,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6338 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:43:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-11-03 03:43:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2553. [2022-11-03 03:43:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2319 states have (on average 1.8055196205260888) internal successors, (4187), 2328 states have internal predecessors, (4187), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-03 03:43:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4481 transitions. [2022-11-03 03:43:19,411 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4481 transitions. Word has length 99 [2022-11-03 03:43:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:19,411 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4481 transitions. [2022-11-03 03:43:19,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:43:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4481 transitions. [2022-11-03 03:43:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:43:19,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:19,418 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:19,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:19,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:19,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash -264718022, now seen corresponding path program 2 times [2022-11-03 03:43:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:19,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261565138] [2022-11-03 03:43:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:19,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:43:19,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:19,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261565138] [2022-11-03 03:43:19,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261565138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:19,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853399100] [2022-11-03 03:43:19,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:43:19,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:19,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:19,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:43:19,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 03:43:19,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:43:19,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:43:20,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 03:43:20,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:20,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853399100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:20,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:20,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:43:20,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991175472] [2022-11-03 03:43:20,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:20,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:20,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:20,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:20,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:20,038 INFO L87 Difference]: Start difference. First operand 2553 states and 4481 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:43:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:20,632 INFO L93 Difference]: Finished difference Result 3198 states and 5385 transitions. [2022-11-03 03:43:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-03 03:43:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:20,645 INFO L225 Difference]: With dead ends: 3198 [2022-11-03 03:43:20,646 INFO L226 Difference]: Without dead ends: 2561 [2022-11-03 03:43:20,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:20,650 INFO L413 NwaCegarLoop]: 3194 mSDtfsCounter, 92 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:20,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6333 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:43:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-11-03 03:43:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2549. [2022-11-03 03:43:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2315 states have (on average 1.7982721382289417) internal successors, (4163), 2324 states have internal predecessors, (4163), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-03 03:43:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 4457 transitions. [2022-11-03 03:43:20,754 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 4457 transitions. Word has length 99 [2022-11-03 03:43:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:20,755 INFO L495 AbstractCegarLoop]: Abstraction has 2549 states and 4457 transitions. [2022-11-03 03:43:20,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:43:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 4457 transitions. [2022-11-03 03:43:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 03:43:20,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:20,759 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:20,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:20,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:20,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1194076518, now seen corresponding path program 1 times [2022-11-03 03:43:20,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:20,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144434377] [2022-11-03 03:43:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:43:21,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:21,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144434377] [2022-11-03 03:43:21,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144434377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:21,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385255798] [2022-11-03 03:43:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:21,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:21,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:21,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:21,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:43:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:21,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:43:21,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-03 03:43:21,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:21,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385255798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:21,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:21,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:43:21,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795970488] [2022-11-03 03:43:21,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:21,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:21,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:21,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:21,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:21,529 INFO L87 Difference]: Start difference. First operand 2549 states and 4457 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:43:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:22,056 INFO L93 Difference]: Finished difference Result 3331 states and 5474 transitions. [2022-11-03 03:43:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:22,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-03 03:43:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:22,074 INFO L225 Difference]: With dead ends: 3331 [2022-11-03 03:43:22,074 INFO L226 Difference]: Without dead ends: 2725 [2022-11-03 03:43:22,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:22,078 INFO L413 NwaCegarLoop]: 3156 mSDtfsCounter, 3359 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:22,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 3175 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:43:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2022-11-03 03:43:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2725. [2022-11-03 03:43:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2463 states have (on average 1.7576126674786845) internal successors, (4329), 2472 states have internal predecessors, (4329), 156 states have call successors, (156), 105 states have call predecessors, (156), 104 states have return successors, (154), 148 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-03 03:43:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4639 transitions. [2022-11-03 03:43:22,218 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4639 transitions. Word has length 99 [2022-11-03 03:43:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:22,219 INFO L495 AbstractCegarLoop]: Abstraction has 2725 states and 4639 transitions. [2022-11-03 03:43:22,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:43:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4639 transitions. [2022-11-03 03:43:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 03:43:22,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:22,224 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:22,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:22,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:22,438 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:22,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:22,438 INFO L85 PathProgramCache]: Analyzing trace with hash 558149513, now seen corresponding path program 1 times [2022-11-03 03:43:22,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:22,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167090389] [2022-11-03 03:43:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:43:22,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:22,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167090389] [2022-11-03 03:43:22,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167090389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:22,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102238031] [2022-11-03 03:43:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:22,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:22,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:22,647 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:22,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:43:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:22,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:43:22,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:43:22,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:22,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102238031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:22,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:22,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:43:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692398562] [2022-11-03 03:43:22,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:22,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:22,812 INFO L87 Difference]: Start difference. First operand 2725 states and 4639 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:43:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:23,369 INFO L93 Difference]: Finished difference Result 4207 states and 6540 transitions. [2022-11-03 03:43:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:23,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-11-03 03:43:23,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:23,383 INFO L225 Difference]: With dead ends: 4207 [2022-11-03 03:43:23,383 INFO L226 Difference]: Without dead ends: 3129 [2022-11-03 03:43:23,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:23,387 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 48 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6301 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:23,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 6301 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:43:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-11-03 03:43:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2841. [2022-11-03 03:43:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2559 states have (on average 1.7456037514654161) internal successors, (4467), 2569 states have internal predecessors, (4467), 166 states have call successors, (166), 115 states have call predecessors, (166), 114 states have return successors, (164), 157 states have call predecessors, (164), 164 states have call successors, (164) [2022-11-03 03:43:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4797 transitions. [2022-11-03 03:43:23,515 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4797 transitions. Word has length 100 [2022-11-03 03:43:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:23,515 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 4797 transitions. [2022-11-03 03:43:23,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:43:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4797 transitions. [2022-11-03 03:43:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:43:23,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:23,520 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:23,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:23,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 03:43:23,746 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:23,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1184583757, now seen corresponding path program 1 times [2022-11-03 03:43:23,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:23,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245346614] [2022-11-03 03:43:23,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:23,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 03:43:23,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245346614] [2022-11-03 03:43:23,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245346614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:23,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260195655] [2022-11-03 03:43:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:23,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:23,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:23,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:43:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:23,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:43:23,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:43:24,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:24,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260195655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:24,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:24,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-03 03:43:24,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978501688] [2022-11-03 03:43:24,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:24,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:24,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:24,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:24,007 INFO L87 Difference]: Start difference. First operand 2841 states and 4797 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:43:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:24,617 INFO L93 Difference]: Finished difference Result 3881 states and 6149 transitions. [2022-11-03 03:43:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:24,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-03 03:43:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:24,632 INFO L225 Difference]: With dead ends: 3881 [2022-11-03 03:43:24,632 INFO L226 Difference]: Without dead ends: 3260 [2022-11-03 03:43:24,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:24,636 INFO L413 NwaCegarLoop]: 3206 mSDtfsCounter, 56 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:24,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6356 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:43:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-11-03 03:43:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3009. [2022-11-03 03:43:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 2695 states have (on average 1.72430426716141) internal successors, (4647), 2705 states have internal predecessors, (4647), 182 states have call successors, (182), 131 states have call predecessors, (182), 130 states have return successors, (180), 173 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-03 03:43:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 5009 transitions. [2022-11-03 03:43:24,785 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 5009 transitions. Word has length 101 [2022-11-03 03:43:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:24,786 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 5009 transitions. [2022-11-03 03:43:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:43:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 5009 transitions. [2022-11-03 03:43:24,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:43:24,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:24,790 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:24,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:25,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash -646851604, now seen corresponding path program 1 times [2022-11-03 03:43:25,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:25,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041755213] [2022-11-03 03:43:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:25,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:43:25,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:25,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041755213] [2022-11-03 03:43:25,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041755213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977301811] [2022-11-03 03:43:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:25,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:25,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:25,201 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:25,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:43:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:25,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:43:25,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:43:25,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:25,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977301811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:25,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:25,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-11-03 03:43:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869062029] [2022-11-03 03:43:25,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:25,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:43:25,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:25,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:43:25,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:25,440 INFO L87 Difference]: Start difference. First operand 3009 states and 5009 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:43:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:26,474 INFO L93 Difference]: Finished difference Result 4904 states and 7404 transitions. [2022-11-03 03:43:26,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:43:26,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2022-11-03 03:43:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:26,502 INFO L225 Difference]: With dead ends: 4904 [2022-11-03 03:43:26,502 INFO L226 Difference]: Without dead ends: 3542 [2022-11-03 03:43:26,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:43:26,506 INFO L413 NwaCegarLoop]: 3166 mSDtfsCounter, 3498 mSDsluCounter, 6724 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 9432 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:26,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 9432 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:43:26,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2022-11-03 03:43:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3538. [2022-11-03 03:43:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3096 states have (on average 1.6563307493540051) internal successors, (5128), 3109 states have internal predecessors, (5128), 256 states have call successors, (256), 185 states have call predecessors, (256), 184 states have return successors, (254), 244 states have call predecessors, (254), 254 states have call successors, (254) [2022-11-03 03:43:26,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5638 transitions. [2022-11-03 03:43:26,711 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5638 transitions. Word has length 101 [2022-11-03 03:43:26,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:26,711 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5638 transitions. [2022-11-03 03:43:26,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:43:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5638 transitions. [2022-11-03 03:43:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:43:26,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:26,716 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:26,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:26,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:26,942 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1095847597, now seen corresponding path program 1 times [2022-11-03 03:43:26,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:26,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722220251] [2022-11-03 03:43:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:26,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 03:43:27,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722220251] [2022-11-03 03:43:27,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722220251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239348968] [2022-11-03 03:43:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:27,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:27,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:27,492 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:27,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:43:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:27,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:43:27,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:43:27,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:27,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239348968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:27,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:27,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-03 03:43:27,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453768872] [2022-11-03 03:43:27,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:27,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:43:27,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:43:27,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:43:27,857 INFO L87 Difference]: Start difference. First operand 3538 states and 5638 transitions. Second operand has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:43:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:29,023 INFO L93 Difference]: Finished difference Result 4977 states and 7487 transitions. [2022-11-03 03:43:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:43:29,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-03 03:43:29,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:29,036 INFO L225 Difference]: With dead ends: 4977 [2022-11-03 03:43:29,036 INFO L226 Difference]: Without dead ends: 3659 [2022-11-03 03:43:29,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:43:29,042 INFO L413 NwaCegarLoop]: 3134 mSDtfsCounter, 3386 mSDsluCounter, 9952 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 12420 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:29,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 12420 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:43:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2022-11-03 03:43:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3623. [2022-11-03 03:43:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3171 states have (on average 1.6367076631977293) internal successors, (5190), 3184 states have internal predecessors, (5190), 258 states have call successors, (258), 193 states have call predecessors, (258), 192 states have return successors, (256), 246 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-03 03:43:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5704 transitions. [2022-11-03 03:43:29,282 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5704 transitions. Word has length 102 [2022-11-03 03:43:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:29,283 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 5704 transitions. [2022-11-03 03:43:29,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:43:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5704 transitions. [2022-11-03 03:43:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:43:29,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:29,289 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:29,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:29,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:29,517 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:29,517 INFO L85 PathProgramCache]: Analyzing trace with hash 950528051, now seen corresponding path program 1 times [2022-11-03 03:43:29,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:29,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370498168] [2022-11-03 03:43:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:29,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 03:43:29,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:29,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370498168] [2022-11-03 03:43:29,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370498168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:29,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249866348] [2022-11-03 03:43:29,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:29,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:29,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:29,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:29,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:43:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:29,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:43:29,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 03:43:29,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:29,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249866348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:29,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:29,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-03 03:43:29,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985822325] [2022-11-03 03:43:29,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:29,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:29,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:29,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:29,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:29,792 INFO L87 Difference]: Start difference. First operand 3623 states and 5704 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:43:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:30,443 INFO L93 Difference]: Finished difference Result 5011 states and 7486 transitions. [2022-11-03 03:43:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2022-11-03 03:43:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:30,467 INFO L225 Difference]: With dead ends: 5011 [2022-11-03 03:43:30,467 INFO L226 Difference]: Without dead ends: 3633 [2022-11-03 03:43:30,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:30,473 INFO L413 NwaCegarLoop]: 3223 mSDtfsCounter, 79 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6361 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:30,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 6361 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:43:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-11-03 03:43:30,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3603. [2022-11-03 03:43:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 3151 states have (on average 1.6217073944779434) internal successors, (5110), 3164 states have internal predecessors, (5110), 258 states have call successors, (258), 193 states have call predecessors, (258), 192 states have return successors, (256), 246 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-03 03:43:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 5624 transitions. [2022-11-03 03:43:30,881 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 5624 transitions. Word has length 102 [2022-11-03 03:43:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:30,881 INFO L495 AbstractCegarLoop]: Abstraction has 3603 states and 5624 transitions. [2022-11-03 03:43:30,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:43:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 5624 transitions. [2022-11-03 03:43:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 03:43:30,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:30,888 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:30,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:31,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 03:43:31,114 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:31,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:31,115 INFO L85 PathProgramCache]: Analyzing trace with hash 707436644, now seen corresponding path program 1 times [2022-11-03 03:43:31,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:31,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252405574] [2022-11-03 03:43:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 03:43:31,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:31,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252405574] [2022-11-03 03:43:31,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252405574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776664252] [2022-11-03 03:43:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:31,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:31,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:31,305 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:31,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 03:43:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:31,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:43:31,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:43:31,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:31,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776664252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:31,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:31,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-11-03 03:43:31,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809403740] [2022-11-03 03:43:31,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:31,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:31,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:31,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:31,574 INFO L87 Difference]: Start difference. First operand 3603 states and 5624 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:43:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:32,422 INFO L93 Difference]: Finished difference Result 5257 states and 7636 transitions. [2022-11-03 03:43:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:43:32,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 103 [2022-11-03 03:43:32,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:32,439 INFO L225 Difference]: With dead ends: 5257 [2022-11-03 03:43:32,440 INFO L226 Difference]: Without dead ends: 4239 [2022-11-03 03:43:32,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:32,446 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 3395 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:32,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 3303 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:43:32,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2022-11-03 03:43:32,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3827. [2022-11-03 03:43:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3356 states have (on average 1.58015494636472) internal successors, (5303), 3369 states have internal predecessors, (5303), 258 states have call successors, (258), 212 states have call predecessors, (258), 211 states have return successors, (268), 246 states have call predecessors, (268), 256 states have call successors, (268) [2022-11-03 03:43:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5829 transitions. [2022-11-03 03:43:32,784 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5829 transitions. Word has length 103 [2022-11-03 03:43:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:32,785 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5829 transitions. [2022-11-03 03:43:32,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:43:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5829 transitions. [2022-11-03 03:43:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:43:32,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:32,793 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:32,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:33,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:33,018 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:33,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1912037950, now seen corresponding path program 1 times [2022-11-03 03:43:33,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:33,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169639500] [2022-11-03 03:43:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:33,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:43:33,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:33,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169639500] [2022-11-03 03:43:33,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169639500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:33,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:33,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:43:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982738427] [2022-11-03 03:43:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:33,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:43:33,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:43:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:43:33,268 INFO L87 Difference]: Start difference. First operand 3827 states and 5829 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:43:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:34,563 INFO L93 Difference]: Finished difference Result 5705 states and 8066 transitions. [2022-11-03 03:43:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:43:34,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-11-03 03:43:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:34,580 INFO L225 Difference]: With dead ends: 5705 [2022-11-03 03:43:34,580 INFO L226 Difference]: Without dead ends: 4576 [2022-11-03 03:43:34,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:34,586 INFO L413 NwaCegarLoop]: 3195 mSDtfsCounter, 76 mSDsluCounter, 10074 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 12582 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:34,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 12582 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:43:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-11-03 03:43:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4477. [2022-11-03 03:43:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 3833 states have (on average 1.5246543177667624) internal successors, (5844), 3846 states have internal predecessors, (5844), 358 states have call successors, (358), 291 states have call predecessors, (358), 284 states have return successors, (386), 340 states have call predecessors, (386), 356 states have call successors, (386) [2022-11-03 03:43:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 6588 transitions. [2022-11-03 03:43:35,060 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 6588 transitions. Word has length 104 [2022-11-03 03:43:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:35,060 INFO L495 AbstractCegarLoop]: Abstraction has 4477 states and 6588 transitions. [2022-11-03 03:43:35,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:43:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 6588 transitions. [2022-11-03 03:43:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:43:35,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:35,067 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:35,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:43:35,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:35,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash -743842205, now seen corresponding path program 1 times [2022-11-03 03:43:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:35,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89635782] [2022-11-03 03:43:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 03:43:35,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:35,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89635782] [2022-11-03 03:43:35,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89635782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:35,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150228152] [2022-11-03 03:43:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:35,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:35,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:35,318 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:35,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 03:43:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:35,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 03:43:35,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:43:35,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:35,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150228152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:35,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:43:35,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-11-03 03:43:35,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723837201] [2022-11-03 03:43:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:35,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:43:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:43:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:35,521 INFO L87 Difference]: Start difference. First operand 4477 states and 6588 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 03:43:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:36,800 INFO L93 Difference]: Finished difference Result 6777 states and 9277 transitions. [2022-11-03 03:43:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:43:36,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 104 [2022-11-03 03:43:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:36,814 INFO L225 Difference]: With dead ends: 6777 [2022-11-03 03:43:36,814 INFO L226 Difference]: Without dead ends: 4825 [2022-11-03 03:43:36,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:43:36,820 INFO L413 NwaCegarLoop]: 3196 mSDtfsCounter, 180 mSDsluCounter, 13340 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 15640 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:36,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 15640 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:43:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2022-11-03 03:43:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4662. [2022-11-03 03:43:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4662 states, 3973 states have (on average 1.506670022652907) internal successors, (5986), 3990 states have internal predecessors, (5986), 380 states have call successors, (380), 310 states have call predecessors, (380), 307 states have return successors, (418), 362 states have call predecessors, (418), 378 states have call successors, (418) [2022-11-03 03:43:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4662 states to 4662 states and 6784 transitions. [2022-11-03 03:43:37,308 INFO L78 Accepts]: Start accepts. Automaton has 4662 states and 6784 transitions. Word has length 104 [2022-11-03 03:43:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:37,309 INFO L495 AbstractCegarLoop]: Abstraction has 4662 states and 6784 transitions. [2022-11-03 03:43:37,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-03 03:43:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4662 states and 6784 transitions. [2022-11-03 03:43:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 03:43:37,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:37,313 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:43:37,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:37,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 03:43:37,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:37,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1808767847, now seen corresponding path program 1 times [2022-11-03 03:43:37,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:37,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852455457] [2022-11-03 03:43:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:43:38,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:38,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852455457] [2022-11-03 03:43:38,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852455457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:38,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372449260] [2022-11-03 03:43:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:38,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:38,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:38,109 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:38,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 03:43:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:38,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 03:43:38,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:43:38,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-03 03:43:38,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372449260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:38,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798205485] [2022-11-03 03:43:38,700 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-03 03:43:38,700 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:43:38,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:43:38,710 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:43:38,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:43:45,433 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-03 03:43:50,376 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-03 03:43:51,114 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-03 03:43:51,165 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 67 for LOIs [2022-11-03 03:43:51,174 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-03 03:43:51,340 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-03 03:43:51,577 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:44:12,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [798205485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:12,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:44:12,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [13, 8, 6] total 64 [2022-11-03 03:44:12,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153050423] [2022-11-03 03:44:12,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:12,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-03 03:44:12,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-03 03:44:12,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=3582, Unknown=0, NotChecked=0, Total=4032 [2022-11-03 03:44:12,194 INFO L87 Difference]: Start difference. First operand 4662 states and 6784 transitions. Second operand has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 03:45:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:02,618 INFO L93 Difference]: Finished difference Result 7242 states and 9783 transitions. [2022-11-03 03:45:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-03 03:45:02,619 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 110 [2022-11-03 03:45:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:02,630 INFO L225 Difference]: With dead ends: 7242 [2022-11-03 03:45:02,630 INFO L226 Difference]: Without dead ends: 4544 [2022-11-03 03:45:02,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3704 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=1204, Invalid=9926, Unknown=0, NotChecked=0, Total=11130 [2022-11-03 03:45:02,639 INFO L413 NwaCegarLoop]: 3157 mSDtfsCounter, 286 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 21442 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 21579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 21442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:02,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 3928 Invalid, 21579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 21442 Invalid, 0 Unknown, 0 Unchecked, 30.5s Time] [2022-11-03 03:45:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2022-11-03 03:45:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4516. [2022-11-03 03:45:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3862 states have (on average 1.5145002589331953) internal successors, (5849), 3878 states have internal predecessors, (5849), 359 states have call successors, (359), 295 states have call predecessors, (359), 293 states have return successors, (395), 343 states have call predecessors, (395), 357 states have call successors, (395) [2022-11-03 03:45:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6603 transitions. [2022-11-03 03:45:03,027 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6603 transitions. Word has length 110 [2022-11-03 03:45:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:03,028 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 6603 transitions. [2022-11-03 03:45:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 32 states have internal predecessors, (46), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 03:45:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6603 transitions. [2022-11-03 03:45:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:45:03,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:03,033 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:45:03,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:03,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 03:45:03,262 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:03,263 INFO L85 PathProgramCache]: Analyzing trace with hash 294550743, now seen corresponding path program 1 times [2022-11-03 03:45:03,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:03,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837139752] [2022-11-03 03:45:03,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:03,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:45:03,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:03,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837139752] [2022-11-03 03:45:03,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837139752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:45:03,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376833305] [2022-11-03 03:45:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:03,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:03,549 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:03,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 03:45:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:03,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:45:03,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:45:03,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-03 03:45:04,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376833305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:45:04,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1177895452] [2022-11-03 03:45:04,164 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 03:45:04,165 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:45:04,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:45:04,165 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:45:04,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:45:09,612 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 72 for LOIs [2022-11-03 03:45:09,618 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-03 03:45:17,493 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-03 03:45:20,853 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-03 03:45:20,902 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 115 for LOIs [2022-11-03 03:45:20,923 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 121 for LOIs [2022-11-03 03:45:21,111 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-03 03:45:21,294 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:45:28,567 WARN L234 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 307 DAG size of output: 235 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:38,353 WARN L234 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 389 DAG size of output: 258 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:45:52,763 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '158636#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-03 03:45:52,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:45:52,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:45:52,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2022-11-03 03:45:52,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712324515] [2022-11-03 03:45:52,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:45:52,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:45:52,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:45:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3799, Unknown=0, NotChecked=0, Total=4290 [2022-11-03 03:45:52,766 INFO L87 Difference]: Start difference. First operand 4516 states and 6603 transitions. Second operand has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 03:45:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:56,623 INFO L93 Difference]: Finished difference Result 7170 states and 9780 transitions. [2022-11-03 03:45:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-03 03:45:56,623 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 113 [2022-11-03 03:45:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:56,636 INFO L225 Difference]: With dead ends: 7170 [2022-11-03 03:45:56,637 INFO L226 Difference]: Without dead ends: 4298 [2022-11-03 03:45:56,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 315 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9673 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=1755, Invalid=20895, Unknown=0, NotChecked=0, Total=22650 [2022-11-03 03:45:56,651 INFO L413 NwaCegarLoop]: 3309 mSDtfsCounter, 10429 mSDsluCounter, 21927 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10434 SdHoareTripleChecker+Valid, 23659 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:56,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10434 Valid, 23659 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 03:45:56,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2022-11-03 03:45:56,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 3758. [2022-11-03 03:45:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3281 states have (on average 1.56903383114904) internal successors, (5148), 3301 states have internal predecessors, (5148), 251 states have call successors, (251), 220 states have call predecessors, (251), 224 states have return successors, (277), 237 states have call predecessors, (277), 249 states have call successors, (277) [2022-11-03 03:45:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5676 transitions. [2022-11-03 03:45:57,011 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5676 transitions. Word has length 113 [2022-11-03 03:45:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:57,012 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5676 transitions. [2022-11-03 03:45:57,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.357142857142858) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 03:45:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5676 transitions. [2022-11-03 03:45:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:45:57,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:57,016 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:45:57,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:57,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 03:45:57,242 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 377313506, now seen corresponding path program 1 times [2022-11-03 03:45:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:57,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469719392] [2022-11-03 03:45:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:45:57,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:57,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469719392] [2022-11-03 03:45:57,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469719392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:45:57,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691904151] [2022-11-03 03:45:57,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:57,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:57,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:57,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:57,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 03:45:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:57,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 03:45:57,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:45:58,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-03 03:45:58,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691904151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:45:58,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1334644326] [2022-11-03 03:45:58,403 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 03:45:58,407 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:45:58,407 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:45:58,407 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:45:58,408 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:46:03,483 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 167 for LOIs [2022-11-03 03:46:07,480 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-03 03:46:11,407 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-03 03:46:11,459 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 68 for LOIs [2022-11-03 03:46:11,467 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-03 03:46:11,563 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 115 for LOIs [2022-11-03 03:46:11,773 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:46:21,374 WARN L234 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 342 DAG size of output: 270 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:46:39,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1334644326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:39,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:46:39,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [13, 8, 6] total 65 [2022-11-03 03:46:39,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932485837] [2022-11-03 03:46:39,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:39,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-03 03:46:39,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-03 03:46:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=3702, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 03:46:39,081 INFO L87 Difference]: Start difference. First operand 3758 states and 5676 transitions. Second operand has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 03:47:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:12,112 INFO L93 Difference]: Finished difference Result 5482 states and 7655 transitions. [2022-11-03 03:47:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-03 03:47:12,113 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) Word has length 113 [2022-11-03 03:47:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:12,121 INFO L225 Difference]: With dead ends: 5482 [2022-11-03 03:47:12,121 INFO L226 Difference]: Without dead ends: 3579 [2022-11-03 03:47:12,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3855 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=1203, Invalid=10139, Unknown=0, NotChecked=0, Total=11342 [2022-11-03 03:47:12,129 INFO L413 NwaCegarLoop]: 3157 mSDtfsCounter, 330 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 8941 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 9105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 8941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:12,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 3834 Invalid, 9105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 8941 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 03:47:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2022-11-03 03:47:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3527. [2022-11-03 03:47:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3109 states have (on average 1.594724991958829) internal successors, (4958), 3127 states have internal predecessors, (4958), 218 states have call successors, (218), 193 states have call predecessors, (218), 198 states have return successors, (242), 207 states have call predecessors, (242), 216 states have call successors, (242) [2022-11-03 03:47:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5418 transitions. [2022-11-03 03:47:12,448 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5418 transitions. Word has length 113 [2022-11-03 03:47:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:12,449 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5418 transitions. [2022-11-03 03:47:12,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 33 states have internal predecessors, (50), 12 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 03:47:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5418 transitions. [2022-11-03 03:47:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:47:12,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:12,452 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:47:12,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:12,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:12,678 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -87925300, now seen corresponding path program 1 times [2022-11-03 03:47:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501045760] [2022-11-03 03:47:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:47:13,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:13,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501045760] [2022-11-03 03:47:13,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501045760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:13,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487100675] [2022-11-03 03:47:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:13,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:13,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:13,448 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:13,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 03:47:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:13,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 03:47:13,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:47:14,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 03:47:15,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487100675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:15,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1387500760] [2022-11-03 03:47:15,141 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-03 03:47:15,141 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:15,142 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:15,142 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:15,142 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:20,827 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 63 for LOIs [2022-11-03 03:47:20,832 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 170 for LOIs [2022-11-03 03:47:24,948 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 200 for LOIs [2022-11-03 03:47:27,035 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 176 for LOIs [2022-11-03 03:47:27,081 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 56 for LOIs [2022-11-03 03:47:27,089 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 76 for LOIs [2022-11-03 03:47:27,172 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 56 for LOIs [2022-11-03 03:47:27,522 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:48:01,946 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '185712#(and (= ~a15~0 1) (= 5 ~a20~0) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (= ~a27~0 1) (<= 0 |#StackHeapBarrier|) (= ~a2~0 10) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-11-03 03:48:01,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:48:01,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:48:01,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 14] total 37 [2022-11-03 03:48:01,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806820123] [2022-11-03 03:48:01,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:48:01,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-03 03:48:01,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-03 03:48:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=7676, Unknown=0, NotChecked=0, Total=8372 [2022-11-03 03:48:01,951 INFO L87 Difference]: Start difference. First operand 3527 states and 5418 transitions. Second operand has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) [2022-11-03 03:48:13,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:13,185 INFO L93 Difference]: Finished difference Result 7917 states and 10527 transitions. [2022-11-03 03:48:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-03 03:48:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) Word has length 116 [2022-11-03 03:48:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:13,205 INFO L225 Difference]: With dead ends: 7917 [2022-11-03 03:48:13,205 INFO L226 Difference]: Without dead ends: 6794 [2022-11-03 03:48:13,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 284 SyntacticMatches, 17 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14629 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=3805, Invalid=30977, Unknown=0, NotChecked=0, Total=34782 [2022-11-03 03:48:13,214 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 21944 mSDsluCounter, 37497 mSDsCounter, 0 mSdLazyCounter, 7181 mSolverCounterSat, 1702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21950 SdHoareTripleChecker+Valid, 38117 SdHoareTripleChecker+Invalid, 8883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1702 IncrementalHoareTripleChecker+Valid, 7181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:13,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21950 Valid, 38117 Invalid, 8883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1702 Valid, 7181 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 03:48:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-11-03 03:48:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 3841. [2022-11-03 03:48:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 3338 states have (on average 1.5566207309766327) internal successors, (5196), 3366 states have internal predecessors, (5196), 263 states have call successors, (263), 229 states have call predecessors, (263), 238 states have return successors, (281), 246 states have call predecessors, (281), 261 states have call successors, (281) [2022-11-03 03:48:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5740 transitions. [2022-11-03 03:48:13,783 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5740 transitions. Word has length 116 [2022-11-03 03:48:13,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:13,786 INFO L495 AbstractCegarLoop]: Abstraction has 3841 states and 5740 transitions. [2022-11-03 03:48:13,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 25 states have (on average 7.72) internal successors, (193), 29 states have internal predecessors, (193), 16 states have call successors, (44), 11 states have call predecessors, (44), 19 states have return successors, (44), 16 states have call predecessors, (44), 16 states have call successors, (44) [2022-11-03 03:48:13,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5740 transitions. [2022-11-03 03:48:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 03:48:13,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:13,791 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:13,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:14,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:14,015 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:14,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:14,016 INFO L85 PathProgramCache]: Analyzing trace with hash -907155449, now seen corresponding path program 1 times [2022-11-03 03:48:14,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:14,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036591525] [2022-11-03 03:48:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:14,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:48:14,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:14,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036591525] [2022-11-03 03:48:14,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036591525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:14,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:14,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:48:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256837276] [2022-11-03 03:48:14,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:14,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:48:14,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:48:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:14,228 INFO L87 Difference]: Start difference. First operand 3841 states and 5740 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:48:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:15,736 INFO L93 Difference]: Finished difference Result 7345 states and 9735 transitions. [2022-11-03 03:48:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:48:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 128 [2022-11-03 03:48:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:15,755 INFO L225 Difference]: With dead ends: 7345 [2022-11-03 03:48:15,755 INFO L226 Difference]: Without dead ends: 6105 [2022-11-03 03:48:15,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:15,761 INFO L413 NwaCegarLoop]: 3285 mSDtfsCounter, 3501 mSDsluCounter, 6942 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 9727 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:15,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3501 Valid, 9727 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:48:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2022-11-03 03:48:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 4798. [2022-11-03 03:48:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4067 states have (on average 1.484140644209491) internal successors, (6036), 4104 states have internal predecessors, (6036), 384 states have call successors, (384), 330 states have call predecessors, (384), 345 states have return successors, (408), 364 states have call predecessors, (408), 382 states have call successors, (408) [2022-11-03 03:48:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6828 transitions. [2022-11-03 03:48:16,407 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6828 transitions. Word has length 128 [2022-11-03 03:48:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:16,408 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6828 transitions. [2022-11-03 03:48:16,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:48:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6828 transitions. [2022-11-03 03:48:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:48:16,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:16,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:16,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 03:48:16,413 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:16,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:16,414 INFO L85 PathProgramCache]: Analyzing trace with hash -845008067, now seen corresponding path program 1 times [2022-11-03 03:48:16,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:16,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212052233] [2022-11-03 03:48:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:16,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:48:16,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:48:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:48:16,555 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:48:16,555 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:48:16,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-03 03:48:16,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-03 03:48:16,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 03:48:16,563 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:16,569 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:48:16,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:48:16 BoogieIcfgContainer [2022-11-03 03:48:16,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:48:16,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:48:16,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:48:16,732 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:48:16,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:11" (3/4) ... [2022-11-03 03:48:16,735 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 03:48:16,901 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:48:16,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:48:16,907 INFO L158 Benchmark]: Toolchain (without parser) took 322349.47ms. Allocated memory was 117.4MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 78.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-03 03:48:16,908 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:48:16,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4344.64ms. Allocated memory was 117.4MB in the beginning and 241.2MB in the end (delta: 123.7MB). Free memory was 78.7MB in the beginning and 147.2MB in the end (delta: -68.5MB). Peak memory consumption was 125.4MB. Max. memory is 16.1GB. [2022-11-03 03:48:16,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 563.10ms. Allocated memory is still 241.2MB. Free memory was 147.2MB in the beginning and 105.3MB in the end (delta: 41.9MB). Peak memory consumption was 102.9MB. Max. memory is 16.1GB. [2022-11-03 03:48:16,909 INFO L158 Benchmark]: Boogie Preprocessor took 590.33ms. Allocated memory is still 241.2MB. Free memory was 105.3MB in the beginning and 68.6MB in the end (delta: 36.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-03 03:48:16,912 INFO L158 Benchmark]: RCFGBuilder took 11905.22ms. Allocated memory was 241.2MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 68.6MB in the beginning and 1.0GB in the end (delta: -979.1MB). Peak memory consumption was 549.5MB. Max. memory is 16.1GB. [2022-11-03 03:48:16,913 INFO L158 Benchmark]: TraceAbstraction took 304768.36ms. Allocated memory was 1.6GB in the beginning and 3.1GB in the end (delta: 1.5GB). Free memory was 1.0GB in the beginning and 1.4GB in the end (delta: -346.6MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-03 03:48:16,913 INFO L158 Benchmark]: Witness Printer took 170.09ms. Allocated memory is still 3.1GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 03:48:16,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4344.64ms. Allocated memory was 117.4MB in the beginning and 241.2MB in the end (delta: 123.7MB). Free memory was 78.7MB in the beginning and 147.2MB in the end (delta: -68.5MB). Peak memory consumption was 125.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 563.10ms. Allocated memory is still 241.2MB. Free memory was 147.2MB in the beginning and 105.3MB in the end (delta: 41.9MB). Peak memory consumption was 102.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 590.33ms. Allocated memory is still 241.2MB. Free memory was 105.3MB in the beginning and 68.6MB in the end (delta: 36.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * RCFGBuilder took 11905.22ms. Allocated memory was 241.2MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 68.6MB in the beginning and 1.0GB in the end (delta: -979.1MB). Peak memory consumption was 549.5MB. Max. memory is 16.1GB. * TraceAbstraction took 304768.36ms. Allocated memory was 1.6GB in the beginning and 3.1GB in the end (delta: 1.5GB). Free memory was 1.0GB in the beginning and 1.4GB in the end (delta: -346.6MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 170.09ms. Allocated memory is still 3.1GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int m_st ; [L11181] int t1_st ; [L11182] int t2_st ; [L11183] int m_i ; [L11184] int t1_i ; [L11185] int t2_i ; [L11186] int M_E = 2; [L11187] int T1_E = 2; [L11188] int T2_E = 2; [L11189] int E_M = 2; [L11190] int E_1 = 2; [L11191] int E_2 = 2; [L11196] int token ; [L11198] int local ; [L11776] COND FALSE !(__VERIFIER_nondet_int()) [L11779] CALL main2() [L11763] int __retres1 ; [L11767] CALL init_model() [L11677] m_i = 1 [L11678] t1_i = 1 [L11679] t2_i = 1 [L11767] RET init_model() [L11768] CALL start_simulation() [L11704] int kernel_st ; [L11705] int tmp ; [L11706] int tmp___0 ; [L11710] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11711] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11712] CALL init_threads() [L11396] COND TRUE m_i == 1 [L11397] m_st = 0 [L11401] COND TRUE t1_i == 1 [L11402] t1_st = 0 [L11406] COND TRUE t2_i == 1 [L11407] t2_st = 0 [L11712] RET init_threads() [L11713] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11509] COND FALSE !(M_E == 0) [L11514] COND FALSE !(T1_E == 0) [L11519] COND FALSE !(T2_E == 0) [L11524] COND FALSE !(E_M == 0) [L11529] COND FALSE !(E_1 == 0) [L11534] COND FALSE !(E_2 == 0) [L11713] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11714] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11350] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11360] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11369] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11714] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11715] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11547] COND FALSE !(M_E == 1) [L11552] COND FALSE !(T1_E == 1) [L11557] COND FALSE !(T2_E == 1) [L11562] COND FALSE !(E_M == 1) [L11567] COND FALSE !(E_1 == 1) [L11572] COND FALSE !(E_2 == 1) [L11715] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11718] COND TRUE 1 [L11721] kernel_st = 1 [L11722] CALL eval() [L11442] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] COND TRUE t2_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, token=0] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, tmp_ndt_3=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11214] COND TRUE 1 [L11217] token = __VERIFIER_nondet_int() [L11218] local = token [L11219] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11220] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11620] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11341] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11351] COND TRUE E_1 == 1 [L11352] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND TRUE \read(tmp___0) [L11599] t1_st = 0 [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11379] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11220] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11221] E_1 = 2 [L11222] m_pc = 1 [L11223] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=0, token=0] [L11462] RET master() [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE \read(tmp_ndt_2) [L11475] t1_st = 1 [L11476] CALL transmit1() [L11259] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=0] [L11262] COND TRUE t1_pc == 1 [L11278] token += 1 [L11279] E_2 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11280] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11332] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11341] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11370] COND TRUE E_2 == 1 [L11371] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=1] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND TRUE \read(tmp___1) [L11607] t2_st = 0 [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11280] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=1, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11281] E_2 = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, token=1] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET transmit1() [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE \read(tmp_ndt_3) [L11489] t2_st = 1 [L11490] CALL transmit2() [L11295] COND FALSE !(t2_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=1] [L11298] COND TRUE t2_pc == 1 [L11314] token += 1 [L11315] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11316] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11620] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11331] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11332] COND TRUE E_M == 1 [L11333] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND TRUE \read(tmp) [L11591] m_st = 0 [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11350] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11351] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11360] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11369] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11370] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11379] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11316] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11317] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, token=2] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET transmit2() [L11446] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11449] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, tmp_ndt_3=1, token=2] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11206] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11228] COND FALSE !(token != local + 2) [L11233] COND TRUE tmp_var <= 5 [L11234] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11239] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11240] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11241] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, tmp_var=5, token=2] [L11242] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_2=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, token=2] - UnprovableResult [Line: 11094]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1727 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 304.5s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 113.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64511 SdHoareTripleChecker+Valid, 61.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64439 mSDsluCounter, 196176 SdHoareTripleChecker+Invalid, 54.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138653 mSDsCounter, 2616 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50811 IncrementalHoareTripleChecker+Invalid, 53427 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2616 mSolverCounterUnsat, 67068 mSDtfsCounter, 50811 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2949 GetRequests, 2295 SyntacticMatches, 25 SemanticMatches, 629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31945 ImplicationChecksByTransitivity, 159.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4798occurred in iteration=21, InterpolantAutomatonStates: 414, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 21 MinimizatonAttempts, 6413 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 3681 NumberOfCodeBlocks, 3642 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 3962 ConstructedInterpolants, 0 QuantifiedInterpolants, 8318 SizeOfPredicates, 24 NumberOfNonLiveVariables, 7246 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 40 InterpolantComputations, 17 PerfectInterpolantSequences, 2132/2425 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 26.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 14, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 176, DAG_INTERPRETER_EARLY_EXITS: 11, TOOLS_POST_APPLICATIONS: 197, TOOLS_POST_TIME: 17.0s, TOOLS_POST_CALL_APPLICATIONS: 126, TOOLS_POST_CALL_TIME: 3.7s, TOOLS_POST_RETURN_APPLICATIONS: 100, TOOLS_POST_RETURN_TIME: 2.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 413, TOOLS_QUANTIFIERELIM_TIME: 22.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 4.9s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 497, FLUID_YES_ANSWERS: 1, DOMAIN_JOIN_APPLICATIONS: 143, DOMAIN_JOIN_TIME: 2.9s, DOMAIN_ALPHA_APPLICATIONS: 1, DOMAIN_ALPHA_TIME: 0.1s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 8, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 176, DOMAIN_ISBOTTOM_TIME: 0.3s, LOOP_SUMMARIZER_APPLICATIONS: 8, LOOP_SUMMARIZER_CACHE_MISSES: 8, LOOP_SUMMARIZER_OVERALL_TIME: 3.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 3.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 8, CALL_SUMMARIZER_APPLICATIONS: 100, CALL_SUMMARIZER_CACHE_MISSES: 12, CALL_SUMMARIZER_OVERALL_TIME: 0.4s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 7082, DAG_COMPRESSION_RETAINED_NODES: 489, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 03:48:17,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc4ade61-3660-4cde-9569-6e20604711b9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE