./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_5-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_5-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0 --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 c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 --- 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-e04fb08 [2022-11-16 19:54:26,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:54:26,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:54:26,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:54:26,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:54:26,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:54:26,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:54:26,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:54:26,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:54:26,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:54:26,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:54:26,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:54:26,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:54:26,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:54:26,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:54:26,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:54:26,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:54:26,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:54:26,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:54:26,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:54:26,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:54:26,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:54:26,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:54:26,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:54:26,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:54:26,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:54:26,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:54:26,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:54:26,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:54:26,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:54:26,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:54:26,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:54:26,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:54:26,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:54:26,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:54:26,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:54:26,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:54:26,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:54:26,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:54:26,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:54:26,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:54:26,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:54:26,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:54:26,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:54:26,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:54:26,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:54:26,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:54:26,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:54:26,622 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:54:26,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:54:26,622 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:54:26,623 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:54:26,623 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:54:26,623 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:54:26,623 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:54:26,624 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:54:26,624 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:54:26,624 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:54:26,624 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:54:26,624 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:54:26,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:54:26,625 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:54:26,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:54:26,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:54:26,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:54:26,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:54:26,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:54:26,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:54:26,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:54:26,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:54:26,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:54:26,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:54:26,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:54:26,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:54:26,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:54:26,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:54:26,629 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:54:26,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:54:26,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:54:26,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:54:26,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:54:26,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:54:26,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:54:26,630 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_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 [2022-11-16 19:54:26,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:54:26,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:54:26,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:54:26,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:54:26,922 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:54:26,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2022-11-16 19:54:27,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/data/34bca9dc9/834aa6c83bc940c3b20605427a34af44/FLAG34b577142 [2022-11-16 19:54:27,569 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:54:27,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2022-11-16 19:54:27,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/data/34bca9dc9/834aa6c83bc940c3b20605427a34af44/FLAG34b577142 [2022-11-16 19:54:27,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/data/34bca9dc9/834aa6c83bc940c3b20605427a34af44 [2022-11-16 19:54:27,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:54:27,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:54:27,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:54:27,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:54:27,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:54:27,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:54:27" (1/1) ... [2022-11-16 19:54:27,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d27305e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:27, skipping insertion in model container [2022-11-16 19:54:27,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:54:27" (1/1) ... [2022-11-16 19:54:27,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:54:27,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:54:28,087 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 19:54:28,631 WARN L229 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_b69a6073-dd8c-45b9-906d-fed8c7e57818/sv-benchmarks/c/ldv-races/race-2_5-container_of.i[75002,75015] [2022-11-16 19:54:28,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:54:28,692 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:54:28,715 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 19:54:28,754 WARN L229 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_b69a6073-dd8c-45b9-906d-fed8c7e57818/sv-benchmarks/c/ldv-races/race-2_5-container_of.i[75002,75015] [2022-11-16 19:54:28,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:54:28,879 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:54:28,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28 WrapperNode [2022-11-16 19:54:28,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:54:28,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:54:28,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:54:28,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:54:28,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,939 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 143 [2022-11-16 19:54:28,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:54:28,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:54:28,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:54:28,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:54:28,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:28,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:29,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:54:29,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:54:29,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:54:29,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:54:29,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (1/1) ... [2022-11-16 19:54:29,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:54:29,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:54:29,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:54:29,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:54:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 19:54:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:54:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 19:54:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:54:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 19:54:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:54:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:54:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:54:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:54:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-16 19:54:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-16 19:54:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:54:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:54:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:54:29,098 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 19:54:29,482 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:54:29,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:54:29,749 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:54:29,820 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:54:29,820 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 19:54:29,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:54:29 BoogieIcfgContainer [2022-11-16 19:54:29,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:54:29,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:54:29,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:54:29,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:54:29,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:54:27" (1/3) ... [2022-11-16 19:54:29,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7d686b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:54:29, skipping insertion in model container [2022-11-16 19:54:29,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:54:28" (2/3) ... [2022-11-16 19:54:29,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7d686b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:54:29, skipping insertion in model container [2022-11-16 19:54:29,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:54:29" (3/3) ... [2022-11-16 19:54:29,832 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2022-11-16 19:54:29,846 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 19:54:29,862 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:54:29,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 19:54:29,862 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 19:54:29,923 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 19:54:29,959 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:54:29,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 175 transitions, 366 flow [2022-11-16 19:54:29,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 175 transitions, 366 flow [2022-11-16 19:54:29,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 175 transitions, 366 flow [2022-11-16 19:54:30,068 INFO L130 PetriNetUnfolder]: 8/220 cut-off events. [2022-11-16 19:54:30,069 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 19:54:30,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 220 events. 8/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 374 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-11-16 19:54:30,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 3380 [2022-11-16 19:55:27,200 INFO L134 LiptonReduction]: Checked pairs total: 8258 [2022-11-16 19:55:27,200 INFO L136 LiptonReduction]: Total number of compositions: 181 [2022-11-16 19:55:27,208 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 41 transitions, 98 flow [2022-11-16 19:55:27,264 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 439 states, 429 states have (on average 2.554778554778555) internal successors, (1096), 438 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:27,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:55:27,289 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;@591601bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:55:27,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 19:55:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 439 states, 429 states have (on average 2.554778554778555) internal successors, (1096), 438 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:55:27,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:27,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:55:27,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 19:55:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash 20426768, now seen corresponding path program 1 times [2022-11-16 19:55:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:27,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586942663] [2022-11-16 19:55:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:27,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:28,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:28,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586942663] [2022-11-16 19:55:28,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586942663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:28,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:28,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:55:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047287647] [2022-11-16 19:55:28,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:28,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:55:28,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:28,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:55:28,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:28,058 INFO L87 Difference]: Start difference. First operand has 439 states, 429 states have (on average 2.554778554778555) internal successors, (1096), 438 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:28,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:28,290 INFO L93 Difference]: Finished difference Result 594 states and 1466 transitions. [2022-11-16 19:55:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:55:28,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 19:55:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:28,311 INFO L225 Difference]: With dead ends: 594 [2022-11-16 19:55:28,311 INFO L226 Difference]: Without dead ends: 557 [2022-11-16 19:55:28,312 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 [2022-11-16 19:55:28,315 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:28,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:55:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-16 19:55:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 461. [2022-11-16 19:55:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 454 states have (on average 2.460352422907489) internal successors, (1117), 460 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1117 transitions. [2022-11-16 19:55:28,421 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1117 transitions. Word has length 4 [2022-11-16 19:55:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:28,421 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 1117 transitions. [2022-11-16 19:55:28,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1117 transitions. [2022-11-16 19:55:28,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:55:28,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:28,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 19:55:28,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:55:28,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 19:55:28,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1844714071, now seen corresponding path program 1 times [2022-11-16 19:55:28,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:28,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309469568] [2022-11-16 19:55:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:28,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:28,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:28,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309469568] [2022-11-16 19:55:28,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309469568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:28,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:28,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:55:28,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213661995] [2022-11-16 19:55:28,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:28,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:55:28,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:28,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:55:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:55:28,819 INFO L87 Difference]: Start difference. First operand 461 states and 1117 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:29,070 INFO L93 Difference]: Finished difference Result 616 states and 1460 transitions. [2022-11-16 19:55:29,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:55:29,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 19:55:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:29,074 INFO L225 Difference]: With dead ends: 616 [2022-11-16 19:55:29,075 INFO L226 Difference]: Without dead ends: 531 [2022-11-16 19:55:29,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:55:29,076 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:29,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 10 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:55:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-11-16 19:55:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 499. [2022-11-16 19:55:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 493 states have (on average 2.4868154158215012) internal successors, (1226), 498 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1226 transitions. [2022-11-16 19:55:29,119 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1226 transitions. Word has length 6 [2022-11-16 19:55:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:29,119 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 1226 transitions. [2022-11-16 19:55:29,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1226 transitions. [2022-11-16 19:55:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:55:29,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:29,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:55:29,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:55:29,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 19:55:29,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash -372334152, now seen corresponding path program 1 times [2022-11-16 19:55:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:29,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579832898] [2022-11-16 19:55:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:29,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:29,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579832898] [2022-11-16 19:55:29,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579832898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:29,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:29,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:55:29,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465763770] [2022-11-16 19:55:29,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:29,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:55:29,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:55:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:29,220 INFO L87 Difference]: Start difference. First operand 499 states and 1226 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:29,300 INFO L93 Difference]: Finished difference Result 179 states and 378 transitions. [2022-11-16 19:55:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:55:29,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 19:55:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:29,302 INFO L225 Difference]: With dead ends: 179 [2022-11-16 19:55:29,302 INFO L226 Difference]: Without dead ends: 179 [2022-11-16 19:55:29,302 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 [2022-11-16 19:55:29,303 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:29,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:55:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-16 19:55:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-16 19:55:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 175 states have (on average 2.16) internal successors, (378), 178 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 378 transitions. [2022-11-16 19:55:29,310 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 378 transitions. Word has length 10 [2022-11-16 19:55:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:29,314 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 378 transitions. [2022-11-16 19:55:29,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 378 transitions. [2022-11-16 19:55:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 19:55:29,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:29,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:55:29,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:55:29,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 19:55:29,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:29,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2117393365, now seen corresponding path program 1 times [2022-11-16 19:55:29,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:29,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193641227] [2022-11-16 19:55:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:29,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:29,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:29,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193641227] [2022-11-16 19:55:29,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193641227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:29,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:29,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:55:29,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769566527] [2022-11-16 19:55:29,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:29,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:55:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:55:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:29,700 INFO L87 Difference]: Start difference. First operand 179 states and 378 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:29,803 INFO L93 Difference]: Finished difference Result 202 states and 415 transitions. [2022-11-16 19:55:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:55:29,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 19:55:29,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:29,805 INFO L225 Difference]: With dead ends: 202 [2022-11-16 19:55:29,805 INFO L226 Difference]: Without dead ends: 202 [2022-11-16 19:55:29,806 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 [2022-11-16 19:55:29,807 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:29,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:55:29,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-16 19:55:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2022-11-16 19:55:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 181 states have (on average 2.143646408839779) internal successors, (388), 184 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 388 transitions. [2022-11-16 19:55:29,813 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 388 transitions. Word has length 16 [2022-11-16 19:55:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:29,813 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 388 transitions. [2022-11-16 19:55:29,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 388 transitions. [2022-11-16 19:55:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:55:29,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:29,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:55:29,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:55:29,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 19:55:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1214684452, now seen corresponding path program 1 times [2022-11-16 19:55:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:29,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225783004] [2022-11-16 19:55:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:29,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:30,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225783004] [2022-11-16 19:55:30,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225783004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:30,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:30,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:55:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575316154] [2022-11-16 19:55:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:30,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:55:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:30,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:55:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:30,071 INFO L87 Difference]: Start difference. First operand 185 states and 388 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:30,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:30,168 INFO L93 Difference]: Finished difference Result 204 states and 418 transitions. [2022-11-16 19:55:30,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:55:30,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 19:55:30,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:30,170 INFO L225 Difference]: With dead ends: 204 [2022-11-16 19:55:30,170 INFO L226 Difference]: Without dead ends: 204 [2022-11-16 19:55:30,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:30,171 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:30,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:55:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-16 19:55:30,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 191. [2022-11-16 19:55:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 2.1497326203208558) internal successors, (402), 190 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 402 transitions. [2022-11-16 19:55:30,178 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 402 transitions. Word has length 17 [2022-11-16 19:55:30,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:30,179 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 402 transitions. [2022-11-16 19:55:30,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:30,179 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 402 transitions. [2022-11-16 19:55:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:55:30,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:30,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:55:30,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:55:30,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 19:55:30,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1720777110, now seen corresponding path program 1 times [2022-11-16 19:55:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:30,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726791374] [2022-11-16 19:55:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:31,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:31,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726791374] [2022-11-16 19:55:31,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726791374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:31,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:31,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:55:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213941148] [2022-11-16 19:55:31,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:31,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:55:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:31,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:55:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:55:31,064 INFO L87 Difference]: Start difference. First operand 191 states and 402 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:31,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:31,266 INFO L93 Difference]: Finished difference Result 215 states and 442 transitions. [2022-11-16 19:55:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:55:31,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:55:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:31,268 INFO L225 Difference]: With dead ends: 215 [2022-11-16 19:55:31,268 INFO L226 Difference]: Without dead ends: 215 [2022-11-16 19:55:31,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:55:31,269 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 73 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:31,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 11 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:55:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-16 19:55:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 203. [2022-11-16 19:55:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 2.120603015075377) internal successors, (422), 202 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 422 transitions. [2022-11-16 19:55:31,277 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 422 transitions. Word has length 18 [2022-11-16 19:55:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:31,277 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 422 transitions. [2022-11-16 19:55:31,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 422 transitions. [2022-11-16 19:55:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:55:31,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:31,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:55:31,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:55:31,279 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 19:55:31,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1512358136, now seen corresponding path program 2 times [2022-11-16 19:55:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:31,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929616726] [2022-11-16 19:55:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:55:31,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:55:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:55:31,443 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:55:31,443 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:55:31,444 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-11-16 19:55:31,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-11-16 19:55:31,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-11-16 19:55:31,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-11-16 19:55:31,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-11-16 19:55:31,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-11-16 19:55:31,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-16 19:55:31,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-16 19:55:31,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 19:55:31,450 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-16 19:55:31,455 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 19:55:31,455 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:55:31,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:55:31 BasicIcfg [2022-11-16 19:55:31,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:55:31,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:55:31,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:55:31,520 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:55:31,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:54:29" (3/4) ... [2022-11-16 19:55:31,522 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 19:55:31,593 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 19:55:31,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:55:31,594 INFO L158 Benchmark]: Toolchain (without parser) took 63763.27ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 100.9MB in the beginning and 113.7MB in the end (delta: -12.8MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2022-11-16 19:55:31,595 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 70.0MB in the beginning and 70.0MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:55:31,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1043.96ms. Allocated memory is still 140.5MB. Free memory was 100.6MB in the beginning and 73.4MB in the end (delta: 27.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-16 19:55:31,595 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.06ms. Allocated memory is still 140.5MB. Free memory was 73.4MB in the beginning and 69.8MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 19:55:31,596 INFO L158 Benchmark]: Boogie Preprocessor took 67.63ms. Allocated memory is still 140.5MB. Free memory was 69.8MB in the beginning and 67.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:55:31,596 INFO L158 Benchmark]: RCFGBuilder took 814.88ms. Allocated memory is still 140.5MB. Free memory was 67.1MB in the beginning and 98.5MB in the end (delta: -31.3MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2022-11-16 19:55:31,596 INFO L158 Benchmark]: TraceAbstraction took 61694.13ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 98.0MB in the beginning and 122.1MB in the end (delta: -24.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2022-11-16 19:55:31,597 INFO L158 Benchmark]: Witness Printer took 74.35ms. Allocated memory is still 174.1MB. Free memory was 122.1MB in the beginning and 113.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 19:55:31,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 70.0MB in the beginning and 70.0MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1043.96ms. Allocated memory is still 140.5MB. Free memory was 100.6MB in the beginning and 73.4MB in the end (delta: 27.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.06ms. Allocated memory is still 140.5MB. Free memory was 73.4MB in the beginning and 69.8MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.63ms. Allocated memory is still 140.5MB. Free memory was 69.8MB in the beginning and 67.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 814.88ms. Allocated memory is still 140.5MB. Free memory was 67.1MB in the beginning and 98.5MB in the end (delta: -31.3MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 61694.13ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 98.0MB in the beginning and 122.1MB in the end (delta: -24.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Witness Printer took 74.35ms. Allocated memory is still 174.1MB. Free memory was 122.1MB in the beginning and 113.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 57.2s, 175 PlacesBefore, 44 PlacesAfterwards, 175 TransitionsBefore, 41 TransitionsAfterwards, 3380 CoEnabledTransitionPairs, 8 FixpointIterations, 87 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 23 ConcurrentYvCompositions, 3 ChoiceCompositions, 181 TotalNumberOfCompositions, 8258 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4130, independent: 3789, independent conditional: 0, independent unconditional: 3789, dependent: 208, dependent conditional: 0, dependent unconditional: 208, unknown: 133, unknown conditional: 0, unknown unconditional: 133] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2451, independent: 2379, independent conditional: 0, independent unconditional: 2379, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 21, unknown conditional: 0, unknown unconditional: 21] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2451, independent: 2373, independent conditional: 0, independent unconditional: 2373, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 78, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 21, unknown conditional: 0, unknown unconditional: 21] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45114, independent: 72, independent conditional: 0, independent unconditional: 72, dependent: 654, dependent conditional: 0, dependent unconditional: 654, unknown: 44388, unknown conditional: 0, unknown unconditional: 44388] ], Cache Queries: [ total: 4130, independent: 1410, independent conditional: 0, independent unconditional: 1410, dependent: 157, dependent conditional: 0, dependent unconditional: 157, unknown: 2563, unknown conditional: 0, unknown unconditional: 2563] , Statistics on independence cache: Total cache size (in pairs): 148, Positive cache size: 125, Positive conditional cache size: 0, Positive unconditional cache size: 125, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 15, Unknown conditional cache size: 0, Unknown unconditional cache size: 15 - 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: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=7, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1694] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1697] EXPR 1 data->shared.b [L1697] 1 int lb = data->shared.b; [L1700] 1 data->shared.b = lb + 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=8, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1722] 0 \read(t1) VAL [\read(t1)=7, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1703] 1 return 0; [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=7, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t1, &status)={0:0}, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1724] 0 data->shared.a = 3 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1727] 0 data->shared.b = 3 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 2 data->shared.a = 1 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1730] EXPR 0 data->shared.a [L1730] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 185 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 61.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 57.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 482 IncrementalHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 24 mSDtfsCounter, 482 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=499occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 170 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 19:55:31,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69a6073-dd8c-45b9-906d-fed8c7e57818/bin/utaipan-Xvt2sAort0/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