./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9 --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 bc7a523a551103aeb2dd7ea3e708e9b42a327a50ce055e0932147e1f855a3338 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:11:12,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:11:12,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:11:12,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:11:12,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:11:12,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:11:12,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:11:12,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:11:12,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:11:12,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:11:12,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:11:12,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:11:12,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:11:12,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:11:12,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:11:12,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:11:12,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:11:12,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:11:12,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:11:12,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:11:12,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:11:12,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:11:12,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:11:12,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:11:12,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:11:12,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:11:12,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:11:12,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:11:12,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:11:12,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:11:12,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:11:12,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:11:12,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:11:12,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:11:12,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:11:12,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:11:12,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:11:12,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:11:12,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:11:12,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:11:12,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:11:12,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:11:12,791 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:11:12,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:11:12,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:11:12,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:11:12,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:11:12,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:11:12,794 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:11:12,794 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:11:12,794 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:11:12,795 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:11:12,796 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:11:12,796 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:11:12,796 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:11:12,797 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:11:12,797 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:11:12,797 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:11:12,798 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:11:12,798 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:11:12,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:11:12,799 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:11:12,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:11:12,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:11:12,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:11:12,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:11:12,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:11:12,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:11:12,801 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:11:12,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:11:12,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:11:12,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:11:12,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:11:12,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:11:12,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:11:12,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:11:12,804 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:11:12,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:11:12,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:11:12,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:11:12,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:11:12,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:11:12,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:11:12,805 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_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc7a523a551103aeb2dd7ea3e708e9b42a327a50ce055e0932147e1f855a3338 [2022-11-20 20:11:13,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:11:13,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:11:13,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:11:13,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:11:13,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:11:13,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c [2022-11-20 20:11:16,250 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:11:16,699 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:11:16,700 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c [2022-11-20 20:11:16,722 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/data/413041560/8c1a2427f7954f218950322525c5ea0b/FLAG60069ca2f [2022-11-20 20:11:16,738 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/data/413041560/8c1a2427f7954f218950322525c5ea0b [2022-11-20 20:11:16,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:11:16,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:11:16,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:11:16,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:11:16,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:11:16,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:11:16" (1/1) ... [2022-11-20 20:11:16,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca8dae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:16, skipping insertion in model container [2022-11-20 20:11:16,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:11:16" (1/1) ... [2022-11-20 20:11:16,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:11:16,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:11:17,099 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c[1719,1732] [2022-11-20 20:11:17,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:11:17,580 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:11:17,595 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c[1719,1732] [2022-11-20 20:11:18,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:11:18,044 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:11:18,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18 WrapperNode [2022-11-20 20:11:18,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:11:18,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:11:18,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:11:18,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:11:18,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,358 INFO L138 Inliner]: procedures = 58, calls = 3154, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5969 [2022-11-20 20:11:18,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:11:18,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:11:18,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:11:18,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:11:18,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,587 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:11:18,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:11:18,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:11:18,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:11:18,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (1/1) ... [2022-11-20 20:11:18,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:11:18,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:11:18,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:11:18,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6cec22-c1be-46cf-869a-90b39ca5dbbb/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:11:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:11:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-11-20 20:11:18,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-11-20 20:11:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-20 20:11:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-20 20:11:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-20 20:11:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-20 20:11:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:11:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-20 20:11:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-20 20:11:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-20 20:11:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-20 20:11:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-20 20:11:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-20 20:11:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:11:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-20 20:11:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-20 20:11:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-20 20:11:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-20 20:11:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-11-20 20:11:18,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-11-20 20:11:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-20 20:11:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-20 20:11:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-20 20:11:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-20 20:11:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-11-20 20:11:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-11-20 20:11:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:11:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-20 20:11:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-20 20:11:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:11:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-20 20:11:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-20 20:11:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-20 20:11:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-20 20:11:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-11-20 20:11:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-11-20 20:11:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-11-20 20:11:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-11-20 20:11:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:11:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:11:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:11:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:11:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:11:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-20 20:11:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-20 20:11:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-20 20:11:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-20 20:11:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-20 20:11:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-20 20:11:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-11-20 20:11:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-11-20 20:11:19,487 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:11:19,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:11:30,759 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:11:31,153 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:11:31,153 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:11:31,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:11:31 BoogieIcfgContainer [2022-11-20 20:11:31,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:11:31,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:11:31,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:11:31,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:11:31,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:11:16" (1/3) ... [2022-11-20 20:11:31,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afc5094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:11:31, skipping insertion in model container [2022-11-20 20:11:31,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:18" (2/3) ... [2022-11-20 20:11:31,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afc5094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:11:31, skipping insertion in model container [2022-11-20 20:11:31,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:11:31" (3/3) ... [2022-11-20 20:11:31,173 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M4-2.c [2022-11-20 20:11:31,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:11:31,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:11:31,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:11:31,322 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;@65fbb006, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:11:31,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:11:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 2295 states, 1331 states have (on average 1.199098422238918) internal successors, (1596), 1336 states have internal predecessors, (1596), 940 states have call successors, (940), 22 states have call predecessors, (940), 22 states have return successors, (940), 938 states have call predecessors, (940), 940 states have call successors, (940) [2022-11-20 20:11:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2022-11-20 20:11:31,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:31,395 INFO L195 NwaCegarLoop]: trace histogram [209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:11:31,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:11:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:31,402 INFO L85 PathProgramCache]: Analyzing trace with hash 689560035, now seen corresponding path program 1 times [2022-11-20 20:11:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:11:31,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581272699] [2022-11-20 20:11:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:31,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms