./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta --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 0578c41b95f42d85ac77fb0006dcba936c74afd1d4a8fb3392e12544fff9b4d0 --- 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-dbf71c6-m [2022-10-17 17:37:50,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:50,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:50,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:50,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:50,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:50,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:50,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:50,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:50,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:50,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:50,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:50,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:50,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:50,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:50,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:50,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:50,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:50,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:50,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:50,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:50,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:50,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:50,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:50,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:50,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:50,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:50,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:50,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:50,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:50,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:50,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:50,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:50,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:50,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:50,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:50,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:50,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:50,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:50,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:50,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:50,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:37:50,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:50,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:50,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:50,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:50,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:50,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:50,674 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:50,675 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:50,675 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:50,675 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:50,675 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:50,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:50,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:50,676 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:50,676 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:50,677 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:50,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:50,677 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:50,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:50,678 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:37:50,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:50,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:37:50,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:50,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:50,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:50,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:50,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:37:50,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:50,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:50,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:50,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:50,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:50,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:50,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:50,682 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:50,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:50,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:50,683 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:50,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:50,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:50,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:50,684 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_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0578c41b95f42d85ac77fb0006dcba936c74afd1d4a8fb3392e12544fff9b4d0 [2022-10-17 17:37:50,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:51,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:51,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:51,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:51,036 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:51,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c [2022-10-17 17:37:51,118 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/data/68b3ef4e6/c079732d9e154418b85a6377277aaf45/FLAG853c259bb [2022-10-17 17:37:51,955 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:51,956 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c [2022-10-17 17:37:51,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/data/68b3ef4e6/c079732d9e154418b85a6377277aaf45/FLAG853c259bb [2022-10-17 17:37:52,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/data/68b3ef4e6/c079732d9e154418b85a6377277aaf45 [2022-10-17 17:37:52,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:52,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:52,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:52,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:52,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:52,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:52" (1/1) ... [2022-10-17 17:37:52,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9fc322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:52, skipping insertion in model container [2022-10-17 17:37:52,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:52" (1/1) ... [2022-10-17 17:37:52,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:52,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:52,516 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c[1719,1732] [2022-10-17 17:37:53,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:53,039 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:53,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-2.c[1719,1732] [2022-10-17 17:37:53,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:53,371 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:53,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53 WrapperNode [2022-10-17 17:37:53,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:53,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:53,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:53,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:53,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:53,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:53,679 INFO L138 Inliner]: procedures = 58, calls = 3129, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5929 [2022-10-17 17:37:53,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:53,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:53,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:53,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:53,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:53,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:53,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:53,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:53,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:54,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:54,035 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:54,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:54,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:54,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:54,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:54,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:54,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (1/1) ... [2022-10-17 17:37:54,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:54,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:54,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:54,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ebf3a-0edf-46cb-8a26-37ef601dfe42/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-10-17 17:37:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-10-17 17:37:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-17 17:37:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-17 17:37:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-17 17:37:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-17 17:37:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:37:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-17 17:37:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-17 17:37:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-17 17:37:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-17 17:37:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-17 17:37:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-17 17:37:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:37:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-17 17:37:54,182 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-17 17:37:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-17 17:37:54,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-17 17:37:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-10-17 17:37:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-10-17 17:37:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-17 17:37:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-17 17:37:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-17 17:37:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-17 17:37:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-17 17:37:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-10-17 17:37:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:37:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:37:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-17 17:37:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-17 17:37:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-17 17:37:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-17 17:37:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-10-17 17:37:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-10-17 17:37:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-17 17:37:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-17 17:37:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:37:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:37:54,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:37:54,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:54,187 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-17 17:37:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-17 17:37:54,188 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-17 17:37:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-17 17:37:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-17 17:37:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-17 17:37:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-10-17 17:37:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-10-17 17:37:54,784 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:54,786 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:38:05,261 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:38:05,702 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:38:05,703 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:38:05,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:05 BoogieIcfgContainer [2022-10-17 17:38:05,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:38:05,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:38:05,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:38:05,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:38:05,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:52" (1/3) ... [2022-10-17 17:38:05,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac2a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:05, skipping insertion in model container [2022-10-17 17:38:05,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:53" (2/3) ... [2022-10-17 17:38:05,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac2a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:05, skipping insertion in model container [2022-10-17 17:38:05,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:05" (3/3) ... [2022-10-17 17:38:05,790 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M1-2.c [2022-10-17 17:38:05,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:38:05,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:38:05,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:38:05,946 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;@7cf4b3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:38:05,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:38:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 2289 states, 1328 states have (on average 1.1995481927710843) internal successors, (1593), 1333 states have internal predecessors, (1593), 938 states have call successors, (938), 21 states have call predecessors, (938), 21 states have return successors, (938), 936 states have call predecessors, (938), 938 states have call successors, (938) [2022-10-17 17:38:06,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2022-10-17 17:38:06,047 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:06,049 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] [2022-10-17 17:38:06,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -826604835, now seen corresponding path program 1 times [2022-10-17 17:38:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:06,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350485972] [2022-10-17 17:38:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:06,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms