./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:34:06,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:34:06,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:34:06,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:34:06,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:34:06,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:34:06,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:34:06,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:34:06,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:34:06,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:34:06,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:34:06,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:34:06,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:34:06,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:34:06,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:34:06,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:34:06,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:34:06,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:34:06,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:34:06,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:34:06,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:34:06,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:34:06,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:34:06,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:34:06,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:34:06,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:34:06,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:34:06,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:34:06,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:34:06,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:34:06,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:34:06,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:34:06,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:34:06,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:34:06,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:34:06,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:34:06,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:34:06,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:34:06,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:34:06,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:34:06,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:34:06,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:34:06,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:34:06,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:34:06,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:34:06,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:34:06,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:34:06,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:34:06,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:34:06,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:34:06,829 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:34:06,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:34:06,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:34:06,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:34:06,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:34:06,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:34:06,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:34:06,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:34:06,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:34:06,831 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:34:06,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:34:06,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:34:06,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:34:06,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:34:06,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:34:06,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:34:06,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:34:06,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:34:06,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:34:06,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:34:06,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:34:06,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:34:06,833 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:34:06,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:34:06,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:34:06,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:34:06,834 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_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 [2021-12-06 22:34:07,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:34:07,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:34:07,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:34:07,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:34:07,025 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:34:07,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2021-12-06 22:34:07,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/data/a431e0ac1/a462510dda3e4cb9907c8887b66ef049/FLAG330ce4615 [2021-12-06 22:34:07,549 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:34:07,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2021-12-06 22:34:07,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/data/a431e0ac1/a462510dda3e4cb9907c8887b66ef049/FLAG330ce4615 [2021-12-06 22:34:07,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/data/a431e0ac1/a462510dda3e4cb9907c8887b66ef049 [2021-12-06 22:34:07,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:34:07,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:34:07,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:34:07,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:34:07,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:34:07,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:34:07" (1/1) ... [2021-12-06 22:34:07,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fadd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:07, skipping insertion in model container [2021-12-06 22:34:07,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:34:07" (1/1) ... [2021-12-06 22:34:07,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:34:07,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:34:07,748 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_bd13e7e7-5bcd-4bac-936b-c643b02860c3/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c[1762,1775] [2021-12-06 22:34:07,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:34:07,974 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:34:07,984 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_bd13e7e7-5bcd-4bac-936b-c643b02860c3/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c[1762,1775] [2021-12-06 22:34:08,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:34:08,152 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:34:08,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08 WrapperNode [2021-12-06 22:34:08,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:34:08,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:34:08,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:34:08,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:34:08,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,322 INFO L137 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4783 [2021-12-06 22:34:08,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:34:08,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:34:08,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:34:08,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:34:08,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:34:08,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:34:08,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:34:08,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:34:08,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (1/1) ... [2021-12-06 22:34:08,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:34:08,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:34:08,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:34:08,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd13e7e7-5bcd-4bac-936b-c643b02860c3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:34:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:34:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-06 22:34:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-06 22:34:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-06 22:34:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-06 22:34:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:34:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-06 22:34:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-06 22:34:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-06 22:34:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-06 22:34:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-06 22:34:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-06 22:34:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-06 22:34:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-06 22:34:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:34:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-06 22:34:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-06 22:34:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-06 22:34:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-06 22:34:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-06 22:34:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-06 22:34:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-06 22:34:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-06 22:34:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:34:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-06 22:34:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-06 22:34:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:34:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-06 22:34:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-06 22:34:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-06 22:34:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-06 22:34:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-06 22:34:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-06 22:34:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 22:34:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 22:34:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:34:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:34:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:34:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-06 22:34:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-06 22:34:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-06 22:34:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-06 22:34:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-06 22:34:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-06 22:34:08,869 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:34:08,870 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:34:15,720 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:34:15,738 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:34:15,739 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:34:15,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:34:15 BoogieIcfgContainer [2021-12-06 22:34:15,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:34:15,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:34:15,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:34:15,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:34:15,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:34:07" (1/3) ... [2021-12-06 22:34:15,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b857a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:34:15, skipping insertion in model container [2021-12-06 22:34:15,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:34:08" (2/3) ... [2021-12-06 22:34:15,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b857a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:34:15, skipping insertion in model container [2021-12-06 22:34:15,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:34:15" (3/3) ... [2021-12-06 22:34:15,750 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M1.c [2021-12-06 22:34:15,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:34:15,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:34:15,811 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:34:15,818 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:34:15,818 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:34:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 1938 states, 1146 states have (on average 1.2033158813263525) internal successors, (1379), 1150 states have internal predecessors, (1379), 772 states have call successors, (772), 18 states have call predecessors, (772), 18 states have return successors, (772), 770 states have call predecessors, (772), 772 states have call successors, (772) [2021-12-06 22:34:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2021-12-06 22:34:15,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:15,951 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 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] [2021-12-06 22:34:15,951 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:15,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash -112777684, now seen corresponding path program 1 times [2021-12-06 22:34:15,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:15,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111493303] [2021-12-06 22:34:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:15,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms