./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:18:52,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:18:52,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:18:52,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:18:52,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:18:52,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:18:52,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:18:52,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:18:52,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:18:52,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:18:52,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:18:52,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:18:52,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:18:52,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:18:52,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:18:52,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:18:52,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:18:52,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:18:52,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:18:52,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:18:52,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:18:52,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:18:52,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:18:52,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:18:52,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:18:52,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:18:52,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:18:52,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:18:52,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:18:52,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:18:52,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:18:52,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:18:52,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:18:52,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:18:52,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:18:52,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:18:52,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:18:52,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:18:52,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:18:52,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:18:52,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:18:52,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/config/svcomp-Reach-32bit-GemCutter_Default.epf [2021-11-23 14:18:52,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:18:52,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:18:52,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:18:52,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:18:52,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 14:18:52,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 14:18:52,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:18:52,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:18:52,908 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:18:52,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:18:52,909 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:18:52,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:18:52,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:18:52,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:18:52,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:18:52,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:18:52,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:18:52,911 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:18:52,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:18:52,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:18:52,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:18:52,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:18:52,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:18:52,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-11-23 14:18:52,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:18:52,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:18:52,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:18:52,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:18:52,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:18:52,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:18:52,915 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2021-11-23 14:18:52,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:18:52,915 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:18:52,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-11-23 14:18:52,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:18:52,916 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-11-23 14:18:52,916 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-11-23 14:18:52,916 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_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f [2021-11-23 14:18:53,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:18:53,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:18:53,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:18:53,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:18:53,209 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:18:53,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-11-23 14:18:53,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/data/cb165bbbb/996db042b6d845f1ada15f99b8df51da/FLAG3ac9e0019 [2021-11-23 14:18:53,835 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:18:53,838 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-11-23 14:18:53,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/data/cb165bbbb/996db042b6d845f1ada15f99b8df51da/FLAG3ac9e0019 [2021-11-23 14:18:54,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/data/cb165bbbb/996db042b6d845f1ada15f99b8df51da [2021-11-23 14:18:54,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:18:54,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:18:54,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:18:54,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:18:54,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:18:54,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199f5d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54, skipping insertion in model container [2021-11-23 14:18:54,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:18:54,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:18:54,439 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_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2021-11-23 14:18:54,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:18:54,451 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:18:54,472 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_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2021-11-23 14:18:54,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:18:54,488 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:18:54,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54 WrapperNode [2021-11-23 14:18:54,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:18:54,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:18:54,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:18:54,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:18:54,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,540 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2021-11-23 14:18:54,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:18:54,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:18:54,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:18:54,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:18:54,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:18:54,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:18:54,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:18:54,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:18:54,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (1/1) ... [2021-11-23 14:18:54,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:18:54,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:18:54,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:18:54,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:18:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:18:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 14:18:54,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 14:18:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 14:18:54,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 14:18:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:18:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 14:18:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:18:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 14:18:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 14:18:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:18:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:18:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:18:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 14:18:54,689 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 14:18:54,801 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:18:54,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:18:54,966 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:18:55,011 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:18:55,011 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 14:18:55,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:18:55 BoogieIcfgContainer [2021-11-23 14:18:55,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:18:55,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:18:55,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:18:55,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:18:55,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:18:54" (1/3) ... [2021-11-23 14:18:55,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6c37a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:18:55, skipping insertion in model container [2021-11-23 14:18:55,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:54" (2/3) ... [2021-11-23 14:18:55,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6c37a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:18:55, skipping insertion in model container [2021-11-23 14:18:55,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:18:55" (3/3) ... [2021-11-23 14:18:55,023 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2021-11-23 14:18:55,028 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 14:18:55,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:18:55,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 14:18:55,029 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 14:18:55,091 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,092 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,092 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,092 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,093 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,093 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,095 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,095 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,096 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,097 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,097 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,097 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,099 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,099 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,101 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,101 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,102 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,103 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,126 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,128 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 14:18:55,133 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-23 14:18:55,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-23 14:18:55,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:18:55,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-23 14:18:55,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-11-23 14:18:55,261 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-23 14:18:55,268 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=PARTIAL_ORDER_FA, 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 [2021-11-23 14:18:55,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 14:18:55,424 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:18:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:18:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2005667904, now seen corresponding path program 1 times [2021-11-23 14:18:55,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:18:55,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156576668] [2021-11-23 14:18:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:18:55,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:18:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:18:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:18:55,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:18:55,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156576668] [2021-11-23 14:18:55,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156576668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:18:55,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:18:55,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:18:55,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406098774] [2021-11-23 14:18:55,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:18:55,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 14:18:55,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:18:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 14:18:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:18:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:55,741 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:18:55,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:18:55,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:55,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:55,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:18:55,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:18:55,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:18:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 182590485, now seen corresponding path program 1 times [2021-11-23 14:18:55,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:18:55,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779782395] [2021-11-23 14:18:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:18:55,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:18:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:18:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:18:56,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:18:56,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779782395] [2021-11-23 14:18:56,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779782395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:18:56,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:18:56,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 14:18:56,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477033416] [2021-11-23 14:18:56,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:18:56,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:18:56,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:18:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:18:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:18:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:56,165 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:18:56,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:18:56,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:56,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:18:56,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:18:56,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:18:56,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:18:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1780222797, now seen corresponding path program 1 times [2021-11-23 14:18:56,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:18:56,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690056215] [2021-11-23 14:18:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:18:56,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:18:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:18:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:18:56,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:18:56,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690056215] [2021-11-23 14:18:56,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690056215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:18:56,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:18:56,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 14:18:56,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349739103] [2021-11-23 14:18:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:18:56,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:18:56,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:18:56,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:18:56,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:18:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:56,560 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:18:56,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:18:56,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:56,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:18:56,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:18:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:18:56,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:18:56,676 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:18:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:18:56,676 INFO L85 PathProgramCache]: Analyzing trace with hash 477941515, now seen corresponding path program 1 times [2021-11-23 14:18:56,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:18:56,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502753924] [2021-11-23 14:18:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:18:56,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:18:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:18:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:18:57,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:18:57,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502753924] [2021-11-23 14:18:57,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502753924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:18:57,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796816732] [2021-11-23 14:18:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:18:57,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:18:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:18:57,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:18:57,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 14:18:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:18:57,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 14:18:57,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:18:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:18:58,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:18:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:18:58,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796816732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:18:58,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:18:58,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2021-11-23 14:18:58,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078514291] [2021-11-23 14:18:58,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:18:58,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 14:18:58,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:18:58,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 14:18:58,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2021-11-23 14:18:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:58,928 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:18:58,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.25) internal successors, (136), 32 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:18:58,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:18:58,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:18:58,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:18:58,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-23 14:19:01,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 14:19:01,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:01,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:19:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -688870531, now seen corresponding path program 2 times [2021-11-23 14:19:01,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:01,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984217469] [2021-11-23 14:19:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:01,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:01,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:01,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984217469] [2021-11-23 14:19:01,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984217469] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:01,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865334758] [2021-11-23 14:19:01,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:19:01,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:01,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:01,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:01,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 14:19:02,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:19:02,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:19:02,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 14:19:02,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:02,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:03,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865334758] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:03,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:03,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2021-11-23 14:19:03,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779717999] [2021-11-23 14:19:03,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:03,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-23 14:19:03,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-23 14:19:03,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 14:19:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:03,823 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:03,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:03,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:03,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:03,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:03,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-23 14:19:03,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-23 14:19:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-23 14:19:06,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 14:19:06,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:06,391 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:19:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:06,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1072897149, now seen corresponding path program 3 times [2021-11-23 14:19:06,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:06,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603055015] [2021-11-23 14:19:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:06,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:19:06,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:06,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603055015] [2021-11-23 14:19:06,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603055015] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:06,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507137909] [2021-11-23 14:19:06,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:19:06,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:06,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:06,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 14:19:06,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-23 14:19:06,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:19:06,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-23 14:19:06,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:08,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:19:09,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507137909] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:09,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:09,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 22] total 51 [2021-11-23 14:19:09,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998074082] [2021-11-23 14:19:09,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:09,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-23 14:19:09,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-23 14:19:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2021-11-23 14:19:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:09,155 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:09,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.3137254901960786) internal successors, (169), 51 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:09,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:09,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:09,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:09,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-11-23 14:19:09,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-11-23 14:19:09,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-23 14:19:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-23 14:19:16,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 14:19:17,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:17,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:19:17,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:17,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1913276363, now seen corresponding path program 4 times [2021-11-23 14:19:17,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:17,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983006738] [2021-11-23 14:19:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:17,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:19:17,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:17,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983006738] [2021-11-23 14:19:17,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983006738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:17,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883467308] [2021-11-23 14:19:17,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 14:19:17,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:17,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:17,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:17,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 14:19:17,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 14:19:17,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:19:17,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 14:19:17,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:18,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:19,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883467308] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:19,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:19,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 21] total 52 [2021-11-23 14:19:19,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321041095] [2021-11-23 14:19:19,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:19,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-23 14:19:19,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-23 14:19:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2373, Unknown=0, NotChecked=0, Total=2652 [2021-11-23 14:19:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:19,932 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:19,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.3846153846153846) internal successors, (176), 52 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:19,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:19,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:19,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:19,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:19,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 82 states. [2021-11-23 14:19:19,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 110 states. [2021-11-23 14:19:19,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:19:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:19:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-23 14:19:25,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 14:19:25,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:25,350 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:19:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1473414489, now seen corresponding path program 5 times [2021-11-23 14:19:25,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:25,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370738898] [2021-11-23 14:19:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:25,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-23 14:19:25,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:25,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370738898] [2021-11-23 14:19:25,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370738898] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:25,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695157719] [2021-11-23 14:19:25,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 14:19:25,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:25,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:25,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 14:19:25,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-23 14:19:25,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:19:25,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 14:19:25,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 14:19:25,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-23 14:19:26,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695157719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:26,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:26,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2021-11-23 14:19:26,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041624534] [2021-11-23 14:19:26,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:26,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 14:19:26,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:26,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 14:19:26,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-23 14:19:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:26,161 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:26,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:26,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:26,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:26,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:26,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:26,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:19:26,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:19:26,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 89 states. [2021-11-23 14:19:26,163 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:19:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:19:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-23 14:19:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:26,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-23 14:19:26,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 14:19:26,490 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:19:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1431762483, now seen corresponding path program 6 times [2021-11-23 14:19:26,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:26,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845730051] [2021-11-23 14:19:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:26,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 14:19:27,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:27,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845730051] [2021-11-23 14:19:27,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845730051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:27,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272062254] [2021-11-23 14:19:27,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 14:19:27,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:27,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:27,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 14:19:27,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-23 14:19:27,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:19:27,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 14:19:27,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:28,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:29,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272062254] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:29,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:29,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30, 27] total 65 [2021-11-23 14:19:29,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382945180] [2021-11-23 14:19:29,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:29,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-23 14:19:29,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-23 14:19:29,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=3753, Unknown=0, NotChecked=0, Total=4160 [2021-11-23 14:19:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:29,811 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:29,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.0307692307692307) internal successors, (197), 65 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:29,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:29,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:29,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:29,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:29,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:19:29,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:19:29,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 90 states. [2021-11-23 14:19:29,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:29,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:19:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:19:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-23 14:19:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-23 14:19:35,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 14:19:35,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:35,906 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:19:35,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1830550451, now seen corresponding path program 7 times [2021-11-23 14:19:35,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:35,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008484620] [2021-11-23 14:19:35,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:35,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:19:36,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:36,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008484620] [2021-11-23 14:19:36,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008484620] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:36,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932299052] [2021-11-23 14:19:36,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 14:19:36,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:36,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:36,770 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:36,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 14:19:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:36,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-23 14:19:36,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:38,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:19:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 6 proven. 121 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:19:40,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932299052] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:19:40,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:19:40,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36, 31] total 84 [2021-11-23 14:19:40,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359509184] [2021-11-23 14:19:40,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:19:40,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-23 14:19:40,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:19:40,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-23 14:19:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=6496, Unknown=0, NotChecked=0, Total=6972 [2021-11-23 14:19:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:40,687 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:19:40,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.761904761904762) internal successors, (232), 84 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:19:40,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:40,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:40,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:40,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:40,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:19:40,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:19:40,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 90 states. [2021-11-23 14:19:40,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:40,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2021-11-23 14:19:40,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-11-23 14:19:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2021-11-23 14:19:55,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-23 14:19:56,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 14:19:56,014 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:19:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:19:56,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1221205551, now seen corresponding path program 8 times [2021-11-23 14:19:56,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:19:56,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156907152] [2021-11-23 14:19:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:19:56,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:19:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:19:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-11-23 14:19:56,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:19:56,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156907152] [2021-11-23 14:19:56,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156907152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:19:56,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989389432] [2021-11-23 14:19:56,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:19:56,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:19:56,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:19:56,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:19:56,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 14:19:56,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:19:56,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:19:56,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-23 14:19:56,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:19:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:19:59,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:20:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 1 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:20:02,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989389432] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:20:02,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:20:02,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 57, 47] total 113 [2021-11-23 14:20:02,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063395977] [2021-11-23 14:20:02,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:20:02,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-11-23 14:20:02,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:20:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-11-23 14:20:02,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=11570, Unknown=0, NotChecked=0, Total=12656 [2021-11-23 14:20:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:20:02,714 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:20:02,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.601769911504425) internal successors, (294), 113 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:20:02,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:20:02,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:20:02,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:20:02,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:20:02,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:20:02,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:20:02,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 90 states. [2021-11-23 14:20:02,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:20:02,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 156 states. [2021-11-23 14:20:02,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 269 states. [2021-11-23 14:20:02,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:20:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-11-23 14:20:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2021-11-23 14:20:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2021-11-23 14:20:15,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-23 14:20:15,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:20:15,694 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 14:20:15,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:20:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1428838575, now seen corresponding path program 9 times [2021-11-23 14:20:15,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:20:15,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2254646] [2021-11-23 14:20:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:20:15,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:20:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:20:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-23 14:20:16,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:20:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2254646] [2021-11-23 14:20:16,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2254646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:20:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078013790] [2021-11-23 14:20:16,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:20:16,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:20:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 [2021-11-23 14:20:16,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:20:16,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 14:20:16,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-23 14:20:16,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:20:16,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-23 14:20:16,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:20:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:20:20,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:20:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 11 proven. 551 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 14:20:35,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078013790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:20:35,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:20:35,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 63, 58] total 130 [2021-11-23 14:20:35,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102404674] [2021-11-23 14:20:35,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:20:35,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-23 14:20:35,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:20:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-23 14:20:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=15578, Unknown=0, NotChecked=0, Total=16770 [2021-11-23 14:20:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:20:35,655 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-23 14:20:35,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.376923076923077) internal successors, (309), 130 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:20:35,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:20:35,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 95 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 125 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 90 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 156 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 269 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 241 states. [2021-11-23 14:20:35,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:21:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:21:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:21:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:21:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-23 14:21:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-11-23 14:21:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-11-23 14:21:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-23 14:21:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:21:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2021-11-23 14:21:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2021-11-23 14:21:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2021-11-23 14:21:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2021-11-23 14:21:15,608 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-23 14:21:15,608 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-23 14:21:15,608 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-23 14:21:15,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-23 14:21:15,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 14:21:15,822 INFO L732 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2021-11-23 14:21:15,824 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-23 14:21:15,824 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 14:21:15,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:21:15 BasicIcfg [2021-11-23 14:21:15,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 14:21:15,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 14:21:15,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 14:21:15,828 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 14:21:15,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:18:55" (3/4) ... [2021-11-23 14:21:15,831 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 14:21:15,836 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-23 14:21:15,837 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-23 14:21:15,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-23 14:21:15,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 14:21:15,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 14:21:15,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 14:21:15,876 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/witness.graphml [2021-11-23 14:21:15,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 14:21:15,877 INFO L158 Benchmark]: Toolchain (without parser) took 141689.63ms. Allocated memory was 119.5MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 85.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 209.3MB. Max. memory is 16.1GB. [2021-11-23 14:21:15,878 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 81.8MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 14:21:15,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.76ms. Allocated memory is still 119.5MB. Free memory was 84.8MB in the beginning and 95.8MB in the end (delta: -11.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 14:21:15,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.15ms. Allocated memory is still 119.5MB. Free memory was 95.8MB in the beginning and 94.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 14:21:15,879 INFO L158 Benchmark]: Boogie Preprocessor took 53.76ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 93.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 14:21:15,879 INFO L158 Benchmark]: RCFGBuilder took 417.23ms. Allocated memory is still 119.5MB. Free memory was 93.1MB in the beginning and 79.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 14:21:15,880 INFO L158 Benchmark]: TraceAbstraction took 140811.50ms. Allocated memory was 119.5MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 79.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 201.7MB. Max. memory is 16.1GB. [2021-11-23 14:21:15,880 INFO L158 Benchmark]: Witness Printer took 49.28ms. Allocated memory is still 1.3GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 14:21:15,883 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 81.8MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.76ms. Allocated memory is still 119.5MB. Free memory was 84.8MB in the beginning and 95.8MB in the end (delta: -11.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.15ms. Allocated memory is still 119.5MB. Free memory was 95.8MB in the beginning and 94.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 53.76ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 93.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.23ms. Allocated memory is still 119.5MB. Free memory was 93.1MB in the beginning and 79.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 140811.50ms. Allocated memory was 119.5MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 79.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 201.7MB. Max. memory is 16.1GB. * Witness Printer took 49.28ms. Allocated memory is still 1.3GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7285, positive: 4349, positive conditional: 3873, positive unconditional: 476, negative: 2936, negative conditional: 2933, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4398, positive: 4349, positive conditional: 3873, positive unconditional: 476, negative: 49, negative conditional: 46, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4398, positive: 4349, positive conditional: 3873, positive unconditional: 476, negative: 49, negative conditional: 46, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4904, positive: 4349, positive conditional: 3683, positive unconditional: 666, negative: 555, negative conditional: 506, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4904, positive: 4349, positive conditional: 2961, positive unconditional: 1388, negative: 555, negative conditional: 416, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4904, positive: 4349, positive conditional: 2961, positive unconditional: 1388, negative: 555, negative conditional: 416, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 531, positive: 462, positive conditional: 13, positive unconditional: 449, negative: 69, negative conditional: 66, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 531, positive: 449, positive conditional: 0, positive unconditional: 449, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 69, negative conditional: 66, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 262, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 231, negative conditional: 164, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4904, positive: 3887, positive conditional: 2948, positive unconditional: 939, negative: 486, negative conditional: 350, negative unconditional: 136, unknown: 531, unknown conditional: 79, unknown unconditional: 452] , Statistics on independence cache: Total cache size (in pairs): 531, Positive cache size: 462, Positive conditional cache size: 13, Positive unconditional cache size: 449, Negative cache size: 69, Negative conditional cache size: 66, Negative unconditional cache size: 3, Eliminated conditions: 812, Maximal queried relation: 11, Independence queries for same thread: 2887 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 106, Number of trivial persistent sets: 81, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 479, positive: 476, positive conditional: 0, positive unconditional: 476, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7285, positive: 4349, positive conditional: 3873, positive unconditional: 476, negative: 2936, negative conditional: 2933, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4398, positive: 4349, positive conditional: 3873, positive unconditional: 476, negative: 49, negative conditional: 46, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4398, positive: 4349, positive conditional: 3873, positive unconditional: 476, negative: 49, negative conditional: 46, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4904, positive: 4349, positive conditional: 3683, positive unconditional: 666, negative: 555, negative conditional: 506, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4904, positive: 4349, positive conditional: 2961, positive unconditional: 1388, negative: 555, negative conditional: 416, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4904, positive: 4349, positive conditional: 2961, positive unconditional: 1388, negative: 555, negative conditional: 416, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 531, positive: 462, positive conditional: 13, positive unconditional: 449, negative: 69, negative conditional: 66, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 531, positive: 449, positive conditional: 0, positive unconditional: 449, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 69, negative conditional: 66, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 262, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 231, negative conditional: 164, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4904, positive: 3887, positive conditional: 2948, positive unconditional: 939, negative: 486, negative conditional: 350, negative unconditional: 136, unknown: 531, unknown conditional: 79, unknown unconditional: 452] , Statistics on independence cache: Total cache size (in pairs): 531, Positive cache size: 462, Positive conditional cache size: 13, Positive unconditional cache size: 449, Negative cache size: 69, Negative conditional cache size: 66, Negative unconditional cache size: 3, Eliminated conditions: 812, Maximal queried relation: 11, Independence queries for same thread: 2887 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 78]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 98 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 140.6s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 92.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 1523, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 44.9s InterpolantComputationTime, 1989 NumberOfCodeBlocks, 1983 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 2857 ConstructedInterpolants, 0 QuantifiedInterpolants, 36414 SizeOfPredicates, 183 NumberOfNonLiveVariables, 1655 ConjunctsInSsa, 443 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 702/4057 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-23 14:21:15,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 14:21:16,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d60f6a-f7a0-4fc9-8f74-760dd54a1794/bin/ugemcutter-aZbSL5k0Dw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE