./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w --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 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 09:16:10,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 09:16:10,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 09:16:11,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 09:16:11,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 09:16:11,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 09:16:11,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 09:16:11,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 09:16:11,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 09:16:11,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 09:16:11,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 09:16:11,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 09:16:11,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 09:16:11,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 09:16:11,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 09:16:11,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 09:16:11,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 09:16:11,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 09:16:11,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 09:16:11,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 09:16:11,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 09:16:11,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 09:16:11,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 09:16:11,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 09:16:11,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 09:16:11,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 09:16:11,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 09:16:11,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 09:16:11,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 09:16:11,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 09:16:11,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 09:16:11,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 09:16:11,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 09:16:11,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 09:16:11,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 09:16:11,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 09:16:11,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 09:16:11,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 09:16:11,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 09:16:11,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 09:16:11,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 09:16:11,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-12-13 09:16:11,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 09:16:11,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 09:16:11,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 09:16:11,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 09:16:11,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 09:16:11,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 09:16:11,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 09:16:11,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 09:16:11,051 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 09:16:11,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 09:16:11,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 09:16:11,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 09:16:11,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 09:16:11,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 09:16:11,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 09:16:11,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 09:16:11,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 09:16:11,052 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 09:16:11,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 09:16:11,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 09:16:11,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 09:16:11,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 09:16:11,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 09:16:11,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 09:16:11,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:16:11,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 09:16:11,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 09:16:11,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 09:16:11,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 09:16:11,054 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-12-13 09:16:11,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 09:16:11,055 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-13 09:16:11,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-12-13 09:16:11,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 09:16:11,055 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-12-13 09:16:11,055 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-12-13 09:16:11,056 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_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-12-13 09:16:11,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 09:16:11,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 09:16:11,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 09:16:11,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 09:16:11,282 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 09:16:11,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-12-13 09:16:13,990 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 09:16:14,191 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 09:16:14,191 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-12-13 09:16:14,201 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/data/42493b19e/f85e58954c664b3bac06fd9d7fecb80d/FLAGa76452f6e [2022-12-13 09:16:14,211 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/data/42493b19e/f85e58954c664b3bac06fd9d7fecb80d [2022-12-13 09:16:14,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 09:16:14,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 09:16:14,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 09:16:14,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 09:16:14,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 09:16:14,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15998353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14, skipping insertion in model container [2022-12-13 09:16:14,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 09:16:14,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 09:16:14,349 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 09:16:14,560 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-12-13 09:16:14,565 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-12-13 09:16:14,566 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-12-13 09:16:14,653 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-12-13 09:16:14,653 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-12-13 09:16:14,655 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-12-13 09:16:14,656 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-12-13 09:16:14,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:16:14,672 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 09:16:14,683 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 09:16:14,709 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-12-13 09:16:14,710 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-12-13 09:16:14,711 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-12-13 09:16:14,722 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-12-13 09:16:14,723 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-12-13 09:16:14,724 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-12-13 09:16:14,725 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-12-13 09:16:14,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:16:14,805 INFO L208 MainTranslator]: Completed translation [2022-12-13 09:16:14,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14 WrapperNode [2022-12-13 09:16:14,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 09:16:14,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 09:16:14,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 09:16:14,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 09:16:14,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,865 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 203 [2022-12-13 09:16:14,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 09:16:14,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 09:16:14,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 09:16:14,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 09:16:14,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 09:16:14,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 09:16:14,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 09:16:14,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 09:16:14,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (1/1) ... [2022-12-13 09:16:14,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:16:14,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:16:14,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 09:16:14,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 09:16:14,964 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-12-13 09:16:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-12-13 09:16:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-12-13 09:16:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-12-13 09:16:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 09:16:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 09:16:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 09:16:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 09:16:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 09:16:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 09:16:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 09:16:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 09:16:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 09:16:14,967 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 09:16:15,078 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 09:16:15,080 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 09:16:15,350 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 09:16:15,361 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 09:16:15,361 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 09:16:15,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:16:15 BoogieIcfgContainer [2022-12-13 09:16:15,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 09:16:15,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 09:16:15,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 09:16:15,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 09:16:15,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:16:14" (1/3) ... [2022-12-13 09:16:15,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e946d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:16:15, skipping insertion in model container [2022-12-13 09:16:15,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:14" (2/3) ... [2022-12-13 09:16:15,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e946d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:16:15, skipping insertion in model container [2022-12-13 09:16:15,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:16:15" (3/3) ... [2022-12-13 09:16:15,372 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-12-13 09:16:15,380 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 09:16:15,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 09:16:15,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 09:16:15,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 09:16:15,483 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 09:16:15,517 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:16:15,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-12-13 09:16:15,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:16:15,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-12-13 09:16:15,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-12-13 09:16:15,547 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-12-13 09:16:15,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-12-13 09:16:15,561 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@730211be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:16:15,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 09:16:15,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-12-13 09:16:15,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-13 09:16:15,909 INFO L445 BasicCegarLoop]: Path program histogram: [] [2022-12-13 09:16:15,911 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (1/2) [2022-12-13 09:16:15,919 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:16:15,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-12-13 09:16:15,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:16:15,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-12-13 09:16:15,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-12-13 09:16:15,955 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-12-13 09:16:15,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == reader_twoThread1of1ForFork1 ======== [2022-12-13 09:16:15,956 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@730211be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:16:15,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 09:16:16,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 09:16:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:16:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1695958382, now seen corresponding path program 1 times [2022-12-13 09:16:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:16:16,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622281841] [2022-12-13 09:16:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:16:16,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:16:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:16:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:16:17,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:16:17,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622281841] [2022-12-13 09:16:17,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622281841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:16:17,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:16:17,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-13 09:16:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450683813] [2022-12-13 09:16:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:16:17,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 09:16:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:16:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 09:16:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-12-13 09:16:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:16:17,962 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:16:17,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:16:17,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:16:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 09:16:19,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 09:16:19,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 09:16:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:16:19,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1927706259, now seen corresponding path program 1 times [2022-12-13 09:16:19,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:16:19,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821389327] [2022-12-13 09:16:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:16:19,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:16:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:16:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 09:16:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:16:19,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821389327] [2022-12-13 09:16:19,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821389327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:16:19,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:16:19,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:16:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805469422] [2022-12-13 09:16:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:16:19,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:16:19,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:16:19,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:16:19,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:16:19,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:16:19,952 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:16:19,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:16:19,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-12-13 09:16:19,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:16:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 09:16:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:16:20,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 09:16:20,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 09:16:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:16:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash 49218181, now seen corresponding path program 1 times [2022-12-13 09:16:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:16:20,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408102780] [2022-12-13 09:16:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:16:20,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:16:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:16:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:16:22,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:16:22,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408102780] [2022-12-13 09:16:22,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408102780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:16:22,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057386619] [2022-12-13 09:16:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:16:22,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:16:22,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:16:22,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:16:22,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 09:16:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:16:22,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 94 conjunts are in the unsatisfiable core [2022-12-13 09:16:22,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:16:22,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 09:16:22,446 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 09:16:22,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 09:16:22,467 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 09:16:22,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:16:22,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 09:16:22,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:16:22,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 09:16:22,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-12-13 09:16:22,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-12-13 09:16:23,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:16:23,479 INFO L321 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2022-12-13 09:16:23,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 38 [2022-12-13 09:16:23,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:16:23,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2022-12-13 09:16:24,017 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-12-13 09:16:24,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 20 [2022-12-13 09:16:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:16:24,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:16:29,229 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 Int) (v_ArrVal_102 Int) (v_ArrVal_100 (Array Int Int))) (or (< 0 (let ((.cse0 (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_100))) (store .cse1 |c_ULTIMATE.start_main_~#r~3#1.base| (let ((.cse3 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (store (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse3) 4) 4) v_ArrVal_102)) .cse3 v_ArrVal_103)))) |c_reader_twoThread1of1ForFork1_~r~2#1.base|))) (select .cse0 (+ (* (select .cse0 |c_reader_twoThread1of1ForFork1_~r~2#1.offset|) 4) |c_reader_twoThread1of1ForFork1_~r~2#1.offset| 4)))) (< v_ArrVal_102 1))) is different from false [2022-12-13 09:16:29,360 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 Int) (v_ArrVal_102 Int) (v_ArrVal_100 (Array Int Int))) (or (< 0 (let ((.cse0 (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_100))) (store .cse1 |c_ULTIMATE.start_main_~#r~3#1.base| (let ((.cse3 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (store (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse3) 4) 4) v_ArrVal_102)) .cse3 v_ArrVal_103)))) |c_reader_twoThread1of1ForFork1_~arg#1.base|))) (select .cse0 (+ (* (select .cse0 |c_reader_twoThread1of1ForFork1_~arg#1.offset|) 4) 4 |c_reader_twoThread1of1ForFork1_~arg#1.offset|)))) (< v_ArrVal_102 1))) is different from false [2022-12-13 09:16:29,684 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 Int) (v_ArrVal_102 Int) (v_ArrVal_100 (Array Int Int))) (or (< 0 (let ((.cse1 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_100) |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse1) 4) 4) v_ArrVal_102)))) (select (store .cse0 .cse1 v_ArrVal_103) (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse0 |c_ULTIMATE.start_main_~#r~3#1.offset|) 4) 4))))) (< v_ArrVal_102 1))) is different from false [2022-12-13 09:16:29,696 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 Int) (v_ArrVal_102 Int) (v_ArrVal_99 (Array Int Int)) (v_ArrVal_100 (Array Int Int))) (or (< 0 (let ((.cse1 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (let ((.cse0 (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_99) |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_100) |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse1) 4) 4) v_ArrVal_102)))) (select (store .cse0 .cse1 v_ArrVal_103) (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse0 |c_ULTIMATE.start_main_~#r~3#1.offset|) 4) 4))))) (< v_ArrVal_102 1))) is different from false [2022-12-13 09:16:29,727 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 Int) (v_ArrVal_102 Int) (v_ArrVal_99 (Array Int Int)) (v_ArrVal_100 (Array Int Int))) (or (< 0 (let ((.cse1 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (let ((.cse0 (let ((.cse2 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_ring_init_~r#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ring_init_~r#1.base|) |c_ULTIMATE.start_ring_init_~r#1.offset| 0)) |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_99) |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_100) |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse1) 4) 4) v_ArrVal_102)))) (select (store .cse0 .cse1 v_ArrVal_103) (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse0 |c_ULTIMATE.start_main_~#r~3#1.offset|) 4) 4))))) (< v_ArrVal_102 1))) is different from false [2022-12-13 09:16:29,739 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:16:29,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 92 [2022-12-13 09:16:29,748 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:16:29,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 216 [2022-12-13 09:16:29,797 INFO L321 Elim1Store]: treesize reduction 12, result has 77.8 percent of original size [2022-12-13 09:16:29,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 754 treesize of output 604 [2022-12-13 09:16:29,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:16:29,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:16:29,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 556 treesize of output 507 [2022-12-13 09:16:29,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-12-13 09:16:31,025 INFO L321 Elim1Store]: treesize reduction 12, result has 91.1 percent of original size [2022-12-13 09:16:31,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 1026 treesize of output 899 [2022-12-13 09:16:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:16:36,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057386619] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:16:36,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:16:36,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33, 32] total 75 [2022-12-13 09:16:36,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000039924] [2022-12-13 09:16:36,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:16:36,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-13 09:16:36,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:16:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-13 09:16:36,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4583, Unknown=25, NotChecked=700, Total=5550 [2022-12-13 09:16:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:16:36,055 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:16:36,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.293333333333333) internal successors, (322), 75 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:16:36,056 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-12-13 09:16:36,056 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:16:36,056 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:16:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 09:16:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:16:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 09:16:42,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 09:16:42,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 09:16:42,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 09:16:42,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:16:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash -765958656, now seen corresponding path program 1 times [2022-12-13 09:16:42,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:16:42,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781005181] [2022-12-13 09:16:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:16:42,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:16:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:16:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:16:45,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:16:45,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781005181] [2022-12-13 09:16:45,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781005181] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:16:45,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711518980] [2022-12-13 09:16:45,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:16:45,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:16:45,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:16:45,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:16:45,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 09:16:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:16:45,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-13 09:16:45,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:16:45,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 09:16:45,144 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 09:16:45,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 09:16:45,159 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 09:16:45,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:16:45,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 09:16:45,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:16:45,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 09:16:45,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-13 09:16:45,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-13 09:16:46,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:16:46,575 INFO L321 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2022-12-13 09:16:46,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 38 [2022-12-13 09:16:46,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:16:46,667 INFO L321 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2022-12-13 09:16:46,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 41 [2022-12-13 09:16:46,996 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-12-13 09:16:46,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 20 [2022-12-13 09:16:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 09:16:47,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:17:01,640 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_164 Int) (v_ArrVal_161 Int)) (or (< 1 v_ArrVal_161) (< (let ((.cse0 (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_160))) (store .cse1 |c_ULTIMATE.start_main_~#r~3#1.base| (let ((.cse3 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (store (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse3) 4) 4) v_ArrVal_161)) .cse3 v_ArrVal_164)))) |c_reader_twoThread1of1ForFork1_~r~2#1.base|))) (select .cse0 (+ |c_reader_twoThread1of1ForFork1_~r~2#1.offset| 4 (* (select .cse0 |c_reader_twoThread1of1ForFork1_~r~2#1.offset|) 4)))) 9))) is different from false [2022-12-13 09:17:01,762 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_164 Int) (v_ArrVal_161 Int)) (or (< 1 v_ArrVal_161) (< (let ((.cse0 (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_160))) (store .cse1 |c_ULTIMATE.start_main_~#r~3#1.base| (let ((.cse3 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (store (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse3) 4) 4) v_ArrVal_161)) .cse3 v_ArrVal_164)))) |c_reader_twoThread1of1ForFork1_~arg#1.base|))) (select .cse0 (+ (* (select .cse0 |c_reader_twoThread1of1ForFork1_~arg#1.offset|) 4) 4 |c_reader_twoThread1of1ForFork1_~arg#1.offset|))) 9))) is different from false [2022-12-13 09:17:01,779 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_164 Int) (v_ArrVal_161 Int)) (or (< 1 v_ArrVal_161) (< (let ((.cse0 (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_160))) (store .cse1 |c_ULTIMATE.start_main_~#r~3#1.base| (let ((.cse3 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (store (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse3) 4) 4) v_ArrVal_161)) .cse3 v_ArrVal_164)))) |c_reader_twoThread1of1ForFork1_#in~arg#1.base|))) (select .cse0 (+ |c_reader_twoThread1of1ForFork1_#in~arg#1.offset| (* 4 (select .cse0 |c_reader_twoThread1of1ForFork1_#in~arg#1.offset|)) 4))) 9))) is different from false [2022-12-13 09:17:04,087 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_164 Int) (v_ArrVal_161 Int) (v_ArrVal_159 (Array Int Int))) (or (< 1 v_ArrVal_161) (< (let ((.cse1 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (let ((.cse0 (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_160) |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse1) 4) 4) v_ArrVal_161)))) (select (store .cse0 .cse1 v_ArrVal_164) (+ (* (select .cse0 |c_ULTIMATE.start_main_~#r~3#1.offset|) 4) |c_ULTIMATE.start_main_~#r~3#1.offset| 4)))) 9))) is different from false [2022-12-13 09:17:04,124 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_164 Int) (v_ArrVal_161 Int) (v_ArrVal_159 (Array Int Int))) (or (< 1 v_ArrVal_161) (< (let ((.cse1 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| 20))) (let ((.cse0 (let ((.cse2 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_ring_init_~r#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ring_init_~r#1.base|) |c_ULTIMATE.start_ring_init_~r#1.offset| 0)) |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~#writer~0#1.base| v_ArrVal_160) |c_ULTIMATE.start_main_~#r~3#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse2 .cse1) 4) 4) v_ArrVal_161)))) (select (store .cse0 .cse1 v_ArrVal_164) (+ |c_ULTIMATE.start_main_~#r~3#1.offset| (* (select .cse0 |c_ULTIMATE.start_main_~#r~3#1.offset|) 4) 4)))) 9))) is different from false [2022-12-13 09:17:04,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:17:04,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 92 [2022-12-13 09:17:04,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:17:04,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 216 [2022-12-13 09:17:04,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:17:04,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:17:04,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 376 treesize of output 329 [2022-12-13 09:17:04,255 INFO L321 Elim1Store]: treesize reduction 10, result has 81.5 percent of original size [2022-12-13 09:17:04,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 1832 treesize of output 1380 [2022-12-13 09:17:04,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:17:04,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 9 [2022-12-13 09:17:05,527 INFO L321 Elim1Store]: treesize reduction 10, result has 92.6 percent of original size [2022-12-13 09:17:05,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 1323 treesize of output 1198 [2022-12-13 09:17:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 09:17:13,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711518980] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:17:13,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:17:13,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 34, 32] total 94 [2022-12-13 09:17:13,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101465662] [2022-12-13 09:17:13,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:17:13,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-12-13 09:17:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:17:13,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-12-13 09:17:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=7514, Unknown=29, NotChecked=890, Total=8742 [2022-12-13 09:17:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:17:13,450 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:17:13,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.7872340425531914) internal successors, (356), 94 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:17:13,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-12-13 09:17:13,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:17:13,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2022-12-13 09:17:13,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:17:24,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:27,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:30,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:36,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:39,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:41,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:43,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:45,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:52,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:54,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:56,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:17:58,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:00,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:17,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:19,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:21,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:23,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:25,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:27,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:29,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:31,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:33,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:18:35,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:03,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:06,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:08,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:12,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:15,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:30,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:32,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:34,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:36,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:38,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:19:40,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:09,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:11,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:13,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:15,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:17,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:19,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:21,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:23,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:25,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:27,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:29,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:31,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:33,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:35,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:37,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:20:58,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:21:00,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:21:03,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:21:07,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:21:18,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:21:22,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:21:24,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:10,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:12,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:14,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:16,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:17,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:19,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:37,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:39,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:22:41,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:23:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 09:23:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:23:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 09:23:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-12-13 09:23:18,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 09:23:18,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:23:18,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-13 09:23:18,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:23:18,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1370718709, now seen corresponding path program 1 times [2022-12-13 09:23:18,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:23:18,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467927955] [2022-12-13 09:23:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:23:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:23:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:23:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:23:24,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:23:24,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467927955] [2022-12-13 09:23:24,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467927955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:23:24,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231720726] [2022-12-13 09:23:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:23:24,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:23:24,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:23:24,841 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:23:24,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46577259-b1b9-444a-95c2-31f728f09eca/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 09:23:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:23:24,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 157 conjunts are in the unsatisfiable core [2022-12-13 09:23:24,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:23:26,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 09:23:29,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:23:29,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:23:29,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:23:29,769 INFO L321 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2022-12-13 09:23:29,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 146 treesize of output 93 [2022-12-13 09:23:30,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:23:30,517 INFO L321 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2022-12-13 09:23:30,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 243 treesize of output 146 [2022-12-13 09:23:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 52 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:23:34,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:26:21,151 WARN L233 SmtUtils]: Spent 2.08m on a formula simplification. DAG size of input: 514 DAG size of output: 412 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 09:26:21,153 INFO L321 Elim1Store]: treesize reduction 401, result has 72.3 percent of original size [2022-12-13 09:26:21,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 19 new quantified variables, introduced 92 case distinctions, treesize of input 1088616583 treesize of output 940529662