./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH --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 bc410c23b8a40101ed787fe72a0515ef047b7022a45484b309d3277414201100 --- 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-38b53e6 [2022-11-25 18:47:19,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:47:19,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:47:19,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:47:19,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:47:19,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:47:19,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:47:19,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:47:19,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:47:19,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:47:19,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:47:19,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:47:19,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:47:19,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:47:19,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:47:19,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:47:19,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:47:19,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:47:19,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:47:19,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:47:19,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:47:19,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:47:19,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:47:19,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:47:19,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:47:19,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:47:19,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:47:19,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:47:19,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:47:19,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:47:19,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:47:19,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:47:19,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:47:19,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:47:19,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:47:19,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:47:19,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:47:19,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:47:19,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:47:19,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:47:19,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:47:19,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-11-25 18:47:19,925 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:47:19,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:47:19,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:47:19,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:47:19,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:47:19,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:47:19,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:47:19,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:47:19,929 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:47:19,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:47:19,930 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:47:19,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:47:19,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:47:19,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:47:19,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:47:19,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:47:19,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:47:19,932 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:47:19,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:47:19,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:47:19,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:47:19,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:47:19,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:47:19,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:47:19,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:47:19,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:47:19,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:47:19,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:47:19,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:47:19,935 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-11-25 18:47:19,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:47:19,935 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-25 18:47:19,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-25 18:47:19,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:47:19,936 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-25 18:47:19,936 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-25 18:47:19,937 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_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc410c23b8a40101ed787fe72a0515ef047b7022a45484b309d3277414201100 [2022-11-25 18:47:20,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:47:20,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:47:20,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:47:20,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:47:20,276 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:47:20,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i [2022-11-25 18:47:23,207 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:47:23,534 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:47:23,534 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i [2022-11-25 18:47:23,546 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/data/6ad7ef644/6cfd9380ade048cabe582929489047f0/FLAG5cb776f76 [2022-11-25 18:47:23,560 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/data/6ad7ef644/6cfd9380ade048cabe582929489047f0 [2022-11-25 18:47:23,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:47:23,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:47:23,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:47:23,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:47:23,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:47:23,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:47:23" (1/1) ... [2022-11-25 18:47:23,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b11fc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:23, skipping insertion in model container [2022-11-25 18:47:23,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:47:23" (1/1) ... [2022-11-25 18:47:23,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:47:23,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:47:23,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:47:23,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:47:23,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:47:23,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:47:23,953 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_45d4ad94-c404-4163-978d-c889a490a22b/sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i[30195,30208] [2022-11-25 18:47:23,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:47:23,989 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:47:24,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:47:24,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:47:24,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:47:24,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:47:24,060 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_45d4ad94-c404-4163-978d-c889a490a22b/sv-benchmarks/c/pthread-deagle/reorder_c11_good-40.i[30195,30208] [2022-11-25 18:47:24,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:47:24,098 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:47:24,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24 WrapperNode [2022-11-25 18:47:24,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:47:24,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:47:24,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:47:24,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:47:24,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,138 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2022-11-25 18:47:24,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:47:24,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:47:24,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:47:24,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:47:24,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:47:24,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:47:24,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:47:24,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:47:24,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (1/1) ... [2022-11-25 18:47:24,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:47:24,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:24,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:47:24,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:47:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:47:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-25 18:47:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-25 18:47:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:47:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:47:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:47:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:47:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:47:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-25 18:47:24,248 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-25 18:47:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:47:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:47:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:47:24,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:47:24,250 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:47:24,398 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:47:24,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:47:24,618 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:47:24,625 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:47:24,625 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 18:47:24,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:47:24 BoogieIcfgContainer [2022-11-25 18:47:24,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:47:24,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:47:24,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:47:24,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:47:24,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:47:23" (1/3) ... [2022-11-25 18:47:24,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b04877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:47:24, skipping insertion in model container [2022-11-25 18:47:24,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:24" (2/3) ... [2022-11-25 18:47:24,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b04877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:47:24, skipping insertion in model container [2022-11-25 18:47:24,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:47:24" (3/3) ... [2022-11-25 18:47:24,638 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-40.i [2022-11-25 18:47:24,648 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:47:24,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:47:24,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:47:24,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:47:24,719 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 18:47:24,769 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:24,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:47:24,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:24,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:47:24,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-25 18:47:24,822 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:47:24,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2022-11-25 18:47:24,841 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;@72b4724a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:24,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:47:24,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:47:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1384871672, now seen corresponding path program 1 times [2022-11-25 18:47:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:25,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595199998] [2022-11-25 18:47:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:25,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:47:25,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595199998] [2022-11-25 18:47:25,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595199998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:25,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:25,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:47:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857315642] [2022-11-25 18:47:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:25,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:47:25,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:25,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:47:25,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:47:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,310 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:25,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2022-11-25 18:47:25,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 18:47:25,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:47:25,486 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:47:25,488 INFO L307 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was SAFE (1/2) [2022-11-25 18:47:25,500 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:25,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:47:25,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:25,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:47:25,530 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:47:25,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-25 18:47:25,531 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;@72b4724a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:25,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:47:25,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-11-25 18:47:25,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash -27161840, now seen corresponding path program 1 times [2022-11-25 18:47:25,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:25,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860717115] [2022-11-25 18:47:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:25,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:47:25,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:25,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860717115] [2022-11-25 18:47:25,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860717115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:25,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:25,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:47:25,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687332170] [2022-11-25 18:47:25,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:25,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:47:25,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:25,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:47:25,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:47:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,687 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:25,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2022-11-25 18:47:25,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:47:25,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash 184189073, now seen corresponding path program 1 times [2022-11-25 18:47:25,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:25,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436864013] [2022-11-25 18:47:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:25,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:47:25,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:25,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436864013] [2022-11-25 18:47:25,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436864013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:25,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:25,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:47:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67850600] [2022-11-25 18:47:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:25,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:47:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:47:25,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:47:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,896 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:25,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-11-25 18:47:25,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:25,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:47:25,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:25,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:25,962 INFO L85 PathProgramCache]: Analyzing trace with hash -406014113, now seen corresponding path program 1 times [2022-11-25 18:47:25,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:25,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295619018] [2022-11-25 18:47:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:25,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:47:26,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:26,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295619018] [2022-11-25 18:47:26,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295619018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:47:26,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456564386] [2022-11-25 18:47:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:26,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:47:26,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:26,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:47:26,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:47:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:26,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:47:26,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:47:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:47:26,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:47:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:47:26,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456564386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:47:26,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:47:26,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 18:47:26,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743282152] [2022-11-25 18:47:26,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:47:26,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:47:26,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:26,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:47:26,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:47:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:26,640 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:26,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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) [2022-11-25 18:47:26,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:26,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:26,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:47:26,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 18:47:26,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:47:26,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:26,934 INFO L85 PathProgramCache]: Analyzing trace with hash 309755670, now seen corresponding path program 1 times [2022-11-25 18:47:26,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:26,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460234388] [2022-11-25 18:47:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:26,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:47:26,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:47:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:47:27,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:47:27,010 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:47:27,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-25 18:47:27,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-25 18:47:27,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:47:27,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 18:47:27,015 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2022-11-25 18:47:27,016 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:47:27,016 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 18:47:27,048 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-25 18:47:27,057 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:27,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:47:27,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:27,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:47:27,074 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:47:27,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of2ForFork1 ======== [2022-11-25 18:47:27,075 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;@72b4724a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:27,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:47:27,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-11-25 18:47:27,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:47:27,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1254997903, now seen corresponding path program 1 times [2022-11-25 18:47:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:27,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974436516] [2022-11-25 18:47:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:27,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:47:27,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:27,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974436516] [2022-11-25 18:47:27,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974436516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:27,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:27,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:47:27,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701967933] [2022-11-25 18:47:27,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:27,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:47:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:47:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:47:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:27,217 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:27,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2022-11-25 18:47:27,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:27,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 18:47:27,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:47:27,643 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:47:27,643 INFO L307 ceAbstractionStarter]: Result for error location checkThreadThread1of2ForFork1 was SAFE (1/3) [2022-11-25 18:47:27,650 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:27,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:47:27,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:27,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:47:27,670 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:47:27,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread2of2ForFork1 ======== [2022-11-25 18:47:27,671 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;@72b4724a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:27,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:47:27,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-11-25 18:47:27,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:47:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1940582466, now seen corresponding path program 1 times [2022-11-25 18:47:27,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:27,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233300155] [2022-11-25 18:47:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:27,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:47:27,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:27,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233300155] [2022-11-25 18:47:27,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233300155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:27,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:27,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:47:27,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585603823] [2022-11-25 18:47:27,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:27,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:47:27,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:27,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:47:27,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:47:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:27,776 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:27,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2022-11-25 18:47:27,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 18:47:29,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:47:29,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:47:29,391 INFO L307 ceAbstractionStarter]: Result for error location checkThreadThread2of2ForFork1 was SAFE (2/3) [2022-11-25 18:47:29,396 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:29,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:47:29,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:29,402 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:47:29,413 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:47:29,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-25 18:47:29,414 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;@72b4724a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:29,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:47:29,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-11-25 18:47:29,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:29,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1225907025, now seen corresponding path program 1 times [2022-11-25 18:47:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:29,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473911904] [2022-11-25 18:47:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:29,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:47:29,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:29,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473911904] [2022-11-25 18:47:29,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473911904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:29,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:29,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:47:29,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452999884] [2022-11-25 18:47:29,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:29,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:47:29,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:29,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:47:29,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:47:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,517 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:29,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2022-11-25 18:47:29,517 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:47:29,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:29,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:29,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1343579374, now seen corresponding path program 1 times [2022-11-25 18:47:29,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:29,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564483447] [2022-11-25 18:47:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:29,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:47:29,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:29,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564483447] [2022-11-25 18:47:29,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564483447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:29,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:29,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:47:29,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818607850] [2022-11-25 18:47:29,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:29,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:47:29,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:47:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:47:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,590 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:29,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-11-25 18:47:29,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:29,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:47:29,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:29,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash -286645753, now seen corresponding path program 1 times [2022-11-25 18:47:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:29,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378220815] [2022-11-25 18:47:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:47:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:29,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378220815] [2022-11-25 18:47:29,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378220815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:47:29,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79055039] [2022-11-25 18:47:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:47:29,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:29,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:47:29,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:47:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:29,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:47:29,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:47:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:47:30,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:47:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:47:30,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79055039] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:47:30,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:47:30,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 18:47:30,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182607657] [2022-11-25 18:47:30,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:47:30,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:47:30,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:30,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:47:30,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:47:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,066 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:30,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 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) [2022-11-25 18:47:30,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:30,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:47:30,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:47:30,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:47:30,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:30,354 INFO L85 PathProgramCache]: Analyzing trace with hash -243669243, now seen corresponding path program 1 times [2022-11-25 18:47:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:30,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366588542] [2022-11-25 18:47:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:47:30,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:47:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:47:30,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:47:30,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:47:30,419 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-25 18:47:30,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-25 18:47:30,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:47:30,423 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 18:47:30,423 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (3/3) [2022-11-25 18:47:30,424 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:47:30,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 18:47:30,467 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-25 18:47:30,469 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:30,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:47:30,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:30,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:47:30,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2022-11-25 18:47:30,477 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:47:30,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-25 18:47:30,478 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;@72b4724a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:30,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:47:30,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:30,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash 786644002, now seen corresponding path program 1 times [2022-11-25 18:47:30,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:30,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917004775] [2022-11-25 18:47:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:30,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:47:30,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:30,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917004775] [2022-11-25 18:47:30,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917004775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:30,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:30,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:47:30,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929921683] [2022-11-25 18:47:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:30,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:47:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:30,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:47:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:47:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,572 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:30,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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) [2022-11-25 18:47:30,572 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:47:30,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:30,580 INFO L85 PathProgramCache]: Analyzing trace with hash 778884643, now seen corresponding path program 1 times [2022-11-25 18:47:30,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:30,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801123269] [2022-11-25 18:47:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:30,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:47:30,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:30,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801123269] [2022-11-25 18:47:30,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801123269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:30,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:30,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:47:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763021918] [2022-11-25 18:47:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:30,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:47:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:47:30,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:47:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,630 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:30,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-11-25 18:47:30,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:30,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:47:30,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:30,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1805783532, now seen corresponding path program 1 times [2022-11-25 18:47:30,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:30,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131736089] [2022-11-25 18:47:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:30,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:47:30,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131736089] [2022-11-25 18:47:30,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131736089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:47:30,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614334493] [2022-11-25 18:47:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:30,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:47:30,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:30,822 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:47:30,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:47:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:30,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:47:30,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:47:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:47:30,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:47:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:47:31,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614334493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:47:31,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:47:31,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 18:47:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194937530] [2022-11-25 18:47:31,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:47:31,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:47:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:47:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:47:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:31,051 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:31,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2022-11-25 18:47:31,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:31,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:31,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:47:31,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-25 18:47:31,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:47:31,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:31,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1128251632, now seen corresponding path program 1 times [2022-11-25 18:47:31,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:31,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648255278] [2022-11-25 18:47:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:31,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-25 18:47:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:31,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648255278] [2022-11-25 18:47:31,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648255278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:47:31,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139797439] [2022-11-25 18:47:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:31,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:47:31,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:31,578 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:47:31,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:47:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:31,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:47:31,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:47:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:47:31,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:47:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:47:32,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139797439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:47:32,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:47:32,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-25 18:47:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830982669] [2022-11-25 18:47:32,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:47:32,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 18:47:32,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 18:47:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:47:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:32,068 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:32,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.789473684210526) internal successors, (186), 19 states have internal predecessors, (186), 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) [2022-11-25 18:47:32,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:32,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:32,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:47:32,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:47:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:47:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:47:32,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:47:32,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:47:32,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:47:32,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:32,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1972345414, now seen corresponding path program 1 times [2022-11-25 18:47:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:32,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453525696] [2022-11-25 18:47:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:32,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:47:32,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:47:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:47:32,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:47:32,454 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:47:32,455 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-25 18:47:32,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-25 18:47:32,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:47:32,457 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-25 18:47:32,459 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/4) [2022-11-25 18:47:32,460 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:47:32,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-25 18:47:32,500 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-25 18:47:32,503 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:32,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:47:32,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:47:32,507 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:47:32,517 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:47:32,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread4of4ForFork1 ======== [2022-11-25 18:47:32,518 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;@72b4724a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:47:32,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:47:32,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d4ad94-c404-4163-978d-c889a490a22b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2022-11-25 18:47:32,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:47:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:47:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1841446555, now seen corresponding path program 1 times [2022-11-25 18:47:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:47:32,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384565075] [2022-11-25 18:47:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:47:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:47:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:47:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:47:32,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:47:32,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384565075] [2022-11-25 18:47:32,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384565075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:47:32,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:47:32,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:47:32,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674368727] [2022-11-25 18:47:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:47:32,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:47:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:47:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:47:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:47:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:47:32,631 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:47:32,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2022-11-25 18:47:32,632 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.