./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx --witnessprinter.witness.filename witness --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 d59c014df9ead169c56b7ae39b852ef0f17fdf8c183ee9a03f7bf209d03f772f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:21:36,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:21:36,776 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-12-02 20:21:36,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:21:36,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:21:36,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:21:36,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:21:36,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:21:36,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:21:36,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:21:36,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 20:21:36,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 20:21:36,809 INFO L153 SettingsManager]: * Use SBE=true [2023-12-02 20:21:36,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:21:36,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 20:21:36,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:21:36,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 20:21:36,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:21:36,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:21:36,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 20:21:36,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:21:36,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 20:21:36,816 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:21:36,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 20:21:36,817 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:21:36,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:21:36,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 20:21:36,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:21:36,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:21:36,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:21:36,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:21:36,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:21:36,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 20:21:36,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-02 20:21:36,821 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-12-02 20:21:36,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 20:21:36,821 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:21:36,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-12-02 20:21:36,822 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 20:21:36,822 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-12-02 20:21:36,822 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-12-02 20:21:36,822 INFO L153 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_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d59c014df9ead169c56b7ae39b852ef0f17fdf8c183ee9a03f7bf209d03f772f [2023-12-02 20:21:37,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:21:37,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:21:37,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:21:37,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:21:37,045 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:21:37,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i [2023-12-02 20:21:39,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:21:40,072 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:21:40,072 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i [2023-12-02 20:21:40,085 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/data/c802a2705/a5cdb00fcd3149fa8b64c123dc3597ac/FLAG73c401b47 [2023-12-02 20:21:40,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/data/c802a2705/a5cdb00fcd3149fa8b64c123dc3597ac [2023-12-02 20:21:40,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:21:40,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:21:40,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:21:40,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:21:40,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:21:40,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e748551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40, skipping insertion in model container [2023-12-02 20:21:40,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,156 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:21:40,428 WARN L240 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_322b8d57-a73f-4e35-9a88-f360ffda07e7/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i[31052,31065] [2023-12-02 20:21:40,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:21:40,447 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:21:40,488 WARN L240 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_322b8d57-a73f-4e35-9a88-f360ffda07e7/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i[31052,31065] [2023-12-02 20:21:40,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:21:40,527 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:21:40,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40 WrapperNode [2023-12-02 20:21:40,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:21:40,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:21:40,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:21:40,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:21:40,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,571 INFO L138 Inliner]: procedures = 165, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 86 [2023-12-02 20:21:40,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:21:40,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:21:40,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:21:40,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:21:40,582 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:21:40,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:21:40,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:21:40,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:21:40,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (1/1) ... [2023-12-02 20:21:40,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:21:40,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:21:40,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:21:40,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:21:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 20:21:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-02 20:21:40,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-02 20:21:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 20:21:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 20:21:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:21:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 20:21:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 20:21:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 20:21:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 20:21:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:21:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:21:40,674 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 20:21:40,840 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:21:40,842 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:21:41,005 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:21:41,118 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:21:41,119 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 20:21:41,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:21:41 BoogieIcfgContainer [2023-12-02 20:21:41,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:21:41,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:21:41,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:21:41,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:21:41,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:21:40" (1/3) ... [2023-12-02 20:21:41,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3298ecae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:21:41, skipping insertion in model container [2023-12-02 20:21:41,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:40" (2/3) ... [2023-12-02 20:21:41,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3298ecae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:21:41, skipping insertion in model container [2023-12-02 20:21:41,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:21:41" (3/3) ... [2023-12-02 20:21:41,128 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur-pthread.i [2023-12-02 20:21:41,137 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 20:21:41,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:21:41,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 20:21:41,149 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 20:21:41,186 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 20:21:41,230 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:21:41,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:21:41,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:21:41,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:21:41,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-12-02 20:21:41,263 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:21:41,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-12-02 20:21:41,278 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=LoopHeads, 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;@598e5256, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:21:41,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:21:41,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:21:41,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2065171011, now seen corresponding path program 1 times [2023-12-02 20:21:41,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:41,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742061449] [2023-12-02 20:21:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:41,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:41,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:41,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742061449] [2023-12-02 20:21:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742061449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:41,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:41,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:21:41,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2736329] [2023-12-02 20:21:41,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:21:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:41,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:21:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:21:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:41,836 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:41,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-12-02 20:21:41,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:42,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 20:21:42,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:21:42,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash -362059277, now seen corresponding path program 1 times [2023-12-02 20:21:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:42,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843494399] [2023-12-02 20:21:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:42,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:42,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:42,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843494399] [2023-12-02 20:21:42,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843494399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:42,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:42,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 20:21:42,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731445308] [2023-12-02 20:21:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:42,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:21:42,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:21:42,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:21:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:42,422 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:42,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2023-12-02 20:21:42,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:42,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:42,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 20:21:42,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:21:42,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash 9018922, now seen corresponding path program 2 times [2023-12-02 20:21:42,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:42,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550933799] [2023-12-02 20:21:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:42,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:42,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550933799] [2023-12-02 20:21:42,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550933799] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:21:42,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207747551] [2023-12-02 20:21:42,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 20:21:42,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:21:42,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:21:42,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:21:42,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 20:21:42,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 20:21:42,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:21:42,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 20:21:42,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:21:43,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 20:21:43,090 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 20:21:43,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 20:21:43,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:21:43,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 20:21:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:43,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:21:43,225 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_104 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_104) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|) 0))) is different from false [2023-12-02 20:21:43,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:21:43,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-12-02 20:21:43,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:21:43,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-12-02 20:21:43,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-02 20:21:43,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:21:43,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:21:43,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-12-02 20:21:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-02 20:21:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207747551] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:21:43,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:21:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-12-02 20:21:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699037801] [2023-12-02 20:21:43,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:21:43,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 20:21:43,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 20:21:43,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=146, Unknown=1, NotChecked=24, Total=210 [2023-12-02 20:21:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:43,530 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:43,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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) [2023-12-02 20:21:43,531 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:43,531 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:43,531 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:43,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 20:21:43,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 20:21:44,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:21:44,030 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-02 20:21:44,031 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2023-12-02 20:21:44,034 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:21:44,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:21:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:21:44,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:21:44,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2023-12-02 20:21:44,041 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:21:44,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-12-02 20:21:44,042 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=LoopHeads, 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;@598e5256, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:21:44,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:21:44,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:21:44,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash -354443456, now seen corresponding path program 1 times [2023-12-02 20:21:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:44,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084177961] [2023-12-02 20:21:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:44,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:44,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084177961] [2023-12-02 20:21:44,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084177961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:44,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:44,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:21:44,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016069108] [2023-12-02 20:21:44,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:44,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:21:44,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:44,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:21:44,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:21:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:44,219 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:44,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-12-02 20:21:44,219 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:21:44,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 20:21:44,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:21:44,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1898169708, now seen corresponding path program 1 times [2023-12-02 20:21:44,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:44,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183649517] [2023-12-02 20:21:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:44,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:44,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183649517] [2023-12-02 20:21:44,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183649517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:44,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 20:21:44,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354197918] [2023-12-02 20:21:44,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:44,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:21:44,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:21:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:21:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:44,475 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:44,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-12-02 20:21:44,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:21:44,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:21:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:44,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 20:21:44,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:21:44,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash 404208363, now seen corresponding path program 1 times [2023-12-02 20:21:44,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:44,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952070522] [2023-12-02 20:21:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:44,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:21:44,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 20:21:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:21:44,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-02 20:21:44,607 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 20:21:44,607 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-12-02 20:21:44,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 20:21:44,609 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 20:21:44,609 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2023-12-02 20:21:44,610 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 20:21:44,610 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-02 20:21:44,629 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 20:21:44,631 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:21:44,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:21:44,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:21:44,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:21:44,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2023-12-02 20:21:44,643 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:21:44,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-12-02 20:21:44,644 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=LoopHeads, 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;@598e5256, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:21:44,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:21:44,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:21:44,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1956610773, now seen corresponding path program 1 times [2023-12-02 20:21:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:44,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547911148] [2023-12-02 20:21:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 20:21:44,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:44,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547911148] [2023-12-02 20:21:44,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547911148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:44,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:44,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:21:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480910251] [2023-12-02 20:21:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:21:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:44,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:21:44,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:21:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:44,935 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:44,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2023-12-02 20:21:44,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:45,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 20:21:45,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:21:45,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:45,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2029175785, now seen corresponding path program 1 times [2023-12-02 20:21:45,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:45,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83332069] [2023-12-02 20:21:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:45,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 20:21:45,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:45,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83332069] [2023-12-02 20:21:45,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83332069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:45,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:45,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 20:21:45,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393293990] [2023-12-02 20:21:45,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:45,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:21:45,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:21:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:21:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:45,380 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:45,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-12-02 20:21:45,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:45,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:45,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 20:21:45,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:21:45,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:45,480 INFO L85 PathProgramCache]: Analyzing trace with hash 3652212, now seen corresponding path program 1 times [2023-12-02 20:21:45,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:45,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403737861] [2023-12-02 20:21:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:45,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:21:45,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 20:21:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:21:45,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-02 20:21:45,528 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 20:21:45,528 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-12-02 20:21:45,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 20:21:45,530 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 20:21:45,530 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2023-12-02 20:21:45,531 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 20:21:45,531 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-02 20:21:45,555 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 20:21:45,558 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:21:45,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:21:45,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:21:45,559 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:21:45,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2023-12-02 20:21:45,572 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:21:45,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2023-12-02 20:21:45,573 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=LoopHeads, 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;@598e5256, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:21:45,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:21:45,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:21:45,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:45,915 INFO L85 PathProgramCache]: Analyzing trace with hash -805126900, now seen corresponding path program 1 times [2023-12-02 20:21:45,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:45,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705422835] [2023-12-02 20:21:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:45,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 20:21:46,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:46,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705422835] [2023-12-02 20:21:46,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705422835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:46,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:46,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:21:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954896614] [2023-12-02 20:21:46,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:46,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:21:46,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:46,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:21:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:21:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:46,032 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:46,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-12-02 20:21:46,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:46,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 20:21:46,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:21:46,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1434241185, now seen corresponding path program 1 times [2023-12-02 20:21:46,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:46,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885616219] [2023-12-02 20:21:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:46,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 20:21:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885616219] [2023-12-02 20:21:46,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885616219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:46,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:46,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 20:21:46,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044765963] [2023-12-02 20:21:46,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:46,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:21:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:21:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:21:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:46,715 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:46,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:21:46,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:46,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:47,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 20:21:47,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:21:47,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1680698612, now seen corresponding path program 1 times [2023-12-02 20:21:47,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:47,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766395246] [2023-12-02 20:21:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:47,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 20:21:47,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:47,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766395246] [2023-12-02 20:21:47,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766395246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:21:47,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:21:47,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:21:47,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875596887] [2023-12-02 20:21:47,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:21:47,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:21:47,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:47,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:21:47,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:21:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:47,455 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:47,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2023-12-02 20:21:47,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:47,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:47,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:47,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 20:21:47,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:21:47,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash -957238482, now seen corresponding path program 2 times [2023-12-02 20:21:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:47,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057023216] [2023-12-02 20:21:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:47,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 20:21:48,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:48,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057023216] [2023-12-02 20:21:48,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057023216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:21:48,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078999311] [2023-12-02 20:21:48,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 20:21:48,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:21:48,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:21:48,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:21:48,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 20:21:48,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 20:21:48,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:21:48,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 20:21:48,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:21:48,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 20:21:48,670 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 20:21:48,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 20:21:48,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 20:21:48,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 20:21:48,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 20:21:48,916 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 20:21:48,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-12-02 20:21:48,997 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-12-02 20:21:48,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 32 [2023-12-02 20:21:49,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 20:21:49,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-02 20:21:49,168 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 20:21:49,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2023-12-02 20:21:49,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:21:49,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2023-12-02 20:21:49,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 20:21:49,527 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-12-02 20:21:49,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2023-12-02 20:21:49,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 20:21:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:49,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:21:49,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:21:49,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-12-02 20:21:49,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:21:49,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-12-02 20:21:49,849 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 20:21:49,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 118 [2023-12-02 20:21:49,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2023-12-02 20:21:49,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-02 20:21:50,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:21:50,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2023-12-02 20:21:50,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 102 [2023-12-02 20:21:50,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 20:21:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078999311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:21:51,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:21:51,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 16] total 41 [2023-12-02 20:21:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015337565] [2023-12-02 20:21:51,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:21:51,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-02 20:21:51,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-02 20:21:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1513, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 20:21:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:51,089 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:51,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9523809523809526) internal successors, (124), 41 states have internal predecessors, (124), 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) [2023-12-02 20:21:51,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:51,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:51,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:51,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-02 20:21:56,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 20:21:56,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 20:21:56,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:21:56,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:21:56,563 INFO L85 PathProgramCache]: Analyzing trace with hash -301693176, now seen corresponding path program 3 times [2023-12-02 20:21:56,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:21:56,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759518267] [2023-12-02 20:21:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:21:56,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:21:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:21:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:21:57,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:21:57,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759518267] [2023-12-02 20:21:57,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759518267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:21:57,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480421095] [2023-12-02 20:21:57,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 20:21:57,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:21:57,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:21:57,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:21:57,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 20:21:57,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 20:21:57,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:21:57,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 20:21:57,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:21:57,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 20:21:57,363 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 20:21:57,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 20:21:57,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 20:21:57,425 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 20:21:57,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-12-02 20:21:57,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:21:57,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 20:21:57,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-12-02 20:21:57,772 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-12-02 20:21:57,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-12-02 20:21:57,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2023-12-02 20:21:57,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-02 20:21:57,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-12-02 20:21:57,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 20:21:58,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-02 20:21:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 20:21:58,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:21:58,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:21:58,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 53 [2023-12-02 20:21:58,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 129 [2023-12-02 20:21:58,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2023-12-02 20:21:58,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:21:58,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 48 [2023-12-02 20:21:58,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-02 20:21:58,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:21:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 20:21:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480421095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:21:58,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:21:58,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 40 [2023-12-02 20:21:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354064968] [2023-12-02 20:21:58,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:21:58,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-02 20:21:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:21:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-02 20:21:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1429, Unknown=2, NotChecked=0, Total=1640 [2023-12-02 20:21:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:21:58,955 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:21:58,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.951219512195122) internal successors, (121), 40 states have internal predecessors, (121), 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) [2023-12-02 20:21:58,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:58,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:21:58,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:21:58,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 71 states. [2023-12-02 20:21:58,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:22:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:22:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:22:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:22:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-02 20:22:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-02 20:22:02,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 20:22:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 20:22:02,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:22:02,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:22:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash -980581390, now seen corresponding path program 4 times [2023-12-02 20:22:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:22:02,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980886530] [2023-12-02 20:22:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:22:02,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:22:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:22:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:22:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:22:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980886530] [2023-12-02 20:22:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980886530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:22:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851297982] [2023-12-02 20:22:03,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 20:22:03,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:22:03,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:22:03,095 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:22:03,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 20:22:03,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 20:22:03,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:22:03,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-02 20:22:03,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:22:03,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 20:22:03,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 20:22:03,353 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 20:22:03,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-12-02 20:22:03,413 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-12-02 20:22:03,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 32 [2023-12-02 20:22:03,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 20:22:03,617 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 20:22:03,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2023-12-02 20:22:03,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-02 20:22:03,736 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 20:22:03,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 31 [2023-12-02 20:22:03,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 31 [2023-12-02 20:22:03,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2023-12-02 20:22:03,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-12-02 20:22:03,953 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 20:22:03,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 20:22:03,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 20:22:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:22:04,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:22:04,098 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_thr1Thread3of3ForFork0_push_~#newTop~0#1.base| v_DerPreprocessor_5) |c_thr1Thread2of3ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread2of3ForFork0_push_~#newTop~0#1.offset|) 0))) is different from false [2023-12-02 20:22:07,685 WARN L854 $PredicateComparison]: unable to prove that (and (or (and (forall ((v_prenex_16 Int) (v_prenex_18 Int) (v_prenex_14 Int) (v_DerPreprocessor_7 (Array Int Int)) (v_prenex_17 (Array Int Int)) (v_prenex_19 Int) (v_prenex_15 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_DerPreprocessor_7))) (let ((.cse0 (select (store .cse1 |c_ULTIMATE.start_main_~#t~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#t~0#1.base|) |c_ULTIMATE.start_main_~#t~0#1.offset| v_prenex_14)) v_prenex_18)) (.cse2 (store |c_#valid| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_prenex_19))) (or (< 0 (+ (select .cse0 0) 1)) (not (= (select (select (store (store (store .cse1 v_prenex_18 (store .cse0 0 (+ c_~next_alloc_idx~0 2))) |c_ULTIMATE.start_main_~#t~0#1.base| v_prenex_17) v_prenex_16 v_prenex_15) v_prenex_18) 0) 0)) (not (= (select (store .cse2 v_prenex_18 1) v_prenex_16) 0)) (not (= (select .cse2 v_prenex_18) 0)) (< v_prenex_14 |c_#pthreadsForks|))))) (or (< c_~next_alloc_idx~0 63) (forall ((|v_ULTIMATE.start_main_#t~pre9#1_59| Int) (v_DerPreprocessor_5 (Array Int Int)) (|v_thr1Thread3of3ForFork0_push_~#newTop~0#1.base_19| Int) (v_DerPreprocessor_7 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (|v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20| Int) (v_ArrVal_812 Int)) (let ((.cse4 (store |c_#memory_int| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_DerPreprocessor_7)) (.cse3 (store |c_#valid| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_ArrVal_812))) (or (not (= (select .cse3 |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20|) 0)) (< 0 (+ (select (select (store .cse4 |c_ULTIMATE.start_main_~#t~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#t~0#1.base|) |c_ULTIMATE.start_main_~#t~0#1.offset| |v_ULTIMATE.start_main_#t~pre9#1_59|)) |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20|) 0) 1)) (< |v_ULTIMATE.start_main_#t~pre9#1_59| |c_#pthreadsForks|) (not (= 0 (select (select (store (store (store .cse4 |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20| v_DerPreprocessor_6) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_818) |v_thr1Thread3of3ForFork0_push_~#newTop~0#1.base_19| v_DerPreprocessor_5) |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20|) 0))) (not (= (select (store .cse3 |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20| 1) |v_thr1Thread3of3ForFork0_push_~#newTop~0#1.base_19|) 0))))))) (< 64 c_~next_alloc_idx~0)) (or (< c_~next_alloc_idx~0 65) (and (forall ((|v_ULTIMATE.start_main_#t~pre9#1_59| Int) (v_DerPreprocessor_5 (Array Int Int)) (|v_thr1Thread3of3ForFork0_push_~#newTop~0#1.base_19| Int) (v_DerPreprocessor_6 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (v_DerPreprocessor_8 (Array Int Int)) (|v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20| Int) (v_ArrVal_812 Int)) (let ((.cse6 (store |c_#memory_int| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_DerPreprocessor_8)) (.cse5 (store |c_#valid| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_ArrVal_812))) (or (not (= (select .cse5 |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20|) 0)) (< |v_ULTIMATE.start_main_#t~pre9#1_59| |c_#pthreadsForks|) (< 0 (+ (select (select (store .cse6 |c_ULTIMATE.start_main_~#t~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~#t~0#1.base|) |c_ULTIMATE.start_main_~#t~0#1.offset| |v_ULTIMATE.start_main_#t~pre9#1_59|)) |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20|) 0) 1)) (not (= (select (select (store (store (store .cse6 |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20| v_DerPreprocessor_6) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_818) |v_thr1Thread3of3ForFork0_push_~#newTop~0#1.base_19| v_DerPreprocessor_5) |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20|) 0) 0)) (not (= (select (store .cse5 |v_thr1Thread2of3ForFork0_push_~#newTop~0#1.base_20| 1) |v_thr1Thread3of3ForFork0_push_~#newTop~0#1.base_19|) 0))))) (forall ((v_prenex_21 (Array Int Int)) (v_prenex_22 Int) (v_prenex_25 Int) (v_prenex_24 Int) (v_DerPreprocessor_8 (Array Int Int)) (v_prenex_23 (Array Int Int)) (v_prenex_20 Int)) (let ((.cse9 (store |c_#memory_int| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_DerPreprocessor_8))) (let ((.cse8 (select (store .cse9 |c_ULTIMATE.start_main_~#t~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#t~0#1.base|) |c_ULTIMATE.start_main_~#t~0#1.offset| v_prenex_20)) v_prenex_24)) (.cse7 (store |c_#valid| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_prenex_25))) (or (< v_prenex_20 |c_#pthreadsForks|) (not (= (select (store .cse7 v_prenex_24 1) v_prenex_22) 0)) (< 0 (+ (select .cse8 0) 1)) (not (= (select (select (store (store (store .cse9 v_prenex_24 (store .cse8 0 c_~next_alloc_idx~0)) |c_ULTIMATE.start_main_~#t~0#1.base| v_prenex_23) v_prenex_22 v_prenex_21) v_prenex_24) 0) 0)) (not (= (select .cse7 v_prenex_24) 0))))))))) is different from false [2023-12-02 20:22:13,954 INFO L349 Elim1Store]: treesize reduction 120, result has 75.9 percent of original size [2023-12-02 20:22:13,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 1518 treesize of output 1759 [2023-12-02 20:22:14,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:22:14,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 1020 treesize of output 1266 [2023-12-02 20:22:14,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 862 treesize of output 856 [2023-12-02 20:22:14,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 876 treesize of output 870 [2023-12-02 20:22:15,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 870 treesize of output 868 [2023-12-02 20:22:15,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 868 treesize of output 866 [2023-12-02 20:22:15,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 866 treesize of output 862 [2023-12-02 20:22:15,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 882 treesize of output 876 [2023-12-02 20:22:15,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 876 treesize of output 872 [2023-12-02 20:22:15,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 872 treesize of output 870 [2023-12-02 20:22:15,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 870 treesize of output 866 [2023-12-02 20:22:15,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 866 treesize of output 864 [2023-12-02 20:22:16,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 864 treesize of output 862 [2023-12-02 20:22:16,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 882 treesize of output 876 [2023-12-02 20:22:16,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 876 treesize of output 868 [2023-12-02 20:22:16,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 868 treesize of output 864 [2023-12-02 20:22:22,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:23,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:23,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:24,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:24,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:25,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:25,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:34,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 20:22:34,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:35,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:22:35,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 20:35:28,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2023-12-02 20:35:28,219 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-02 20:35:28,220 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-02 20:35:28,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 20:35:28,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 20:35:28,421 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:495) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 60 more [2023-12-02 20:35:28,424 INFO L158 Benchmark]: Toolchain (without parser) took 828323.49ms. Allocated memory was 151.0MB in the beginning and 700.4MB in the end (delta: 549.5MB). Free memory was 112.0MB in the beginning and 576.6MB in the end (delta: -464.6MB). Peak memory consumption was 465.7MB. Max. memory is 16.1GB. [2023-12-02 20:35:28,425 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 55.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 20:35:28,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.72ms. Allocated memory is still 151.0MB. Free memory was 112.0MB in the beginning and 92.0MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 20:35:28,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.69ms. Allocated memory is still 151.0MB. Free memory was 92.0MB in the beginning and 89.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 20:35:28,426 INFO L158 Benchmark]: Boogie Preprocessor took 30.09ms. Allocated memory is still 151.0MB. Free memory was 89.9MB in the beginning and 88.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 20:35:28,426 INFO L158 Benchmark]: RCFGBuilder took 515.71ms. Allocated memory is still 151.0MB. Free memory was 88.2MB in the beginning and 104.2MB in the end (delta: -16.0MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-12-02 20:35:28,426 INFO L158 Benchmark]: TraceAbstraction took 827302.01ms. Allocated memory was 151.0MB in the beginning and 700.4MB in the end (delta: 549.5MB). Free memory was 103.7MB in the beginning and 576.6MB in the end (delta: -472.9MB). Peak memory consumption was 456.0MB. Max. memory is 16.1GB. [2023-12-02 20:35:28,428 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 55.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 425.72ms. Allocated memory is still 151.0MB. Free memory was 112.0MB in the beginning and 92.0MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.69ms. Allocated memory is still 151.0MB. Free memory was 92.0MB in the beginning and 89.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.09ms. Allocated memory is still 151.0MB. Free memory was 89.9MB in the beginning and 88.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 515.71ms. Allocated memory is still 151.0MB. Free memory was 88.2MB in the beginning and 104.2MB in the end (delta: -16.0MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 827302.01ms. Allocated memory was 151.0MB in the beginning and 700.4MB in the end (delta: 549.5MB). Free memory was 103.7MB in the beginning and 576.6MB in the end (delta: -472.9MB). Peak memory consumption was 456.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 573, independent: 441, independent conditional: 193, independent unconditional: 248, dependent: 128, dependent conditional: 106, dependent unconditional: 22, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 483, independent: 441, independent conditional: 193, independent unconditional: 248, dependent: 38, dependent conditional: 16, dependent unconditional: 22, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 483, independent: 441, independent conditional: 193, independent unconditional: 248, dependent: 38, dependent conditional: 16, dependent unconditional: 22, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 505, independent: 441, independent conditional: 5, independent unconditional: 436, dependent: 59, dependent conditional: 17, dependent unconditional: 42, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 505, independent: 441, independent conditional: 5, independent unconditional: 436, dependent: 59, dependent conditional: 12, dependent unconditional: 47, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 505, independent: 441, independent conditional: 5, independent unconditional: 436, dependent: 59, dependent conditional: 12, dependent unconditional: 47, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 243, independent: 211, independent conditional: 5, independent unconditional: 206, dependent: 31, dependent conditional: 9, dependent unconditional: 22, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 243, independent: 194, independent conditional: 0, independent unconditional: 194, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 49, independent: 17, independent conditional: 5, independent unconditional: 12, dependent: 31, dependent conditional: 9, dependent unconditional: 22, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 49, independent: 17, independent conditional: 5, independent unconditional: 12, dependent: 31, dependent conditional: 9, dependent unconditional: 22, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 291, independent: 100, independent conditional: 22, independent unconditional: 77, dependent: 178, dependent conditional: 85, dependent unconditional: 93, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Protected Queries: 0 ], Cache Queries: [ total: 505, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 28, dependent conditional: 3, dependent unconditional: 25, unknown: 247, unknown conditional: 14, unknown unconditional: 233] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 211, Positive conditional cache size: 5, Positive unconditional cache size: 206, Negative cache size: 31, Negative conditional cache size: 9, Negative unconditional cache size: 22, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1, Eliminated conditions: 5, Maximal queried relation: 2, Independence queries for same thread: 90 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.2s, Number of persistent set computation: 83, Number of trivial persistent sets: 67, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 271, independent: 248, independent conditional: 0, independent unconditional: 248, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 573, independent: 441, independent conditional: 193, independent unconditional: 248, dependent: 128, dependent conditional: 106, dependent unconditional: 22, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 483, independent: 441, independent conditional: 193, independent unconditional: 248, dependent: 38, dependent conditional: 16, dependent unconditional: 22, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 483, independent: 441, independent conditional: 193, independent unconditional: 248, dependent: 38, dependent conditional: 16, dependent unconditional: 22, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 505, independent: 441, independent conditional: 5, independent unconditional: 436, dependent: 59, dependent conditional: 17, dependent unconditional: 42, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 505, independent: 441, independent conditional: 5, independent unconditional: 436, dependent: 59, dependent conditional: 12, dependent unconditional: 47, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 505, independent: 441, independent conditional: 5, independent unconditional: 436, dependent: 59, dependent conditional: 12, dependent unconditional: 47, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 243, independent: 211, independent conditional: 5, independent unconditional: 206, dependent: 31, dependent conditional: 9, dependent unconditional: 22, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 243, independent: 194, independent conditional: 0, independent unconditional: 194, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 49, independent: 17, independent conditional: 5, independent unconditional: 12, dependent: 31, dependent conditional: 9, dependent unconditional: 22, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 49, independent: 17, independent conditional: 5, independent unconditional: 12, dependent: 31, dependent conditional: 9, dependent unconditional: 22, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 291, independent: 100, independent conditional: 22, independent unconditional: 77, dependent: 178, dependent conditional: 85, dependent unconditional: 93, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Protected Queries: 0 ], Cache Queries: [ total: 505, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 28, dependent conditional: 3, dependent unconditional: 25, unknown: 247, unknown conditional: 14, unknown unconditional: 233] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 211, Positive conditional cache size: 5, Positive unconditional cache size: 206, Negative cache size: 31, Negative conditional cache size: 9, Negative unconditional cache size: 22, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1, Eliminated conditions: 5, Maximal queried relation: 2, Independence queries for same thread: 90 - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 228, independent: 184, independent conditional: 48, independent unconditional: 136, dependent: 40, dependent conditional: 28, dependent unconditional: 12, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 213, independent: 184, independent conditional: 48, independent unconditional: 136, dependent: 25, dependent conditional: 13, dependent unconditional: 12, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 213, independent: 184, independent conditional: 48, independent unconditional: 136, dependent: 25, dependent conditional: 13, dependent unconditional: 12, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 227, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 39, dependent conditional: 14, dependent unconditional: 25, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 227, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 39, dependent conditional: 10, dependent unconditional: 29, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 227, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 39, dependent conditional: 10, dependent unconditional: 29, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 156, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 19, dependent conditional: 7, dependent unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 156, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 28, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 19, dependent conditional: 7, dependent unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 28, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 19, dependent conditional: 7, dependent unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 131, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 78, dependent conditional: 38, dependent unconditional: 40, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Protected Queries: 0 ], Cache Queries: [ total: 227, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 20, dependent conditional: 3, dependent unconditional: 17, unknown: 159, unknown conditional: 7, unknown unconditional: 152] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 136, Positive conditional cache size: 0, Positive unconditional cache size: 136, Negative cache size: 19, Negative conditional cache size: 7, Negative unconditional cache size: 12, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1, Eliminated conditions: 4, Maximal queried relation: 2, Independence queries for same thread: 15 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 25, Number of trivial persistent sets: 24, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 149, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 228, independent: 184, independent conditional: 48, independent unconditional: 136, dependent: 40, dependent conditional: 28, dependent unconditional: 12, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 213, independent: 184, independent conditional: 48, independent unconditional: 136, dependent: 25, dependent conditional: 13, dependent unconditional: 12, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 213, independent: 184, independent conditional: 48, independent unconditional: 136, dependent: 25, dependent conditional: 13, dependent unconditional: 12, unknown: 4, unknown conditional: 3, unknown unconditional: 1] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 227, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 39, dependent conditional: 14, dependent unconditional: 25, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 227, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 39, dependent conditional: 10, dependent unconditional: 29, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 227, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 39, dependent conditional: 10, dependent unconditional: 29, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 156, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 19, dependent conditional: 7, dependent unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 156, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 28, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 19, dependent conditional: 7, dependent unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 28, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 19, dependent conditional: 7, dependent unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 131, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 78, dependent conditional: 38, dependent unconditional: 40, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Protected Queries: 0 ], Cache Queries: [ total: 227, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 20, dependent conditional: 3, dependent unconditional: 17, unknown: 159, unknown conditional: 7, unknown unconditional: 152] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 136, Positive conditional cache size: 0, Positive unconditional cache size: 136, Negative cache size: 19, Negative conditional cache size: 7, Negative unconditional cache size: 12, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1, Eliminated conditions: 4, Maximal queried relation: 2, Independence queries for same thread: 15 - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1210, independent: 1032, independent conditional: 239, independent unconditional: 793, dependent: 178, dependent conditional: 129, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1148, independent: 1032, independent conditional: 239, independent unconditional: 793, dependent: 116, dependent conditional: 67, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1148, independent: 1032, independent conditional: 239, independent unconditional: 793, dependent: 116, dependent conditional: 67, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1212, independent: 1032, independent conditional: 0, independent unconditional: 1032, dependent: 180, dependent conditional: 64, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1212, independent: 1032, independent conditional: 0, independent unconditional: 1032, dependent: 180, dependent conditional: 23, dependent unconditional: 157, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1212, independent: 1032, independent conditional: 0, independent unconditional: 1032, dependent: 180, dependent conditional: 23, dependent unconditional: 157, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 834, independent: 770, independent conditional: 0, independent unconditional: 770, dependent: 64, dependent conditional: 15, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 834, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 96, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 64, dependent conditional: 15, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 96, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 64, dependent conditional: 15, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 287, independent: 73, independent conditional: 0, independent unconditional: 73, dependent: 214, dependent conditional: 66, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 1212, independent: 262, independent conditional: 0, independent unconditional: 262, dependent: 116, dependent conditional: 8, dependent unconditional: 108, unknown: 834, unknown conditional: 15, unknown unconditional: 819] , Statistics on independence cache: Total cache size (in pairs): 834, Positive cache size: 770, Positive conditional cache size: 0, Positive unconditional cache size: 770, Negative cache size: 64, Negative conditional cache size: 15, Negative unconditional cache size: 49, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 41, Maximal queried relation: 2, Independence queries for same thread: 62 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.2s, Number of persistent set computation: 80, Number of trivial persistent sets: 75, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 842, independent: 793, independent conditional: 0, independent unconditional: 793, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1210, independent: 1032, independent conditional: 239, independent unconditional: 793, dependent: 178, dependent conditional: 129, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1148, independent: 1032, independent conditional: 239, independent unconditional: 793, dependent: 116, dependent conditional: 67, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1148, independent: 1032, independent conditional: 239, independent unconditional: 793, dependent: 116, dependent conditional: 67, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1212, independent: 1032, independent conditional: 0, independent unconditional: 1032, dependent: 180, dependent conditional: 64, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1212, independent: 1032, independent conditional: 0, independent unconditional: 1032, dependent: 180, dependent conditional: 23, dependent unconditional: 157, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1212, independent: 1032, independent conditional: 0, independent unconditional: 1032, dependent: 180, dependent conditional: 23, dependent unconditional: 157, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 834, independent: 770, independent conditional: 0, independent unconditional: 770, dependent: 64, dependent conditional: 15, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 834, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 96, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 64, dependent conditional: 15, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 96, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 64, dependent conditional: 15, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 287, independent: 73, independent conditional: 0, independent unconditional: 73, dependent: 214, dependent conditional: 66, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 1212, independent: 262, independent conditional: 0, independent unconditional: 262, dependent: 116, dependent conditional: 8, dependent unconditional: 108, unknown: 834, unknown conditional: 15, unknown unconditional: 819] , Statistics on independence cache: Total cache size (in pairs): 834, Positive cache size: 770, Positive conditional cache size: 0, Positive unconditional cache size: 770, Negative cache size: 64, Negative conditional cache size: 15, Negative unconditional cache size: 49, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 41, Maximal queried relation: 2, Independence queries for same thread: 62 - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-02 20:35:28,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Forceful destruction successful, exit code 0 [2023-12-02 20:35:28,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Ended with exit code 0 [2023-12-02 20:35:28,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Ended with exit code 0 [2023-12-02 20:35:29,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx --witnessprinter.witness.filename witness --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 d59c014df9ead169c56b7ae39b852ef0f17fdf8c183ee9a03f7bf209d03f772f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:35:30,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:35:30,980 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2023-12-02 20:35:30,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:35:30,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:35:31,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:35:31,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:35:31,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:35:31,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:35:31,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:35:31,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 20:35:31,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 20:35:31,020 INFO L153 SettingsManager]: * Use SBE=true [2023-12-02 20:35:31,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:35:31,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 20:35:31,022 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:35:31,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:35:31,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:35:31,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 20:35:31,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:35:31,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 20:35:31,025 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 20:35:31,025 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 20:35:31,026 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:35:31,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 20:35:31,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:35:31,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:35:31,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 20:35:31,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:35:31,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:35:31,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:35:31,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:35:31,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:35:31,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 20:35:31,030 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-02 20:35:31,031 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-12-02 20:35:31,031 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 20:35:31,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:35:31,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-12-02 20:35:31,032 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 20:35:31,032 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-12-02 20:35:31,032 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-12-02 20:35:31,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 20:35:31,033 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d59c014df9ead169c56b7ae39b852ef0f17fdf8c183ee9a03f7bf209d03f772f [2023-12-02 20:35:31,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:35:31,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:35:31,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:35:31,342 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:35:31,342 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:35:31,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i [2023-12-02 20:35:34,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:35:34,364 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:35:34,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i [2023-12-02 20:35:34,378 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/data/d277cf907/7b85b9015b2d4803a4fb6fed98abd7ca/FLAGfedd4de05 [2023-12-02 20:35:34,390 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/data/d277cf907/7b85b9015b2d4803a4fb6fed98abd7ca [2023-12-02 20:35:34,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:35:34,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:35:34,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:35:34,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:35:34,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:35:34,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e24790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34, skipping insertion in model container [2023-12-02 20:35:34,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,454 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:35:34,760 WARN L240 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_322b8d57-a73f-4e35-9a88-f360ffda07e7/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i[31052,31065] [2023-12-02 20:35:34,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:35:34,787 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:35:34,826 WARN L240 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_322b8d57-a73f-4e35-9a88-f360ffda07e7/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i[31052,31065] [2023-12-02 20:35:34,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:35:34,875 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:35:34,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34 WrapperNode [2023-12-02 20:35:34,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:35:34,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:35:34,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:35:34,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:35:34,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,926 INFO L138 Inliner]: procedures = 169, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 87 [2023-12-02 20:35:34,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:35:34,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:35:34,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:35:34,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:35:34,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:35:34,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:35:34,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:35:34,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:35:34,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (1/1) ... [2023-12-02 20:35:34,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:35:34,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:35:34,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:35:35,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:35:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 20:35:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-02 20:35:35,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-02 20:35:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 20:35:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:35:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 20:35:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 20:35:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 20:35:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 20:35:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 20:35:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 20:35:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:35:35,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:35:35,031 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 20:35:35,180 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:35:35,182 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:35:35,370 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:35:35,508 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:35:35,508 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 20:35:35,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:35:35 BoogieIcfgContainer [2023-12-02 20:35:35,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:35:35,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:35:35,512 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:35:35,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:35:35,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:35:34" (1/3) ... [2023-12-02 20:35:35,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac5e199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:35:35, skipping insertion in model container [2023-12-02 20:35:35,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:35:34" (2/3) ... [2023-12-02 20:35:35,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac5e199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:35:35, skipping insertion in model container [2023-12-02 20:35:35,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:35:35" (3/3) ... [2023-12-02 20:35:35,518 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur-pthread.i [2023-12-02 20:35:35,526 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 20:35:35,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:35:35,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 20:35:35,537 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 20:35:35,577 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 20:35:35,617 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:35:35,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:35:35,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:35:35,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:35:35,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-12-02 20:35:35,659 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:35:35,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-12-02 20:35:35,678 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=LoopHeads, 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;@1c16557f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:35:35,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:35:36,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:35:36,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1314504701, now seen corresponding path program 1 times [2023-12-02 20:35:36,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:36,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648617288] [2023-12-02 20:35:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:36,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:36,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:36,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:36,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 20:35:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:36,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 20:35:36,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:36,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:35:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:35:36,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:35:36,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:36,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648617288] [2023-12-02 20:35:36,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648617288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:35:36,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:35:36,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:35:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743158825] [2023-12-02 20:35:36,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:35:36,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:35:36,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:35:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:35:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:36,481 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:36,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-12-02 20:35:36,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:36,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-02 20:35:36,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:36,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:35:36,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:36,941 INFO L85 PathProgramCache]: Analyzing trace with hash 137891533, now seen corresponding path program 1 times [2023-12-02 20:35:36,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:36,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951389462] [2023-12-02 20:35:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:36,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:36,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:36,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:36,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 20:35:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:37,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 20:35:37,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:37,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-02 20:35:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:35:37,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:35:37,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:37,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951389462] [2023-12-02 20:35:37,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951389462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:35:37,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:35:37,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:35:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344072767] [2023-12-02 20:35:37,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:35:37,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:35:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:37,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:35:37,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:35:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:37,091 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:37,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-12-02 20:35:37,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:37,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:35:37,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 20:35:37,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:37,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:35:37,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1699750892, now seen corresponding path program 2 times [2023-12-02 20:35:37,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:37,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846102498] [2023-12-02 20:35:37,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 20:35:37,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:37,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:37,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:37,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 20:35:37,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 20:35:37,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:35:37,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 20:35:37,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:37,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 20:35:37,560 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 20:35:37,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 20:35:37,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:35:37,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 20:35:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:35:37,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:35:37,726 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_88 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_88) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|)))) is different from false [2023-12-02 20:35:37,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:35:37,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 57 [2023-12-02 20:35:37,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:35:37,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-12-02 20:35:37,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2023-12-02 20:35:37,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:35:37,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-02 20:35:37,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-02 20:35:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-02 20:35:38,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:38,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846102498] [2023-12-02 20:35:38,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846102498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:35:38,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:35:38,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 20:35:38,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339266431] [2023-12-02 20:35:38,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 20:35:38,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 20:35:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 20:35:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=86, Unknown=1, NotChecked=18, Total=132 [2023-12-02 20:35:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:38,147 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:38,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 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) [2023-12-02 20:35:38,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:38,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:35:38,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:35:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:35:38,627 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 20:35:38,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 20:35:38,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:38,833 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-02 20:35:38,834 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2023-12-02 20:35:38,836 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:35:38,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:35:38,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:35:38,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:35:38,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2023-12-02 20:35:38,841 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:35:38,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-12-02 20:35:38,842 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=LoopHeads, 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;@1c16557f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:35:38,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:35:39,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:35:39,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash 518640064, now seen corresponding path program 1 times [2023-12-02 20:35:39,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:39,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870462731] [2023-12-02 20:35:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:39,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:39,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:39,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:39,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 20:35:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:39,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 20:35:39,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:39,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:35:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:35:39,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:35:39,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870462731] [2023-12-02 20:35:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870462731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:35:39,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:35:39,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:35:39,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557157397] [2023-12-02 20:35:39,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:35:39,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:35:39,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:39,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:35:39,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:35:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:39,308 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:39,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-12-02 20:35:39,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:39,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 20:35:39,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:39,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:35:39,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1101012242, now seen corresponding path program 1 times [2023-12-02 20:35:39,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313007863] [2023-12-02 20:35:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:39,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:39,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:39,677 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:39,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 20:35:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:39,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 20:35:39,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:39,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-02 20:35:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:35:39,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:35:39,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:39,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313007863] [2023-12-02 20:35:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313007863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:35:39,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:35:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:35:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142483690] [2023-12-02 20:35:39,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:35:39,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:35:39,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:35:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:35:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:39,796 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:39,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-12-02 20:35:39,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:39,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:35:39,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 20:35:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:40,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:35:40,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:40,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2094940333, now seen corresponding path program 1 times [2023-12-02 20:35:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:40,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820159025] [2023-12-02 20:35:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:40,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:40,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:40,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:40,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 20:35:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:35:40,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 20:35:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:35:40,241 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-12-02 20:35:40,242 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 20:35:40,242 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-12-02 20:35:40,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 20:35:40,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:40,444 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 20:35:40,445 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2023-12-02 20:35:40,445 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 20:35:40,445 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-02 20:35:40,468 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 20:35:40,470 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:35:40,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:35:40,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:35:40,472 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:35:40,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2023-12-02 20:35:40,477 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:35:40,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-12-02 20:35:40,479 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=LoopHeads, 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;@1c16557f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:35:40,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:35:40,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:35:40,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1275094867, now seen corresponding path program 1 times [2023-12-02 20:35:40,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:40,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290175342] [2023-12-02 20:35:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:40,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:40,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:40,937 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:40,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 20:35:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:41,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 20:35:41,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:41,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:35:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 20:35:41,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:35:41,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290175342] [2023-12-02 20:35:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290175342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:35:41,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:35:41,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:35:41,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34078833] [2023-12-02 20:35:41,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:35:41,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:35:41,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:35:41,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:35:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:41,127 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:41,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-12-02 20:35:41,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:41,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 20:35:41,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:41,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:35:41,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash -375799456, now seen corresponding path program 1 times [2023-12-02 20:35:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508182976] [2023-12-02 20:35:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:41,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:41,655 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:41,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 20:35:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:41,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 20:35:41,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:41,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-02 20:35:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 20:35:41,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:35:41,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:41,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508182976] [2023-12-02 20:35:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508182976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:35:41,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:35:41,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:35:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774803117] [2023-12-02 20:35:41,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:35:41,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:35:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:35:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:35:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:41,797 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:41,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2023-12-02 20:35:41,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:41,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:35:41,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 20:35:42,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:42,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 20:35:42,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1704656694, now seen corresponding path program 1 times [2023-12-02 20:35:42,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432158492] [2023-12-02 20:35:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:42,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:42,103 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:42,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 20:35:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:35:42,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 20:35:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:35:42,308 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-12-02 20:35:42,308 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 20:35:42,308 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-12-02 20:35:42,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 20:35:42,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:42,510 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 20:35:42,510 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2023-12-02 20:35:42,510 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 20:35:42,510 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-02 20:35:42,538 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 20:35:42,540 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:35:42,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:35:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:35:42,542 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:35:42,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Waiting until timeout for monitored process [2023-12-02 20:35:42,545 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:35:42,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2023-12-02 20:35:42,546 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=LoopHeads, 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;@1c16557f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:35:42,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:35:43,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:35:43,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1070822284, now seen corresponding path program 1 times [2023-12-02 20:35:43,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958523187] [2023-12-02 20:35:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:43,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:43,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:43,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:43,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 20:35:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:43,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 20:35:43,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:43,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:35:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 20:35:43,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:35:43,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:43,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958523187] [2023-12-02 20:35:43,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958523187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:35:43,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:35:43,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:35:43,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217746556] [2023-12-02 20:35:43,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:35:43,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:35:43,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:35:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:35:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:43,466 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:43,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-02 20:35:43,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:43,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:43,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 20:35:43,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:43,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:35:43,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash 697132705, now seen corresponding path program 1 times [2023-12-02 20:35:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787698888] [2023-12-02 20:35:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:43,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:43,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:43,952 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:43,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 20:35:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:44,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 20:35:44,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:44,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-02 20:35:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 20:35:44,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:35:44,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-02 20:35:44,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787698888] [2023-12-02 20:35:44,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787698888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:35:44,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:35:44,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:35:44,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070113428] [2023-12-02 20:35:44,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:35:44,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:35:44,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-02 20:35:44,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:35:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:35:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:44,109 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:35:44,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:35:44,109 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:44,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:35:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:35:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:35:45,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 20:35:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:45,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:35:45,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:35:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1069230220, now seen corresponding path program 1 times [2023-12-02 20:35:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-02 20:35:45,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410566635] [2023-12-02 20:35:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:35:45,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 20:35:45,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat [2023-12-02 20:35:45,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 20:35:45,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322b8d57-a73f-4e35-9a88-f360ffda07e7/bin/ugemcutter-verify-Bi2udmvEmx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 20:35:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:35:45,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 20:35:45,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:35:45,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 20:35:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:35:45,773 INFO L327 TraceCheckSpWp]: Computing backward predicates...