./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-2.wvr.c --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_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S --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 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:09:11,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:09:11,614 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-24 22:09:11,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:09:11,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:09:11,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:09:11,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:09:11,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:09:11,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:09:11,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:09:11,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:09:11,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:09:11,652 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:09:11,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:09:11,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:09:11,654 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:09:11,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:09:11,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:09:11,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:09:11,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:09:11,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:09:11,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:09:11,659 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:09:11,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:09:11,660 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:09:11,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:09:11,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:09:11,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:09:11,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:09:11,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:09:11,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:09:11,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:09:11,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:09:11,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:09:11,664 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-24 22:09:11,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:09:11,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:09:11,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-24 22:09:11,666 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:09:11,666 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-24 22:09:11,666 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-24 22:09:11,667 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_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b [2023-11-24 22:09:11,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:09:12,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:09:12,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:09:12,030 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:09:12,030 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:09:12,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/../../sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2023-11-24 22:09:15,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:09:15,379 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:09:15,379 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2023-11-24 22:09:15,387 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/data/2c1d38fc7/05795c1ef507462e8ffeb2c529761a6b/FLAGeb60af343 [2023-11-24 22:09:15,409 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/data/2c1d38fc7/05795c1ef507462e8ffeb2c529761a6b [2023-11-24 22:09:15,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:09:15,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:09:15,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:09:15,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:09:15,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:09:15,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d68981f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15, skipping insertion in model container [2023-11-24 22:09:15,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,477 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:09:15,658 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_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c[2500,2513] [2023-11-24 22:09:15,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:09:15,679 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:09:15,701 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_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c[2500,2513] [2023-11-24 22:09:15,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:09:15,720 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:09:15,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15 WrapperNode [2023-11-24 22:09:15,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:09:15,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:09:15,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:09:15,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:09:15,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,768 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 146 [2023-11-24 22:09:15,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:09:15,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:09:15,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:09:15,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:09:15,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:09:15,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:09:15,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:09:15,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:09:15,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (1/1) ... [2023-11-24 22:09:15,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:09:15,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:15,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:15,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 22:09:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:09:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 22:09:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 22:09:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 22:09:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 22:09:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:09:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:09:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:09:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:09:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:09:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:09:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:09:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:09:15,936 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:09:16,043 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:09:16,044 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:09:16,392 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:09:16,767 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:09:16,767 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 22:09:16,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:09:16 BoogieIcfgContainer [2023-11-24 22:09:16,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:09:16,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:09:16,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:09:16,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:09:16,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:09:15" (1/3) ... [2023-11-24 22:09:16,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d06f624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:09:16, skipping insertion in model container [2023-11-24 22:09:16,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:09:15" (2/3) ... [2023-11-24 22:09:16,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d06f624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:09:16, skipping insertion in model container [2023-11-24 22:09:16,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:09:16" (3/3) ... [2023-11-24 22:09:16,780 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2023-11-24 22:09:16,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:09:16,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:09:16,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 22:09:16,802 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:09:16,867 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:09:16,919 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:16,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:16,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:16,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:16,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-24 22:09:17,007 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:17,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:17,034 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;@58f5dd99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:17,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 22:09:17,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:09:17,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash -701037702, now seen corresponding path program 1 times [2023-11-24 22:09:17,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:17,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091405558] [2023-11-24 22:09:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:17,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:09:17,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091405558] [2023-11-24 22:09:17,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091405558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:17,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:17,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179352735] [2023-11-24 22:09:17,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:17,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:09:17,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:09:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:09:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:17,791 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:17,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-11-24 22:09:17,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:09:17,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:09:17,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:09:17,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash -973005165, now seen corresponding path program 1 times [2023-11-24 22:09:17,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:17,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596752431] [2023-11-24 22:09:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:17,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:09:18,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596752431] [2023-11-24 22:09:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596752431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:09:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021342815] [2023-11-24 22:09:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:18,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:18,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:18,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:09:18,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 22:09:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:18,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-24 22:09:18,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:09:19,093 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 40 treesize of output 32 [2023-11-24 22:09:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:09:19,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:09:19,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:09:19,379 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 52 treesize of output 37 [2023-11-24 22:09:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:09:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021342815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:09:19,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:09:19,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2023-11-24 22:09:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507494221] [2023-11-24 22:09:19,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:09:19,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 22:09:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 22:09:19,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-24 22:09:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:19,580 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:19,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 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) [2023-11-24 22:09:19,580 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:09:19,580 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:09:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:09:19,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 22:09:20,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:20,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:09:20,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1766910902, now seen corresponding path program 1 times [2023-11-24 22:09:20,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:20,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162111495] [2023-11-24 22:09:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:20,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:21,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:21,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162111495] [2023-11-24 22:09:21,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162111495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:09:21,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340033605] [2023-11-24 22:09:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:21,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:21,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:21,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:09:21,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 22:09:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:21,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-24 22:09:21,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:09:21,888 INFO L349 Elim1Store]: treesize reduction 27, result has 52.6 percent of original size [2023-11-24 22:09:21,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 96 [2023-11-24 22:09:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:22,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:09:22,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:09:22,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 161 treesize of output 177 [2023-11-24 22:09:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340033605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:09:26,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:09:26,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 23 [2023-11-24 22:09:26,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253558661] [2023-11-24 22:09:26,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:09:26,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 22:09:26,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 22:09:26,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-11-24 22:09:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:26,872 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:26,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 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) [2023-11-24 22:09:26,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:09:26,873 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:09:26,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:09:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:09:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:27,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 22:09:27,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:27,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:09:27,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:27,481 INFO L85 PathProgramCache]: Analyzing trace with hash -107459075, now seen corresponding path program 2 times [2023-11-24 22:09:27,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:27,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915119690] [2023-11-24 22:09:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:27,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:29,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:29,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915119690] [2023-11-24 22:09:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915119690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:09:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106758299] [2023-11-24 22:09:29,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 22:09:29,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:29,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:29,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:09:29,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 22:09:29,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 22:09:29,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:09:29,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-24 22:09:29,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:09:29,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:09:29,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 71 [2023-11-24 22:09:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:09:30,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:09:30,467 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-11-24 22:09:30,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-11-24 22:09:30,575 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2023-11-24 22:09:30,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 61 [2023-11-24 22:09:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 22:09:30,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106758299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:09:30,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:09:30,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 28 [2023-11-24 22:09:30,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831247567] [2023-11-24 22:09:30,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:09:30,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-24 22:09:30,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:30,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-24 22:09:30,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-11-24 22:09:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:30,743 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:30,744 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:09:30,744 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:09:30,744 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:30,744 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:09:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:09:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:09:32,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 22:09:32,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:32,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:09:32,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2100193803, now seen corresponding path program 3 times [2023-11-24 22:09:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:32,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742601969] [2023-11-24 22:09:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:32,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:09:33,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:33,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742601969] [2023-11-24 22:09:33,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742601969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:09:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586118288] [2023-11-24 22:09:33,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 22:09:33,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:33,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:33,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:09:33,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d34b27c-5b3b-49dc-8877-f8c28ae8b0d3/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 22:09:33,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-24 22:09:33,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:09:33,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-24 22:09:33,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:09:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:09:33,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:09:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:09:34,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586118288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:09:34,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:09:34,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2023-11-24 22:09:34,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049799722] [2023-11-24 22:09:34,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:09:34,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 22:09:34,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 22:09:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-11-24 22:09:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:34,780 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:34,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 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) [2023-11-24 22:09:34,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:09:34,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:09:34,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:34,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:09:34,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:49,675 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 68 DAG size of output: 48 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-24 22:10:07,531 WARN L293 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 64 DAG size of output: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)