./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:56,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:57,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:13:57,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:57,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:57,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:57,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:57,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:57,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:57,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:57,134 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:57,135 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:57,135 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:57,137 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:57,138 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:57,138 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:57,138 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:57,139 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:57,139 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:57,140 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:57,142 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:57,143 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:57,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:13:57,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:13:57,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:57,145 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:13:57,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:57,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:13:57,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:57,147 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:13:57,148 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:13:57,149 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:13:57,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:57,149 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:13:57,149 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:13:57,150 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:13:57,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:57,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:57,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:57,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:57,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:57,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:57,153 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:57,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:57,154 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:57,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:57,155 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 [2023-11-12 00:13:57,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:57,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:57,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:57,443 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:57,445 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:57,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-12 00:14:00,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:14:01,040 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:14:01,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-12 00:14:01,070 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/data/7147acf24/bb5dfb543ed94c5890c4fa684eb91666/FLAGdc985ccc9 [2023-11-12 00:14:01,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/data/7147acf24/bb5dfb543ed94c5890c4fa684eb91666 [2023-11-12 00:14:01,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:14:01,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:14:01,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:01,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:14:01,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:14:01,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b121842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01, skipping insertion in model container [2023-11-12 00:14:01,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,160 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:14:01,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:01,490 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:14:01,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:01,590 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:14:01,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01 WrapperNode [2023-11-12 00:14:01,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:01,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:01,593 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:14:01,593 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:14:01,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,669 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-12 00:14:01,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:01,670 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:14:01,670 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:14:01,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:14:01,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:14:01,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:14:01,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:14:01,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:14:01,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2023-11-12 00:14:01,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:01,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:01,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:14:01,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:14:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:14:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:14:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 00:14:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:14:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:14:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 00:14:01,804 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 00:14:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:14:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:14:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:14:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:14:01,807 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:14:01,935 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:14:01,937 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:14:02,113 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:14:02,121 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:14:02,121 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:14:02,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:02 BoogieIcfgContainer [2023-11-12 00:14:02,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:14:02,147 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:14:02,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:14:02,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:14:02,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:01" (1/3) ... [2023-11-12 00:14:02,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a43197a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:02, skipping insertion in model container [2023-11-12 00:14:02,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (2/3) ... [2023-11-12 00:14:02,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a43197a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:02, skipping insertion in model container [2023-11-12 00:14:02,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:02" (3/3) ... [2023-11-12 00:14:02,164 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_neg.i [2023-11-12 00:14:02,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:14:02,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 00:14:02,186 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:14:02,261 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 00:14:02,295 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:14:02,310 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 74 transitions, 155 flow [2023-11-12 00:14:02,313 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 74 transitions, 155 flow [2023-11-12 00:14:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 155 flow [2023-11-12 00:14:02,356 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-12 00:14:02,356 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 00:14:02,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 3/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-12 00:14:02,362 INFO L119 LiptonReduction]: Number of co-enabled transitions 480 [2023-11-12 00:14:05,614 INFO L134 LiptonReduction]: Checked pairs total: 818 [2023-11-12 00:14:05,614 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-11-12 00:14:05,624 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 16 transitions, 39 flow [2023-11-12 00:14:05,637 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 25 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) [2023-11-12 00:14:05,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:14:05,666 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@387c9ce5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:14:05,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 00:14:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 25 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) [2023-11-12 00:14:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 00:14:05,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:05,676 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 00:14:05,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 00:14:05,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 304, now seen corresponding path program 1 times [2023-11-12 00:14:05,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:05,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672544092] [2023-11-12 00:14:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:05,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:05,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:05,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672544092] [2023-11-12 00:14:05,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672544092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:05,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:05,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 00:14:05,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178977879] [2023-11-12 00:14:05,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:05,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:14:05,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:05,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:14:05,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:14:05,843 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 25 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-12 00:14:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:05,886 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2023-11-12 00:14:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:14:05,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2023-11-12 00:14:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:05,898 INFO L225 Difference]: With dead ends: 24 [2023-11-12 00:14:05,898 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:14:05,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:14:05,903 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:05,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:14:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:14:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-12 00:14:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 23 states have internal predecessors, (35), 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) [2023-11-12 00:14:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2023-11-12 00:14:05,938 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 1 [2023-11-12 00:14:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:05,939 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2023-11-12 00:14:05,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-12 00:14:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2023-11-12 00:14:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:14:05,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:05,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:14:05,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:14:05,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 00:14:05,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash 297405, now seen corresponding path program 1 times [2023-11-12 00:14:05,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904864067] [2023-11-12 00:14:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:05,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:14:05,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:14:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:14:06,038 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:14:06,038 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:14:06,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-12 00:14:06,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-12 00:14:06,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-12 00:14:06,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-12 00:14:06,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-12 00:14:06,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-12 00:14:06,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-12 00:14:06,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-11-12 00:14:06,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:14:06,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:14:06,054 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 00:14:06,055 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:14:06,068 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated [2023-11-12 00:14:06,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:14:06 BasicIcfg [2023-11-12 00:14:06,075 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:14:06,076 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:14:06,076 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:14:06,076 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:14:06,077 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:02" (3/4) ... [2023-11-12 00:14:06,079 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:14:06,080 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:14:06,081 INFO L158 Benchmark]: Toolchain (without parser) took 4987.25ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 124.9MB in the beginning and 118.8MB in the end (delta: 6.2MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2023-11-12 00:14:06,081 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:14:06,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.48ms. Allocated memory is still 165.7MB. Free memory was 124.9MB in the beginning and 106.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 00:14:06,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.32ms. Allocated memory is still 165.7MB. Free memory was 105.7MB in the beginning and 104.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:14:06,083 INFO L158 Benchmark]: Boogie Preprocessor took 55.21ms. Allocated memory is still 165.7MB. Free memory was 104.0MB in the beginning and 102.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:14:06,084 INFO L158 Benchmark]: RCFGBuilder took 398.48ms. Allocated memory is still 165.7MB. Free memory was 102.4MB in the beginning and 89.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:14:06,084 INFO L158 Benchmark]: TraceAbstraction took 3927.67ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 137.8MB in the beginning and 118.8MB in the end (delta: 19.0MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2023-11-12 00:14:06,085 INFO L158 Benchmark]: Witness Printer took 4.53ms. Allocated memory is still 216.0MB. Free memory is still 118.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:14:06,087 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.48ms. Allocated memory is still 165.7MB. Free memory was 124.9MB in the beginning and 106.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.32ms. Allocated memory is still 165.7MB. Free memory was 105.7MB in the beginning and 104.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.21ms. Allocated memory is still 165.7MB. Free memory was 104.0MB in the beginning and 102.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 398.48ms. Allocated memory is still 165.7MB. Free memory was 102.4MB in the beginning and 89.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3927.67ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 137.8MB in the beginning and 118.8MB in the end (delta: 19.0MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. * Witness Printer took 4.53ms. Allocated memory is still 216.0MB. Free memory is still 118.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 75 PlacesBefore, 19 PlacesAfterwards, 74 TransitionsBefore, 16 TransitionsAfterwards, 480 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 818 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 631, independent: 581, independent conditional: 0, independent unconditional: 581, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 407, independent: 388, independent conditional: 0, independent unconditional: 388, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 407, independent: 378, independent conditional: 0, independent unconditional: 378, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 145, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 631, independent: 193, independent conditional: 0, independent unconditional: 193, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 407, unknown conditional: 0, unknown unconditional: 407] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(!(t == 1)) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_18-first-reads_unknown_2_neg.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [glob1=1, mutex1={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 101 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 00:14:06,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] 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_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:14:08,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:14:08,894 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:14:08,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:14:08,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:14:08,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:14:08,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:14:08,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:14:08,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:14:08,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:14:08,954 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:14:08,954 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:14:08,955 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:14:08,957 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:14:08,957 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:14:08,957 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:14:08,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:14:08,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:14:08,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:14:08,960 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:14:08,961 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:14:08,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:14:08,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:14:08,962 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:14:08,963 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:14:08,963 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:14:08,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:14:08,964 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:14:08,964 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:14:08,965 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:14:08,966 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:14:08,966 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:14:08,967 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:14:08,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:14:08,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:14:08,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:14:08,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:08,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:14:08,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:14:08,969 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:14:08,970 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:14:08,970 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:14:08,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:14:08,970 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_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 [2023-11-12 00:14:09,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:14:09,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:14:09,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:14:09,359 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:14:09,359 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:14:09,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-12 00:14:12,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:14:12,914 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:14:12,915 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-12 00:14:12,932 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/data/71026741b/c5fb1321c1c74f7e968bf2d656a2334d/FLAGc127e9a09 [2023-11-12 00:14:12,951 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/data/71026741b/c5fb1321c1c74f7e968bf2d656a2334d [2023-11-12 00:14:12,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:14:12,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:14:12,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:12,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:14:12,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:14:12,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:12" (1/1) ... [2023-11-12 00:14:12,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6d704f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:12, skipping insertion in model container [2023-11-12 00:14:12,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:12" (1/1) ... [2023-11-12 00:14:13,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:14:13,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:13,342 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:14:13,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:13,444 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:14:13,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13 WrapperNode [2023-11-12 00:14:13,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:13,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:13,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:14:13,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:14:13,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,522 INFO L138 Inliner]: procedures = 167, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-12 00:14:13,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:13,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:14:13,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:14:13,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:14:13,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:14:13,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:14:13,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:14:13,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:14:13,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (1/1) ... [2023-11-12 00:14:13,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:13,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:14:13,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:14:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:14:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 00:14:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:14:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:14:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 00:14:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 00:14:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:14:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:14:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:14:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-12 00:14:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:14:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:14:13,680 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:14:13,863 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:14:13,865 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:14:14,058 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:14:14,066 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:14:14,066 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:14:14,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:14 BoogieIcfgContainer [2023-11-12 00:14:14,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:14:14,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:14:14,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:14:14,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:14:14,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:12" (1/3) ... [2023-11-12 00:14:14,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c6eb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:14, skipping insertion in model container [2023-11-12 00:14:14,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:13" (2/3) ... [2023-11-12 00:14:14,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c6eb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:14, skipping insertion in model container [2023-11-12 00:14:14,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:14" (3/3) ... [2023-11-12 00:14:14,078 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_neg.i [2023-11-12 00:14:14,107 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:14:14,107 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 00:14:14,107 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:14:14,188 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 00:14:14,229 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:14:14,244 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 74 transitions, 155 flow [2023-11-12 00:14:14,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 74 transitions, 155 flow [2023-11-12 00:14:14,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 155 flow [2023-11-12 00:14:14,293 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-12 00:14:14,293 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 00:14:14,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 3/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-12 00:14:14,299 INFO L119 LiptonReduction]: Number of co-enabled transitions 464 [2023-11-12 00:14:20,654 INFO L134 LiptonReduction]: Checked pairs total: 803 [2023-11-12 00:14:20,654 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-11-12 00:14:20,679 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 15 transitions, 37 flow [2023-11-12 00:14:20,695 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 25 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) [2023-11-12 00:14:20,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:14:20,729 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@45492c08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:14:20,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 00:14:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 25 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) [2023-11-12 00:14:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 00:14:20,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:20,738 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 00:14:20,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 00:14:20,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash 303, now seen corresponding path program 1 times [2023-11-12 00:14:20,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:20,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133727677] [2023-11-12 00:14:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:20,763 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 [2023-11-12 00:14:20,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:20,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:20,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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 (2)] Waiting until timeout for monitored process [2023-11-12 00:14:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:20,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:14:20,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:20,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:20,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:20,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133727677] [2023-11-12 00:14:20,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133727677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:20,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:20,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 00:14:20,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83783110] [2023-11-12 00:14:20,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:20,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:14:20,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:14:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:14:20,921 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 25 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-12 00:14:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:20,984 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2023-11-12 00:14:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:14:20,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2023-11-12 00:14:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:20,994 INFO L225 Difference]: With dead ends: 24 [2023-11-12 00:14:20,995 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:14:20,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:14:21,003 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:21,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:21,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:14:21,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-12 00:14:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 23 states have internal predecessors, (35), 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) [2023-11-12 00:14:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2023-11-12 00:14:21,045 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 1 [2023-11-12 00:14:21,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:21,045 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2023-11-12 00:14:21,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-12 00:14:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2023-11-12 00:14:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:14:21,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:21,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:14:21,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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 (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:21,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 00:14:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash 296418, now seen corresponding path program 1 times [2023-11-12 00:14:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:21,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662388449] [2023-11-12 00:14:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:21,266 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 [2023-11-12 00:14:21,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:21,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:21,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:14:21,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:14:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:14:21,442 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-12 00:14:21,443 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:14:21,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-12 00:14:21,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-12 00:14:21,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-12 00:14:21,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-12 00:14:21,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-12 00:14:21,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-12 00:14:21,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-12 00:14:21,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-11-12 00:14:21,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:21,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:21,653 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:14:21,657 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 00:14:21,657 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:14:21,672 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated [2023-11-12 00:14:21,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:14:21 BasicIcfg [2023-11-12 00:14:21,679 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:14:21,680 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:14:21,680 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:14:21,680 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:14:21,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:14" (3/4) ... [2023-11-12 00:14:21,684 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:14:21,686 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:14:21,687 INFO L158 Benchmark]: Toolchain (without parser) took 8729.84ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 41.4MB in the beginning and 40.5MB in the end (delta: 884.4kB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2023-11-12 00:14:21,687 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 67.1MB. Free memory was 42.5MB in the beginning and 42.4MB in the end (delta: 102.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:14:21,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.93ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 41.0MB in the beginning and 57.6MB in the end (delta: -16.6MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-11-12 00:14:21,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.73ms. Allocated memory is still 88.1MB. Free memory was 57.6MB in the beginning and 55.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:14:21,689 INFO L158 Benchmark]: Boogie Preprocessor took 65.65ms. Allocated memory is still 88.1MB. Free memory was 55.5MB in the beginning and 54.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:14:21,689 INFO L158 Benchmark]: RCFGBuilder took 479.11ms. Allocated memory is still 88.1MB. Free memory was 54.2MB in the beginning and 40.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:14:21,689 INFO L158 Benchmark]: TraceAbstraction took 7608.37ms. Allocated memory is still 88.1MB. Free memory was 39.5MB in the beginning and 40.5MB in the end (delta: -988.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:14:21,690 INFO L158 Benchmark]: Witness Printer took 6.14ms. Allocated memory is still 88.1MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:14:21,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 67.1MB. Free memory was 42.5MB in the beginning and 42.4MB in the end (delta: 102.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.93ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 41.0MB in the beginning and 57.6MB in the end (delta: -16.6MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.73ms. Allocated memory is still 88.1MB. Free memory was 57.6MB in the beginning and 55.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.65ms. Allocated memory is still 88.1MB. Free memory was 55.5MB in the beginning and 54.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 479.11ms. Allocated memory is still 88.1MB. Free memory was 54.2MB in the beginning and 40.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7608.37ms. Allocated memory is still 88.1MB. Free memory was 39.5MB in the beginning and 40.5MB in the end (delta: -988.6kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.14ms. Allocated memory is still 88.1MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4s, 75 PlacesBefore, 19 PlacesAfterwards, 74 TransitionsBefore, 15 TransitionsAfterwards, 464 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 83 TotalNumberOfCompositions, 803 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 583, independent: 529, independent conditional: 0, independent unconditional: 529, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 392, independent: 366, independent conditional: 0, independent unconditional: 366, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 392, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 311, independent: 60, independent conditional: 0, independent unconditional: 60, dependent: 251, dependent conditional: 0, dependent unconditional: 251, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 583, independent: 163, independent conditional: 0, independent unconditional: 163, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 392, unknown conditional: 0, unknown unconditional: 392] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={7:0}, mutex1={3:0}] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(!(t == 1)) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_18-first-reads_unknown_2_neg.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [glob1=1, mutex1={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 100 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 00:14:21,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c6fd60-a894-4e6a-b6ab-9d3e4a169a8a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample