./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:08,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:08,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:45:08,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:08,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:08,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:08,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:08,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:08,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:08,748 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:08,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:08,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:08,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:08,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:08,751 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:08,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:08,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:08,753 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:45:08,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:08,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:45:08,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:08,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:08,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:08,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:08,762 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:45:08,762 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:45:08,763 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:45:08,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:08,763 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:08,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:08,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:08,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:08,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:08,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:08,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:08,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:08,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:08,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:08,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:08,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:08,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:08,770 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:08,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:08,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:08,771 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2023-11-26 10:45:09,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:09,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:09,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:09,077 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:09,078 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:09,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-26 10:45:12,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:12,617 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:12,619 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-26 10:45:12,645 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/data/aacd39b5e/61136c19cd8241ecb397157649d7ecf1/FLAGda2b842b0 [2023-11-26 10:45:12,664 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/data/aacd39b5e/61136c19cd8241ecb397157649d7ecf1 [2023-11-26 10:45:12,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:12,672 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:12,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:12,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:12,685 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:12,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:12" (1/1) ... [2023-11-26 10:45:12,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c5d886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:12, skipping insertion in model container [2023-11-26 10:45:12,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:12" (1/1) ... [2023-11-26 10:45:12,751 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:13,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:13,445 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:13,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:13,590 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:13,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13 WrapperNode [2023-11-26 10:45:13,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:13,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:13,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:13,593 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:13,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,687 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 244 [2023-11-26 10:45:13,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:13,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:13,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:13,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:13,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,763 INFO L175 MemorySlicer]: Split 35 memory accesses to 7 slices as follows [2, 2, 5, 5, 5, 2, 14]. 40 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5, 0, 0]. The 10 writes are split as follows [0, 1, 0, 0, 0, 1, 8]. [2023-11-26 10:45:13,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:13,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:13,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:13,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:13,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (1/1) ... [2023-11-26 10:45:13,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:13,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:13,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a98a661-d79d-41a0-b5a2-205796b04ba9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:45:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:45:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:45:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:45:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 10:45:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 10:45:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 10:45:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 10:45:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-26 10:45:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-26 10:45:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:45:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:45:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:45:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:45:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:45:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:45:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:45:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 10:45:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 10:45:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-26 10:45:13,888 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-26 10:45:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:45:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:45:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:45:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:45:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:45:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 10:45:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 10:45:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 10:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 10:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 10:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 10:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:45:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:45:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:45:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:45:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:45:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 10:45:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:13,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:13,895 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:45:14,099 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:14,117 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:14,670 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:14,926 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:14,926 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-26 10:45:14,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:14 BoogieIcfgContainer [2023-11-26 10:45:14,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:14,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:14,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:14,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:14,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:12" (1/3) ... [2023-11-26 10:45:14,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b5d8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:14, skipping insertion in model container [2023-11-26 10:45:14,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:13" (2/3) ... [2023-11-26 10:45:14,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b5d8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:14, skipping insertion in model container [2023-11-26 10:45:14,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:14" (3/3) ... [2023-11-26 10:45:14,937 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-11-26 10:45:14,948 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:45:14,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:14,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-26 10:45:14,961 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:45:15,045 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 10:45:15,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 94 transitions, 208 flow [2023-11-26 10:45:15,220 INFO L124 PetriNetUnfolderBase]: 34/197 cut-off events. [2023-11-26 10:45:15,220 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 10:45:15,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 197 events. 34/197 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 796 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2023-11-26 10:45:15,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 94 transitions, 208 flow [2023-11-26 10:45:15,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 94 transitions, 208 flow [2023-11-26 10:45:15,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:15,290 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@48e662aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:15,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-26 10:45:15,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:45:15,302 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-26 10:45:15,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:15,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:15,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:45:15,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 10:45:15,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash 609904596, now seen corresponding path program 1 times [2023-11-26 10:45:15,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:15,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336410826] [2023-11-26 10:45:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:15,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:15,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336410826] [2023-11-26 10:45:15,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336410826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:15,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:15,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:15,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166129954] [2023-11-26 10:45:15,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:15,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 94 [2023-11-26 10:45:15,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2023-11-26 10:45:15,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:15,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 94 [2023-11-26 10:45:15,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:45:17,244 INFO L124 PetriNetUnfolderBase]: 2729/5473 cut-off events. [2023-11-26 10:45:17,245 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-26 10:45:17,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9899 conditions, 5473 events. 2729/5473 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 35852 event pairs, 1368 based on Foata normal form. 384/5036 useless extension candidates. Maximal degree in co-relation 8658. Up to 4324 conditions per place. [2023-11-26 10:45:17,296 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 61 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-11-26 10:45:17,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 92 transitions, 332 flow [2023-11-26 10:45:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:45:17,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2023-11-26 10:45:17,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2023-11-26 10:45:17,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 190 transitions. [2023-11-26 10:45:17,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 190 transitions. [2023-11-26 10:45:17,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:45:17,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 190 transitions. [2023-11-26 10:45:17,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2023-11-26 10:45:17,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2023-11-26 10:45:17,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2023-11-26 10:45:17,332 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 208 flow. Second operand 4 states and 190 transitions. [2023-11-26 10:45:17,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 92 transitions, 332 flow [2023-11-26 10:45:17,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:45:17,342 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 192 flow [2023-11-26 10:45:17,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2023-11-26 10:45:17,348 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2023-11-26 10:45:17,349 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 192 flow [2023-11-26 10:45:17,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2023-11-26 10:45:17,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:17,349 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:17,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:45:17,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-26 10:45:17,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:17,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1956774693, now seen corresponding path program 1 times [2023-11-26 10:45:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:17,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098061719] [2023-11-26 10:45:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:17,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:45:17,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:45:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:45:17,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:45:17,451 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:45:17,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-26 10:45:17,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-26 10:45:17,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-26 10:45:17,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-26 10:45:17,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-26 10:45:17,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-26 10:45:17,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-26 10:45:17,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-26 10:45:17,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-26 10:45:17,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-26 10:45:17,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-26 10:45:17,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-26 10:45:17,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-26 10:45:17,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2023-11-26 10:45:17,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-26 10:45:17,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-26 10:45:17,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-26 10:45:17,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-26 10:45:17,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:45:17,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 10:45:17,464 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:45:17,464 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 10:45:17,545 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-26 10:45:17,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 157 transitions, 358 flow [2023-11-26 10:45:17,723 INFO L124 PetriNetUnfolderBase]: 135/677 cut-off events. [2023-11-26 10:45:17,723 INFO L125 PetriNetUnfolderBase]: For 72/81 co-relation queries the response was YES. [2023-11-26 10:45:17,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 677 events. 135/677 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4254 event pairs, 1 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 430. Up to 32 conditions per place. [2023-11-26 10:45:17,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 157 transitions, 358 flow [2023-11-26 10:45:17,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 157 transitions, 358 flow [2023-11-26 10:45:17,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:17,754 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@48e662aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:17,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-26 10:45:17,758 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:45:17,758 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-26 10:45:17,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:45:17,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:45:17,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:45:17,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-26 10:45:17,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash 757877609, now seen corresponding path program 1 times [2023-11-26 10:45:17,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175541893] [2023-11-26 10:45:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:17,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:17,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175541893] [2023-11-26 10:45:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175541893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:17,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:17,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778800678] [2023-11-26 10:45:17,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:17,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:17,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:17,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 157 [2023-11-26 10:45:17,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 157 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2023-11-26 10:45:17,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:45:17,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 157 [2023-11-26 10:45:17,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand