./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/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_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/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_85792210-e2ef-4107-b1c3-7a36baab890e/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 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:06:11,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:06:12,057 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:06:12,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:06:12,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:06:12,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:06:12,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:06:12,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:06:12,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:06:12,091 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:06:12,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:06:12,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:06:12,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:06:12,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:06:12,094 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:06:12,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:06:12,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:06:12,096 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:06:12,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:06:12,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:06:12,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:06:12,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:06:12,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:06:12,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:06:12,101 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:06:12,101 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:06:12,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:06:12,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:06:12,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:06:12,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:06:12,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:06:12,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:06:12,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:06:12,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:12,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:06:12,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:06:12,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:06:12,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:06:12,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:06:12,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:06:12,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:06:12,107 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:06:12,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:06:12,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:06:12,108 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_85792210-e2ef-4107-b1c3-7a36baab890e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2023-11-26 12:06:12,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:06:12,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:06:12,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:06:12,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:06:12,441 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:06:12,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-26 12:06:15,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:06:16,047 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:06:16,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-26 12:06:16,058 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/data/bcb230095/a4e00946b8d24b5d9312ee9ba3593d89/FLAG760eef2ce [2023-11-26 12:06:16,075 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/data/bcb230095/a4e00946b8d24b5d9312ee9ba3593d89 [2023-11-26 12:06:16,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:06:16,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:06:16,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:16,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:06:16,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:06:16,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24557914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16, skipping insertion in model container [2023-11-26 12:06:16,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,133 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:06:16,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:16,366 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:06:16,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:16,405 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:16,405 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:16,413 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:06:16,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16 WrapperNode [2023-11-26 12:06:16,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:16,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:16,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:06:16,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:06:16,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,461 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 133 [2023-11-26 12:06:16,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:16,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:06:16,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:06:16,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:06:16,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,480 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,497 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 8, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 12:06:16,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:06:16,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:06:16,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:06:16,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:06:16,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (1/1) ... [2023-11-26 12:06:16,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:16,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:16,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:06:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:06:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:06:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:06:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:06:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:06:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:06:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:06:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:06:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:06:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:06:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:06:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:06:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:06:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:06:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:06:16,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:06:16,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:06:16,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 12:06:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 12:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:06:16,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:06:16,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:06:16,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:06:16,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:06:16,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:06:16,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:06:16,635 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 12:06:16,801 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:06:16,803 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:06:17,202 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:06:17,539 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:06:17,540 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 12:06:17,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:17 BoogieIcfgContainer [2023-11-26 12:06:17,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:06:17,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:06:17,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:06:17,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:06:17,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:06:16" (1/3) ... [2023-11-26 12:06:17,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300ced67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:17, skipping insertion in model container [2023-11-26 12:06:17,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:16" (2/3) ... [2023-11-26 12:06:17,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300ced67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:17, skipping insertion in model container [2023-11-26 12:06:17,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:17" (3/3) ... [2023-11-26 12:06:17,552 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-11-26 12:06:17,561 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:06:17,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:06:17,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 12:06:17,573 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:06:17,654 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 12:06:17,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 119 flow [2023-11-26 12:06:17,742 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2023-11-26 12:06:17,743 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:06:17,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 3/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-26 12:06:17,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 119 flow [2023-11-26 12:06:17,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 42 transitions, 96 flow [2023-11-26 12:06:17,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:06:17,771 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;@53a6c487, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:06:17,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 12:06:17,778 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:06:17,778 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 12:06:17,778 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:06:17,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:17,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:06:17,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:17,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash 528130, now seen corresponding path program 1 times [2023-11-26 12:06:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807742144] [2023-11-26 12:06:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:17,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:18,178 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 12:06:18,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807742144] [2023-11-26 12:06:18,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807742144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:18,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:18,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:18,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278966327] [2023-11-26 12:06:18,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:18,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2023-11-26 12:06:18,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:18,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:18,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2023-11-26 12:06:18,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:18,483 INFO L124 PetriNetUnfolderBase]: 391/678 cut-off events. [2023-11-26 12:06:18,484 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 12:06:18,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 678 events. 391/678 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3506 event pairs, 265 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 1180. Up to 571 conditions per place. [2023-11-26 12:06:18,495 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 22 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-11-26 12:06:18,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 154 flow [2023-11-26 12:06:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:06:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-26 12:06:18,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5918367346938775 [2023-11-26 12:06:18,511 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-26 12:06:18,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-26 12:06:18,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:18,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-26 12:06:18,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 12:06:18,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 12:06:18,523 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 12:06:18,525 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 96 flow. Second operand 4 states and 116 transitions. [2023-11-26 12:06:18,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 154 flow [2023-11-26 12:06:18,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:06:18,539 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 119 flow [2023-11-26 12:06:18,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-11-26 12:06:18,545 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2023-11-26 12:06:18,545 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 119 flow [2023-11-26 12:06:18,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:18,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:18,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 12:06:18,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:06:18,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:18,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1445840405, now seen corresponding path program 1 times [2023-11-26 12:06:18,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:18,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323377851] [2023-11-26 12:06:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:18,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323377851] [2023-11-26 12:06:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323377851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415802053] [2023-11-26 12:06:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:18,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:18,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:18,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:18,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:06:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:18,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:06:18,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:18,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:18,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415802053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:18,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:18,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 12:06:18,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113456317] [2023-11-26 12:06:18,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:18,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:18,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:18,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2023-11-26 12:06:18,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 12:06:18,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:18,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2023-11-26 12:06:18,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:19,184 INFO L124 PetriNetUnfolderBase]: 391/677 cut-off events. [2023-11-26 12:06:19,184 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 12:06:19,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 677 events. 391/677 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3517 event pairs, 265 based on Foata normal form. 1/587 useless extension candidates. Maximal degree in co-relation 1298. Up to 566 conditions per place. [2023-11-26 12:06:19,193 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 18 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-11-26 12:06:19,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 165 flow [2023-11-26 12:06:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:06:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2023-11-26 12:06:19,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2023-11-26 12:06:19,196 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 158 transitions. [2023-11-26 12:06:19,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 158 transitions. [2023-11-26 12:06:19,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:19,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 158 transitions. [2023-11-26 12:06:19,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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 12:06:19,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 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 12:06:19,201 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 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 12:06:19,201 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 119 flow. Second operand 6 states and 158 transitions. [2023-11-26 12:06:19,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 165 flow [2023-11-26 12:06:19,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:06:19,204 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 126 flow [2023-11-26 12:06:19,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-26 12:06:19,205 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2023-11-26 12:06:19,205 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 126 flow [2023-11-26 12:06:19,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 12:06:19,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:19,206 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 12:06:19,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:19,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:19,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:19,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:19,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1871379083, now seen corresponding path program 1 times [2023-11-26 12:06:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:19,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324207530] [2023-11-26 12:06:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:19,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:19,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324207530] [2023-11-26 12:06:19,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324207530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:19,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494792018] [2023-11-26 12:06:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:19,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:19,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:19,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:19,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:06:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:06:19,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:19,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:19,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494792018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:19,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:19,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 12:06:19,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496184861] [2023-11-26 12:06:19,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:19,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:06:19,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:19,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:06:19,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:06:19,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2023-11-26 12:06:19,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 12:06:19,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:19,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2023-11-26 12:06:19,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:20,228 INFO L124 PetriNetUnfolderBase]: 394/689 cut-off events. [2023-11-26 12:06:20,229 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 12:06:20,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 689 events. 394/689 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3655 event pairs, 265 based on Foata normal form. 3/599 useless extension candidates. Maximal degree in co-relation 1299. Up to 573 conditions per place. [2023-11-26 12:06:20,237 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 21 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2023-11-26 12:06:20,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 248 flow [2023-11-26 12:06:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:06:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:06:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2023-11-26 12:06:20,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244897959183673 [2023-11-26 12:06:20,247 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 257 transitions. [2023-11-26 12:06:20,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 257 transitions. [2023-11-26 12:06:20,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:20,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 257 transitions. [2023-11-26 12:06:20,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.7) internal successors, (257), 10 states have internal predecessors, (257), 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 12:06:20,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 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 12:06:20,257 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 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 12:06:20,257 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 126 flow. Second operand 10 states and 257 transitions. [2023-11-26 12:06:20,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 248 flow [2023-11-26 12:06:20,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 202 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-26 12:06:20,262 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 178 flow [2023-11-26 12:06:20,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-11-26 12:06:20,265 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2023-11-26 12:06:20,265 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 178 flow [2023-11-26 12:06:20,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 12:06:20,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:20,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:20,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:20,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:20,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:20,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1682148800, now seen corresponding path program 1 times [2023-11-26 12:06:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:20,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952484777] [2023-11-26 12:06:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:20,565 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 12:06:20,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:20,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952484777] [2023-11-26 12:06:20,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952484777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:20,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:20,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032340857] [2023-11-26 12:06:20,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:20,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2023-11-26 12:06:20,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 12:06:20,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:20,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2023-11-26 12:06:20,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:20,922 INFO L124 PetriNetUnfolderBase]: 805/1384 cut-off events. [2023-11-26 12:06:20,923 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-26 12:06:20,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2740 conditions, 1384 events. 805/1384 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7703 event pairs, 434 based on Foata normal form. 32/1281 useless extension candidates. Maximal degree in co-relation 2706. Up to 885 conditions per place. [2023-11-26 12:06:20,939 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 57 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-11-26 12:06:20,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 356 flow [2023-11-26 12:06:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:06:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-26 12:06:20,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6683673469387755 [2023-11-26 12:06:20,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-26 12:06:20,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-26 12:06:20,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:20,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-26 12:06:20,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 12:06:20,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 12:06:20,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 12:06:20,951 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 178 flow. Second operand 4 states and 131 transitions. [2023-11-26 12:06:20,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 356 flow [2023-11-26 12:06:20,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 345 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-26 12:06:20,958 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 196 flow [2023-11-26 12:06:20,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-11-26 12:06:20,961 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2023-11-26 12:06:20,962 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 196 flow [2023-11-26 12:06:20,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 12:06:20,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:20,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:06:20,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:20,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash 753565732, now seen corresponding path program 1 times [2023-11-26 12:06:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:20,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112003621] [2023-11-26 12:06:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:20,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:21,050 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 12:06:21,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:21,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112003621] [2023-11-26 12:06:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112003621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:21,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:21,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:21,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137437167] [2023-11-26 12:06:21,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:21,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:21,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:21,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2023-11-26 12:06:21,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 12:06:21,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:21,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2023-11-26 12:06:21,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:21,481 INFO L124 PetriNetUnfolderBase]: 984/1662 cut-off events. [2023-11-26 12:06:21,482 INFO L125 PetriNetUnfolderBase]: For 304/563 co-relation queries the response was YES. [2023-11-26 12:06:21,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 1662 events. 984/1662 cut-off events. For 304/563 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9540 event pairs, 547 based on Foata normal form. 170/1716 useless extension candidates. Maximal degree in co-relation 3670. Up to 1076 conditions per place. [2023-11-26 12:06:21,503 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 63 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-11-26 12:06:21,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 412 flow [2023-11-26 12:06:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:21,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:06:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-26 12:06:21,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6683673469387755 [2023-11-26 12:06:21,506 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-26 12:06:21,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-26 12:06:21,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:21,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-26 12:06:21,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 12:06:21,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 12:06:21,509 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 12:06:21,510 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 196 flow. Second operand 4 states and 131 transitions. [2023-11-26 12:06:21,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 412 flow [2023-11-26 12:06:21,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 84 transitions, 405 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:06:21,516 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 222 flow [2023-11-26 12:06:21,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-11-26 12:06:21,518 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2023-11-26 12:06:21,518 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 222 flow [2023-11-26 12:06:21,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 12:06:21,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:21,519 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:21,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:06:21,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:21,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -810057336, now seen corresponding path program 1 times [2023-11-26 12:06:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:21,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232007066] [2023-11-26 12:06:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:06:21,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:21,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232007066] [2023-11-26 12:06:21,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232007066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:21,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:21,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:21,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333411832] [2023-11-26 12:06:21,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:21,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:21,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:21,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:21,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2023-11-26 12:06:21,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 12:06:21,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:21,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2023-11-26 12:06:21,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:21,907 INFO L124 PetriNetUnfolderBase]: 563/981 cut-off events. [2023-11-26 12:06:21,907 INFO L125 PetriNetUnfolderBase]: For 319/540 co-relation queries the response was YES. [2023-11-26 12:06:21,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 981 events. 563/981 cut-off events. For 319/540 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5332 event pairs, 403 based on Foata normal form. 115/977 useless extension candidates. Maximal degree in co-relation 2334. Up to 825 conditions per place. [2023-11-26 12:06:21,918 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 34 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-26 12:06:21,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 291 flow [2023-11-26 12:06:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:06:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2023-11-26 12:06:21,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2023-11-26 12:06:21,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 96 transitions. [2023-11-26 12:06:21,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 96 transitions. [2023-11-26 12:06:21,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:21,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 96 transitions. [2023-11-26 12:06:21,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:21,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 12:06:21,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 12:06:21,923 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 222 flow. Second operand 3 states and 96 transitions. [2023-11-26 12:06:21,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 291 flow [2023-11-26 12:06:21,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:06:21,927 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 220 flow [2023-11-26 12:06:21,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2023-11-26 12:06:21,928 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2023-11-26 12:06:21,929 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 220 flow [2023-11-26 12:06:21,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 12:06:21,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:21,929 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-26 12:06:21,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:06:21,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:21,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1022778494, now seen corresponding path program 2 times [2023-11-26 12:06:21,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:21,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360222047] [2023-11-26 12:06:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:21,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:22,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:22,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360222047] [2023-11-26 12:06:22,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360222047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:22,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087770] [2023-11-26 12:06:22,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:06:22,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:22,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:22,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:06:22,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:06:22,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:06:22,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:06:22,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 12:06:22,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 12:06:22,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087770] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:22,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:22,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-26 12:06:22,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300621191] [2023-11-26 12:06:22,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:22,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:06:22,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:06:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:06:22,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2023-11-26 12:06:22,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 220 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 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 12:06:22,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:22,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2023-11-26 12:06:22,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:22,912 INFO L124 PetriNetUnfolderBase]: 564/984 cut-off events. [2023-11-26 12:06:22,913 INFO L125 PetriNetUnfolderBase]: For 335/556 co-relation queries the response was YES. [2023-11-26 12:06:22,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 984 events. 564/984 cut-off events. For 335/556 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5352 event pairs, 403 based on Foata normal form. 116/980 useless extension candidates. Maximal degree in co-relation 2270. Up to 817 conditions per place. [2023-11-26 12:06:22,925 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 21 selfloop transitions, 18 changer transitions 0/60 dead transitions. [2023-11-26 12:06:22,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 60 transitions, 304 flow [2023-11-26 12:06:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:06:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 12:06:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 345 transitions. [2023-11-26 12:06:22,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029154518950437 [2023-11-26 12:06:22,929 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 345 transitions. [2023-11-26 12:06:22,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 345 transitions. [2023-11-26 12:06:22,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:22,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 345 transitions. [2023-11-26 12:06:22,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 24.642857142857142) internal successors, (345), 14 states have internal predecessors, (345), 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 12:06:22,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 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 12:06:22,934 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 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 12:06:22,934 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 220 flow. Second operand 14 states and 345 transitions. [2023-11-26 12:06:22,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 60 transitions, 304 flow [2023-11-26 12:06:22,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 60 transitions, 288 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-26 12:06:22,939 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 246 flow [2023-11-26 12:06:22,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=246, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2023-11-26 12:06:22,940 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2023-11-26 12:06:22,941 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 246 flow [2023-11-26 12:06:22,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 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 12:06:22,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:22,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:22,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:23,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:06:23,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:23,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash -736224961, now seen corresponding path program 1 times [2023-11-26 12:06:23,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:23,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445620109] [2023-11-26 12:06:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:06:23,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:23,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445620109] [2023-11-26 12:06:23,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445620109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:23,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911832372] [2023-11-26 12:06:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:23,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:23,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:23,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:23,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:06:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:23,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:06:23,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:23,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:23,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911832372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:23,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:23,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-26 12:06:23,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828202133] [2023-11-26 12:06:23,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:23,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 12:06:23,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:23,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 12:06:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-26 12:06:24,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-26 12:06:24,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 246 flow. Second operand has 19 states, 19 states have (on average 19.105263157894736) internal successors, (363), 19 states have internal predecessors, (363), 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 12:06:24,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:24,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-26 12:06:24,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:25,200 INFO L124 PetriNetUnfolderBase]: 1724/2808 cut-off events. [2023-11-26 12:06:25,201 INFO L125 PetriNetUnfolderBase]: For 794/1219 co-relation queries the response was YES. [2023-11-26 12:06:25,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6802 conditions, 2808 events. 1724/2808 cut-off events. For 794/1219 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16863 event pairs, 398 based on Foata normal form. 295/2956 useless extension candidates. Maximal degree in co-relation 4018. Up to 458 conditions per place. [2023-11-26 12:06:25,232 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 120 selfloop transitions, 25 changer transitions 8/168 dead transitions. [2023-11-26 12:06:25,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 168 transitions, 876 flow [2023-11-26 12:06:25,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:06:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 12:06:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 366 transitions. [2023-11-26 12:06:25,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2023-11-26 12:06:25,236 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 366 transitions. [2023-11-26 12:06:25,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 366 transitions. [2023-11-26 12:06:25,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:25,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 366 transitions. [2023-11-26 12:06:25,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 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 12:06:25,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 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 12:06:25,241 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 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 12:06:25,242 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 246 flow. Second operand 14 states and 366 transitions. [2023-11-26 12:06:25,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 168 transitions, 876 flow [2023-11-26 12:06:25,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 168 transitions, 808 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-26 12:06:25,254 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 250 flow [2023-11-26 12:06:25,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=250, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-11-26 12:06:25,259 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2023-11-26 12:06:25,259 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 250 flow [2023-11-26 12:06:25,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.105263157894736) internal successors, (363), 19 states have internal predecessors, (363), 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 12:06:25,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:25,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:25,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:25,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:25,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:25,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1542803289, now seen corresponding path program 1 times [2023-11-26 12:06:25,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:25,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735285300] [2023-11-26 12:06:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:25,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:06:25,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:25,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735285300] [2023-11-26 12:06:25,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735285300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:25,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273826437] [2023-11-26 12:06:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:25,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:25,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:25,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:25,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:06:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:25,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:06:25,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:25,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:26,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273826437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:26,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:26,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-26 12:06:26,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558421612] [2023-11-26 12:06:26,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:26,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 12:06:26,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 12:06:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-26 12:06:26,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-26 12:06:26,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 250 flow. Second operand has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 19 states have internal predecessors, (367), 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 12:06:26,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:26,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-26 12:06:26,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:27,444 INFO L124 PetriNetUnfolderBase]: 1804/3017 cut-off events. [2023-11-26 12:06:27,444 INFO L125 PetriNetUnfolderBase]: For 1910/1982 co-relation queries the response was YES. [2023-11-26 12:06:27,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 3017 events. 1804/3017 cut-off events. For 1910/1982 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18816 event pairs, 421 based on Foata normal form. 84/2972 useless extension candidates. Maximal degree in co-relation 4327. Up to 488 conditions per place. [2023-11-26 12:06:27,473 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 82 selfloop transitions, 19 changer transitions 54/169 dead transitions. [2023-11-26 12:06:27,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 169 transitions, 925 flow [2023-11-26 12:06:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:06:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 12:06:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 366 transitions. [2023-11-26 12:06:27,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2023-11-26 12:06:27,476 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 366 transitions. [2023-11-26 12:06:27,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 366 transitions. [2023-11-26 12:06:27,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:27,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 366 transitions. [2023-11-26 12:06:27,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 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 12:06:27,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 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 12:06:27,482 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 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 12:06:27,482 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 250 flow. Second operand 14 states and 366 transitions. [2023-11-26 12:06:27,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 169 transitions, 925 flow [2023-11-26 12:06:27,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 169 transitions, 848 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-11-26 12:06:27,495 INFO L231 Difference]: Finished difference. Result has 81 places, 57 transitions, 222 flow [2023-11-26 12:06:27,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=222, PETRI_PLACES=81, PETRI_TRANSITIONS=57} [2023-11-26 12:06:27,497 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2023-11-26 12:06:27,497 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 57 transitions, 222 flow [2023-11-26 12:06:27,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 19 states have internal predecessors, (367), 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 12:06:27,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:27,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:27,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:27,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:27,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:27,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1794831612, now seen corresponding path program 1 times [2023-11-26 12:06:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750304033] [2023-11-26 12:06:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:27,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:06:27,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750304033] [2023-11-26 12:06:27,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750304033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365263833] [2023-11-26 12:06:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:27,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:27,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:27,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:27,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:06:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:27,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:06:27,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:06:28,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:06:28,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365263833] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:28,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:28,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 12:06:28,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084300165] [2023-11-26 12:06:28,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:06:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:06:28,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:06:28,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2023-11-26 12:06:28,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 57 transitions, 222 flow. Second operand has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 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 12:06:28,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:28,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2023-11-26 12:06:28,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:28,898 INFO L124 PetriNetUnfolderBase]: 1941/3427 cut-off events. [2023-11-26 12:06:28,899 INFO L125 PetriNetUnfolderBase]: For 2429/2527 co-relation queries the response was YES. [2023-11-26 12:06:28,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8899 conditions, 3427 events. 1941/3427 cut-off events. For 2429/2527 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 21315 event pairs, 673 based on Foata normal form. 132/3409 useless extension candidates. Maximal degree in co-relation 5669. Up to 1331 conditions per place. [2023-11-26 12:06:28,945 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 138 selfloop transitions, 13 changer transitions 0/166 dead transitions. [2023-11-26 12:06:28,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 166 transitions, 926 flow [2023-11-26 12:06:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:06:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:06:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2023-11-26 12:06:28,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6591836734693878 [2023-11-26 12:06:28,948 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 323 transitions. [2023-11-26 12:06:28,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 323 transitions. [2023-11-26 12:06:28,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:28,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 323 transitions. [2023-11-26 12:06:28,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 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 12:06:28,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 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 12:06:28,953 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 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 12:06:28,953 INFO L175 Difference]: Start difference. First operand has 81 places, 57 transitions, 222 flow. Second operand 10 states and 323 transitions. [2023-11-26 12:06:28,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 166 transitions, 926 flow [2023-11-26 12:06:28,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 166 transitions, 821 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-11-26 12:06:28,964 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 251 flow [2023-11-26 12:06:28,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=251, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-11-26 12:06:28,965 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 27 predicate places. [2023-11-26 12:06:28,966 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 251 flow [2023-11-26 12:06:28,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 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 12:06:28,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:28,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:28,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:29,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:29,173 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:29,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash 448338144, now seen corresponding path program 1 times [2023-11-26 12:06:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140492592] [2023-11-26 12:06:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:29,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:06:29,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:29,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140492592] [2023-11-26 12:06:29,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140492592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:29,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419546122] [2023-11-26 12:06:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:29,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:29,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:29,304 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:29,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:06:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:29,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:06:29,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:06:29,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:06:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419546122] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:29,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 12:06:29,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565103465] [2023-11-26 12:06:29,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:29,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:06:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:29,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:06:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:06:29,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2023-11-26 12:06:29,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 12 states have internal predecessors, (266), 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 12:06:29,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:29,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2023-11-26 12:06:29,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:30,845 INFO L124 PetriNetUnfolderBase]: 4015/6753 cut-off events. [2023-11-26 12:06:30,845 INFO L125 PetriNetUnfolderBase]: For 6880/7117 co-relation queries the response was YES. [2023-11-26 12:06:30,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17580 conditions, 6753 events. 4015/6753 cut-off events. For 6880/7117 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 43798 event pairs, 1235 based on Foata normal form. 258/6838 useless extension candidates. Maximal degree in co-relation 14128. Up to 2511 conditions per place. [2023-11-26 12:06:30,920 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 192 selfloop transitions, 13 changer transitions 0/223 dead transitions. [2023-11-26 12:06:30,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 223 transitions, 1404 flow [2023-11-26 12:06:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:06:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:06:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2023-11-26 12:06:30,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6591836734693878 [2023-11-26 12:06:30,923 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 323 transitions. [2023-11-26 12:06:30,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 323 transitions. [2023-11-26 12:06:30,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:30,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 323 transitions. [2023-11-26 12:06:30,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 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 12:06:30,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 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 12:06:30,928 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 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 12:06:30,928 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 251 flow. Second operand 10 states and 323 transitions. [2023-11-26 12:06:30,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 223 transitions, 1404 flow [2023-11-26 12:06:30,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 223 transitions, 1329 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-11-26 12:06:30,942 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 323 flow [2023-11-26 12:06:30,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=323, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2023-11-26 12:06:30,943 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 37 predicate places. [2023-11-26 12:06:30,943 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 323 flow [2023-11-26 12:06:30,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 12 states have internal predecessors, (266), 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 12:06:30,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:30,944 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:30,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:31,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:31,151 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:31,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash 463340292, now seen corresponding path program 2 times [2023-11-26 12:06:31,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:31,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252556984] [2023-11-26 12:06:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:31,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 12:06:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:31,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252556984] [2023-11-26 12:06:31,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252556984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:31,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944596413] [2023-11-26 12:06:31,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:06:31,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:31,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:31,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:31,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:06:31,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:06:31,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:06:31,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:06:31,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 12:06:31,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 12:06:31,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944596413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:31,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:31,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-26 12:06:31,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987137350] [2023-11-26 12:06:31,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:31,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 12:06:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:31,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 12:06:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:06:31,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-26 12:06:31,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 323 flow. Second operand has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 states have internal predecessors, (253), 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 12:06:31,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:31,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-26 12:06:31,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:34,666 INFO L124 PetriNetUnfolderBase]: 9107/14191 cut-off events. [2023-11-26 12:06:34,666 INFO L125 PetriNetUnfolderBase]: For 19447/20215 co-relation queries the response was YES. [2023-11-26 12:06:34,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40708 conditions, 14191 events. 9107/14191 cut-off events. For 19447/20215 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 96170 event pairs, 1584 based on Foata normal form. 160/14055 useless extension candidates. Maximal degree in co-relation 32300. Up to 2816 conditions per place. [2023-11-26 12:06:34,789 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 144 selfloop transitions, 38 changer transitions 45/244 dead transitions. [2023-11-26 12:06:34,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 244 transitions, 1589 flow [2023-11-26 12:06:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 12:06:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 12:06:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 404 transitions. [2023-11-26 12:06:34,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2023-11-26 12:06:34,792 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 404 transitions. [2023-11-26 12:06:34,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 404 transitions. [2023-11-26 12:06:34,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:34,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 404 transitions. [2023-11-26 12:06:34,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 25.25) internal successors, (404), 16 states have internal predecessors, (404), 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 12:06:34,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 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 12:06:34,797 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 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 12:06:34,797 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 323 flow. Second operand 16 states and 404 transitions. [2023-11-26 12:06:34,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 244 transitions, 1589 flow [2023-11-26 12:06:34,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 244 transitions, 1494 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-26 12:06:34,876 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 461 flow [2023-11-26 12:06:34,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=461, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2023-11-26 12:06:34,877 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 47 predicate places. [2023-11-26 12:06:34,877 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 461 flow [2023-11-26 12:06:34,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 states have internal predecessors, (253), 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 12:06:34,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:34,878 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:34,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:35,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:35,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:06:35,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash 912670764, now seen corresponding path program 2 times [2023-11-26 12:06:35,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:35,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140359873] [2023-11-26 12:06:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:35,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 12:06:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:35,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140359873] [2023-11-26 12:06:35,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140359873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:35,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868047611] [2023-11-26 12:06:35,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:06:35,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:35,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:35,434 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:35,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:06:35,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:06:35,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:06:35,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:06:35,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 12:06:35,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 12:06:35,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868047611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:35,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:35,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-26 12:06:35,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679897269] [2023-11-26 12:06:35,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:35,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 12:06:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 12:06:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:06:35,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-26 12:06:35,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 461 flow. Second operand has 13 states, 13 states have (on average 19.76923076923077) internal successors, (257), 13 states have internal predecessors, (257), 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 12:06:35,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:35,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-26 12:06:35,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:38,321 INFO L124 PetriNetUnfolderBase]: 8253/13173 cut-off events. [2023-11-26 12:06:38,321 INFO L125 PetriNetUnfolderBase]: For 27688/28478 co-relation queries the response was YES. [2023-11-26 12:06:38,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38355 conditions, 13173 events. 8253/13173 cut-off events. For 27688/28478 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 91254 event pairs, 1012 based on Foata normal form. 568/13609 useless extension candidates. Maximal degree in co-relation 28556. Up to 2992 conditions per place. [2023-11-26 12:06:38,375 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 0 selfloop transitions, 0 changer transitions 241/241 dead transitions. [2023-11-26 12:06:38,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 241 transitions, 1696 flow [2023-11-26 12:06:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 12:06:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 12:06:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 399 transitions. [2023-11-26 12:06:38,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-11-26 12:06:38,502 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 399 transitions. [2023-11-26 12:06:38,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 399 transitions. [2023-11-26 12:06:38,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:38,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 399 transitions. [2023-11-26 12:06:38,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 24.9375) internal successors, (399), 16 states have internal predecessors, (399), 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 12:06:38,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 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 12:06:38,507 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 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 12:06:38,507 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 461 flow. Second operand 16 states and 399 transitions. [2023-11-26 12:06:38,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 241 transitions, 1696 flow [2023-11-26 12:06:38,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 241 transitions, 1664 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-26 12:06:38,581 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2023-11-26 12:06:38,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2023-11-26 12:06:38,582 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 49 predicate places. [2023-11-26 12:06:38,583 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2023-11-26 12:06:38,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.76923076923077) internal successors, (257), 13 states have internal predecessors, (257), 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 12:06:38,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-11-26 12:06:38,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-26 12:06:38,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-26 12:06:38,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-26 12:06:38,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-26 12:06:38,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-26 12:06:38,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-11-26 12:06:38,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-11-26 12:06:38,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-11-26 12:06:38,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-26 12:06:38,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-26 12:06:38,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-26 12:06:38,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-26 12:06:38,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:38,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:06:38,796 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:38,802 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:06:38,802 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:06:38,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:06:38 BasicIcfg [2023-11-26 12:06:38,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:06:38,813 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:06:38,814 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:06:38,814 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:06:38,814 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:17" (3/4) ... [2023-11-26 12:06:38,817 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:06:38,820 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 12:06:38,820 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 12:06:38,820 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-26 12:06:38,839 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 124 nodes and edges [2023-11-26 12:06:38,840 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-26 12:06:38,841 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-26 12:06:38,842 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:06:38,989 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:06:38,990 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:06:38,990 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:06:38,991 INFO L158 Benchmark]: Toolchain (without parser) took 22903.29ms. Allocated memory was 142.6MB in the beginning and 857.7MB in the end (delta: 715.1MB). Free memory was 110.8MB in the beginning and 609.5MB in the end (delta: -498.7MB). Peak memory consumption was 217.4MB. Max. memory is 16.1GB. [2023-11-26 12:06:38,992 INFO L158 Benchmark]: CDTParser took 1.06ms. Allocated memory is still 117.4MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:06:38,992 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.78ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 98.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 12:06:38,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.70ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 96.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:38,993 INFO L158 Benchmark]: Boogie Preprocessor took 57.34ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 94.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:38,993 INFO L158 Benchmark]: RCFGBuilder took 1020.83ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 94.1MB in the beginning and 140.4MB in the end (delta: -46.3MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-11-26 12:06:38,994 INFO L158 Benchmark]: TraceAbstraction took 21269.30ms. Allocated memory was 184.5MB in the beginning and 857.7MB in the end (delta: 673.2MB). Free memory was 139.3MB in the beginning and 616.9MB in the end (delta: -477.6MB). Peak memory consumption was 438.9MB. Max. memory is 16.1GB. [2023-11-26 12:06:38,994 INFO L158 Benchmark]: Witness Printer took 176.94ms. Allocated memory is still 857.7MB. Free memory was 616.9MB in the beginning and 609.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 12:06:38,997 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06ms. Allocated memory is still 117.4MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.78ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 98.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.70ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 96.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.34ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 94.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1020.83ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 94.1MB in the beginning and 140.4MB in the end (delta: -46.3MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. * TraceAbstraction took 21269.30ms. Allocated memory was 184.5MB in the beginning and 857.7MB in the end (delta: 673.2MB). Free memory was 139.3MB in the beginning and 616.9MB in the end (delta: -477.6MB). Peak memory consumption was 438.9MB. Max. memory is 16.1GB. * Witness Printer took 176.94ms. Allocated memory is still 857.7MB. Free memory was 616.9MB in the beginning and 609.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 78 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.1s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1319 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1247 mSDsluCounter, 917 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 884 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4381 IncrementalHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 33 mSDtfsCounter, 4381 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 493 GetRequests, 313 SyntacticMatches, 7 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=461occurred in iteration=12, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 433 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 592 ConstructedInterpolants, 0 QuantifiedInterpolants, 1707 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1186 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 322/527 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 12:06:39,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85792210-e2ef-4107-b1c3-7a36baab890e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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: TRUE